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In patients with anorectal malformations (ARM), the sacral ratio (SR) serves as an established predictive marker for functional prognosis and is derived from conventional radiographs. More recently, magnetic resonance imaging (MRI) has emerged as a diagnostic alternative for preoperative/baseline assessment of patients with ARM. With this study we aimed to evaluate if the SR could be reliable be measured from MRI images and if it correlated to SR measurements obtained from radiographs.Two raters analyzed MRI data and conventional radiographs from thirty-one subjects (n = 17 with ARM; n = 14 controls). We calculated intra-class correlation coefficients (ICCs) to test inter-rater reliability and applied paired t-tests to examine if SR parameters from MRI were comparable with those from pelvic radiograph. We further computed Pearson's correlation coefficients to test the linear relationship between SR calculated from MRI and conventional radiographs.The ARM and control groups did not statistically differ in their age and weight on the day of the MRI scan. Reliability analysis revealed an excellent inter-rater agreement for SR from radiograph parameters with an intraclass correlation coefficient (ICC) of 0.94, respectively of 0.86 for MRI (frontal plane), and of 0.84 for MRI (sagittal plane). The correlation coefficient between SR calculated from the sagittal MRI and SR calculated from radiograph images was significant and high (r = 0.80, P 0.001). The SRs from MRI images did not significantly differ from SRs from radiographs, but were also not statistically equivalent.Our results demonstrate that the SR can be derived from MRI images with good inter-rater reliability. The SR value is marginal higher when calculated on MRI, presumably due to inclusion of cartilaginous yet unossified structures.

A pre-performance routine (PPR) refers to a set of task-relevant thoughts and actions an athlete systematically engages in prior to performance execution. The aim of this meta-analysis was to deter...

Background The aim of this study was to investigate the effect of feedback devices on visual attention and the quality of pediatric resuscitation. Methods This was a randomized cross-over simulation study at the Medical University of Vienna. Participants were students and neonatal providers performing four resuscitation scenarios with the support of feedback devices randomized. The primary outcome was the quality of resuscitation. Secondary outcomes were total dwell time (=total duration of visit time) on areas of interest and the workload of participants. Results Forty participants were analyzed. Overall, chest compression (P P = 0.002) when using a feedback device. Dwell time on the feedback device was 40.1% in the ventilation feedback condition and 48.7% in the chest compression feedback condition. In both conditions, participants significantly reduced attention from the infant’s chest and mask (72.9 vs. 32.6% and 21.9 vs. 12.7%). Participants’ subjective workload increased by 3.5% (P = 0.018) and 8% (P Conclusions The quality of pediatric resuscitation significantly improved when using real-time feedback. However, attention shifted from the manikin and other equipment to the feedback device and subjective workload increased, respectively. Impact Cardiopulmonary resuscitation with feedback devices results in a higher quality of resuscitation and has the potential to lead to a better outcome for patients. Feedback devices consume attention from resuscitation providers. Feedback devices were associated with a shift of visual attention to the feedback devices and an increased workload of participants. Increased workload for providers and benefits for resuscitation quality need to be balanced for the best effect.

Introduction For the classification of the complexity of cloacal malformations and the decision on the operative approach, an exact anatomical assessment is mandatory. To benefit from using three-dimensional (3D)-printed models in preoperative planning and training, the practicability of these models should be guaranteed. The aim of this study was to evaluate the quality and feasibility of a real-size 3D-printed cloaca model for the purpose of cysto-vaginoscopic evaluation. Materials and Methods We performed a 3D reconstruction and printed a real-size, rubber-like 3D model of an infant pelvis with a cloacal malformation and asked invited pediatric surgeons and pediatric urologists to perform a cysto-vaginoscopy on the model and to complete a brief questionnaire to rate the quality and feasibility of the model and to indicate whether they would recommend the model for preoperative planning and training. Results Overall, 41 participants rated the model quality as good to very good (M = 3.28, standard deviation [SD] = 0.50, on a scale from 1 to 4). The model was rated as feasible for preoperative training (M = 4.10, SD = 0.75, on a scale from 1 to 5) and most participants (85.4%) would recommend the model for preoperative training. The cysto-vaginoscopy of the model was considered as a valid training tool for real-life cases and improved the confidence on the anatomy of a cloaca. Conclusion The results of our study indicate that patient-specific 3D-printed models might be a useful tool in the preoperative evaluation of complex anorectal malformations by simulation of cysto-vaginoscopy with an excellent view on anatomical structures to assess the whole spectrum of the individual cloacal malformation. Our model might be a valuable add-on tool for specialty training in pediatric colorectal surgery.

Introduction: Training in laparoscopic surgery seems to be an important aspect in gaining and maintaining professional competency. In experimental settings, camera navigation skills improved after simulation-based training, but the effect of camera work on the surgeon's performance is not well studied. The aim of this study was to investigate whether a fixed camera or an operated camera, as well as the experience of the camera operator has an effect on the performance of the surgeon. Materials and Methods: The study was performed on the LapSim laparoscopic training system. The task was to tie an intracorporal knot in a static surgical environment with three different camera conditions: fixed camera, camera operated by an inexperienced person (inexpert camera), and camera operated by an experienced surgeon (expert camera). The camera conditions were counterbalanced across trials. Performance variables were completion time in seconds and the extend of movements in path length and angular pathway. Gaze behavior was measured with eye-tracking glasses worn by the surgeon as well as the camera operator and was evaluated for performance-harming effects. Results: Completion time varied across conditions, with participants performing significantly longer in the fixed camera condition than in the expert or the inexpert condition. The expert and inexpert conditions did not differ. The performance-harming effect of non-focusing on the tissue was especially visible in the fixed camera condition but disappeared in the expert camera condition. Neither the camera operators' gaze behavior nor the surgeon-camera operator fixation agreement predicted task performance. Discussion: A camera operator can potentially eliminate performance-harming effects of maladaptive gaze behavior and promote optimal visual behavior of a surgeon. In our experimental task, there was no significant difference in whether the camera operator had previous training in laparoscopic surgery or not.

Aim Our aim was to examine the relationship between rescuers' anthropometric data and chest compression quality during paediatric resuscitation training. Methods This study focused on 224 medical students (53% women) who performed 2 minutes of paediatric resuscitation at the Medical University of Vienna, Austria: 116 on a baby manikin and 108 on an adolescent manikin. Skill Reporter software measured chest compression quality by recording compression depth, frequency, hand position and complete recoil. The participants' height, weight and body mass index (BMI) were recorded. Results Participants with a lower BMI achieved higher total chest compression scores on both the baby and adolescent manikins than participants with a higher BMI. The latter were more likely to exceed the correct compression depth and not achieve complete chest recoil in the adolescent manikin. When it came to the baby manikin, the female participants achieved better chest recoil and the males achieved a higher number of compressions at the correct rate. Males also achieved better chest recoil with the adolescent manikins. Being tall only correlated with incomplete recoil in the adolescent manikin. Conclusion The results indicate that anthropometric variables were associated with chest compression quality in paediatric patients and should be considered by future education programmes.

Evidence shows that using a preshot routine (PSR) improves performance in self-paced, closed-skill tasks. A PSR is a set of cognitive and behavioral elements an athlete systematically engages in prior to performance execution. The present study describes the implementation and evaluation of a PSR intervention with elite pistol shooters in the 10-m air-pistol discipline. Individualized PSRs were developed with the shooters in individual psychological sessions, and the PSRs were then practiced in subsequent training sessions. Intervention effectiveness was evaluated by analyzing the shooters’ competition performance. Overall, the shooters improved on average by 2.5 points from before to after the intervention. This improvement was unlikely due to seasonal effect, as the league average (scores of league shooters not included in the intervention sample) remained stable during the study time. These results indicate that using a PSR before a shooting series has benefits for subsequent shooting performance.

This chapter reviews current choking under pressure (“choking”) literature while offering questions to advance theory, methodology, and interventions. Although definitions of choking are elusive, psychological predictors helpful, and theoretical explanations existent, there is limited understanding of the (neuro)physiological underpinnings of choking. By using mobile recording devices, the assessment of (neuro)physiological and neuromuscular activity under pressure could shed light on choking mechanisms. Choking interventions are aimed at either promoting task-relevant attention or familiarizing performers with pressure, which improve performance under pressure but vary in their effectiveness. Thus, choking interventions could be tailored to specific sports and/or personalities. Choking can also influence an entire team, referred to as collective sport team collapse. Social factors appear to play a key role, indicating that team collapse is more than the simultaneous choking of individuals. We offer questions to advance this burgeoning field but caution that further research is needed before considering team interventions.

Objectives Two experimental studies were conducted to test and compare whether different pre-performance routines (i.e., left-hand dynamic handgrip and an extensive routine) can improve (and potentially have a combined effect on) accuracy in closed, self-paced motor tasks. Design/method Study 1 used a standardised laboratory task to measure motor performance, while Study 2 was a field experiment measuring tenpin bowling accuracy and in-game performance as outcome variables. Both studies consisted of a pretest phase followed by one or two test phases using a group-specific pre-performance routine (PPR), or control, condition. Results Results of both studies indicated that the inexperienced students (Study 1) and experienced athletes (Study 2) within the intervention groups were more accurate when using the intervention than a control group (not provided an intervention). Using a combined (i.e., left-hand dynamic handgrip and extensive) PPR may not have additive performance effects. Furthermore, using a PPR intervention did not equate to better in-game performance in Study 2. Conclusions These studies indicate that the element of left-hand dynamic handgrip as a PPR may be comparable to control groups, but further research is needed to determine if it is comparable to extensive PPR interventions that promote concentration on the task for increased performance generally (and under pressure).

Summary Based on the trans-contextual model, two studies aimed to test whether autonomy-supportive physical education (PE) promotes autonomous motivation towards leisure-time physical activity among Chinese college students. Study 1 was conducted in September 2015 and used a cross-sectional design. Participants were students who provided data on perceived autonomy support and motivation for physical activity. Regression analysis was used to analyze the data. Study 2 took place from September to December 2015 and employed an experimental design. Participants were PE teachers and their students. The teachers were randomized to either an intervention or a control group and those in the intervention group received a 3-month long autonomy-supportive intervention program. Their students provided data on motivation. The data were analyzed with repeated measurement analysis of variance. A total of 681 students aged 16–26 years participated in Study 1. Perceived autonomy support predicted autonomous motivation in PE (β = 0.18, P = 0.001), which in turn predicted autonomous motivation towards leisure-time physical activity (β = 0.51, P = 0.001). Ten PE teachers (28–53 years) and 258 students (16–26 years) participated in Study 2. Students who were educated by the intervention teachers had significantly stronger autonomous motivation towards leisure-time physical activity than students educated by the control teachers after the intervention, (F = 12.41, P = 0.001). The results suggest that PE may serve as an effective platform to promote an active lifestyle among Chinese college students when teachers provide students with an experience of autonomy.

We present two openly accessible databases related to the assessment of implicit motives using Picture Story Exercises (PSEs): (a) A database of 183,415 German sentences, nested in 26,389 stories provided by 4,570 participants, which have been coded by experts using Winter’s coding system for the implicit affiliation/intimacy, achievement, and power motives, and (b) a database of 54 classic and new pictures which have been used as PSE stimuli. Updated picture norms are provided which can be used to select appropriate pictures for PSE applications. Based on an analysis of the relations between raw motive scores, word count, and sentence count, we give recommendations on how to control motive scores for story length, and validate the recommendation with a meta-analysis on gender differences in the implicit affiliation motive that replicates existing findings. We discuss to what extent the guiding principles of the story length correction can be generalized to other content coding systems for narrative material. Several potential applications of the databases are discussed, including (un)supervised machine learning of text content, psychometrics, and better reproducibility of PSE research.

This study tested the effect of 8-week endurance and resistance training programmes on cardiovascular stress responses, life stress, and coping. Fifty-two untrained but healthy female students were randomised to an 8-week endurance training, an 8-week resistance training, or a wait list control group. Before and after the training intervention, we assessed the groups' cardiorespiratory fitness (VO2max test), self-reported life stress, coping strategies and cardiovascular reactivity to and recovery from a standardised laboratory stressor. Both endurance and resistance training programmes caused physiological adaptation in terms of increased VO2max after the intervention. For stress and coping parameters, participants in the training groups improved cardiovascular recovery from stress and reported having less stress in their everyday life after the intervention than participants in the control group, while the two training groups did not differ from each other. We did not find any significant differences in heart rate reactivity and coping strategies between the study groups. These results partly support that exercise training has stress-reducing benefits regardless of the type of exercise. Both endurance and resistance exercise activities may be effectively used to improve stress regulation competence while having less impact on changing specific coping strategies.

Studies in sport psychology show that using a pre-performance routine (PPR), a set of cognitive and behavioral elements, prior to performing, optimizes sport performance under pressure. We attempt to extend this effect to music performance, employing individually developed PPRs based on the centering technique. The hypothesis is that musicians with a PPR perform better and experience higher self-efficacy under pressure than participants with a control, goal-setting intervention. Thirty violin performance students performed an audition excerpt in a low-pressure pretest and a high-pressure posttest. Pressure was induced by the presence of an audience and a jury. Half of the students practiced their individualized PPRs during a 5-week period between performances, whereas the other half applied a goal-setting intervention to their practice. Participants’ music performance was measured by five expert jurors and self-evaluations. The results showed that both intervention techniques were perceived as equally helpful by the participants, but this did not translate into jurors’ performance evaluations. There were no significant differences between the PPR and goal-setting groups in music performance, but the PPR group had higher self-efficacy in the posttest than the goal-setting group. Future studies should include a third group without any intervention.

Introduction: Short-term international medical service trips (MST) are established means to access specialized medical aid in resource-limited areas. The field of pediatric colorectal surgery is a subspecialty in pediatric surgery that mainly treats anorectal malformations (ARM) and Hirschsprung disease (HD). This study aimed to investigate the impact of MST on the donors’ perception of competency concomitantly to the impact on patients in the donors’ home country. We also wanted to investigate whether the donors’ pre-existing experience in the field of ARM and HD affects the experience they gain during the MST, and the subjective perception in treating patients in their base country. Methods: We created a questionnaire for the international medical staff participating in MSTs on the unique topic of pediatric colorectal diseases. The questionnaire was split into three parts: essential experience (1) in the field of colorectal surgery of the participant, the experience and impact on patient care in the home country during and after the MST in ARM (2), and in HD (3). Results: We collected data from 20 participants (6 female, 14 male). The majority of them had prior experience with the MST program (75%) and came from institutions specialized in the treatment of pediatric colorectal disorders (80%). Participants felt that MST improved patient care in both the host country (p < 0.001) and their home country (p < 0.001). Experienced and less experienced participants did not differ in the overall MST evaluation (ps > 0.08). They reported that their competencies to treat ARM and HD improved significantly in response to the MST (ps < 0.001). Improvements in ARM and HD treatment were associated with the number of supervised HD surgeries during MST, while the other forms of participation were unrelated to the improvements. Conclusion: The results of our questionnaire indicate that participation in MST in the specialized field of pediatric colorectal surgery helps to improve confidence in the care and treatment of affected patients in both the host and donor countries, independent of previous surgical experience.

Dynamic visuospatial tasks, requiring continuous engagement of attention over long time periods, have been little studied with the electroencephalogram. Specifically, the role of the theta band in these tasks is unclear, with task-related theta enhancements improving performance in some studies, and hindering it in others. In this study, 30 participants performed the Pong videogame as a dynamic visuospatial task to analyze the influence of theta and alpha amplitude as well as alpha asymmetry on performance. The theta band increased significantly at central-parietal regions and correlated negatively with performance, especially at anterior regions. The alpha band showed a significant decrease, greater at right over left parietal regions, but neither the amplitude nor the asymmetry ratio correlated with performance. With theta being an indicator of top-down cognitive control, it may be concluded that proficient performance in dynamic visuospatial tasks depends on a bottom-up guidance of attention with little top-down intervention.

Researchers suggests that a pre-performance routine (PPR) can improve performance in competitions. The effectiveness of left-hand contractions, a PPR to trigger facilitative cortical processes for skilled motor performance, was tested in two studies. In Study 1, gymnasts competing at the German university championships in artistic gymnastics performed their routines with or without the PPR. In Study 2, gymnasts performed the balance beam exercise either using the PPR or the control task (right-hand contractions) under simulated competition pressure. The qualification performance (Study 1) and the pressure-free performance (Study 2) were controlled. In both studies, participants in the PPR group performed better than control participants. The results indicate that left-hand contractions may be a useful PPR in the field.

Introduction Prior evidence has supported the use of high-fidelity simulation in initial emergency medical services (EMS) education, but there is a dearth of research on whether EMS professionals can also benefit from it. We sought to examine simulation use and years of practice as predictors of insimulation team performance among EMS professionals. The hypothesis is that both the prior participation in simulation events and the accumulated years of practice will predict insimulation performance. Methods This cross-sectional study was conducted as part of a simulation-based EMS competition. Paramedic and physician teams were tested. Participants' years of EMS and healthcare practice and their prior participation in simulation events were assessed with a survey and correlated with performance in the competition. Results Participants were 120 EMS professionals from 51 teams, which was 75% of all competitors. They had in average 8.03 years of healthcare practice and 5.71 years of EMS practice and had previously participated in 4.34 simulation events. The prior participation in simulation events correlated significantly with EMS insimulation performance at the team level (r = 0.40-0.59). In contrast, neither the years of healthcare practice nor the years of EMS practice significantly predicted insimulation team performance. Furthermore, there was no interaction of simulation use and years of practice. Conclusions The benefits of simulation use are not limited to initial EMS education but spread also to experienced professionals. Even individuals who have been working in the field for many years may benefit from high-fidelity simulation. Future research should examine whether this also translates into better clinical performance.

When athletes fail to perform at an expected level during an important moment, it is implied the athletes have experienced "choking" (sudden decline in performance) under pressure.". Researchers have reported that persistent left-hemispheric activation patterns occur when an athlete experiences considerable performance deteriorations under pressure. Researchers have also observed differences in brain activation patterns between left- and right-handed people on a variety of physical and cognitive tests, with the left-hemispheric activation more pronounced in right-handed participants.The purpose of this study was to investigate whether athletes' handedness may be linked to choking susceptibility (i.e., likelihood to experience performance decline under pressure).Twenty right-handed and 13 left-handed experienced Australian football players completed 15 shot attempts, in both a low-pressure and a high-pressure condition. Both groups displayed equal state anxiety increases due to the pressure manipulation, indicating similar increases in anxiety in both handedness groups.Differences were indicated in performance between the left- and right-handed groups during the high-pressure condition, with the left-handed group maintaining, and the right-handed participants declining, performance.Future electroencephalogram (EEG) research investigating this link may clarify the effect between handedness and choking.

Zusammenfassung. Laut Rheinberg (1996) begeben sich Menschen in riskante Sportaktivitäten weil sie (1) durch die Meisterung schwieriger Situationen eigene Kompetenz erleben, (2) die Bedrohung als erregend empfinden und (3) ihr Körper dabei häufig in ungewöhnliche, doch genussfähige Zustände versetzt wird. Diese Anreiztrias wurde mittels strukturierten Interviews auf ihre Relevanz in der Risikosportart Freeride-Skifahren überprüft. Zehn professionelle Freeride-Skifahrer wurden befragt. Kompetenzerleben und erregende Bedrohungswahrnehmung stellten die stärksten motivationalen Anreize für die Fahrer dar. Ungewöhnliche Bewegungszustände wie das Erleben von Schnelligkeit und Rotationen wurden ebenfalls häufig genannt, doch weniger als Kompetenzerleben. Zusätzlich wurden Naturerleben und Freiheit als bedeutende Anreize identifiziert. Die motivationale Kraft dieser Anreize wird aber unter bestimmten Umständen geschwächt. Zum einen wenn die Verletzungsgefahr als zu hoch eingestuft wird und zum anderen wenn extrinsische Anreize wie Ergebnis und Platzierung im Mittelpunkt stehen.

Objectives The aim of this study was to test whether achievement motive, autonomous forms of exercise motivation (intrinsic motivation, identified regulation), and controlled forms of exercise motivation (introjected regulation, external regulation) would predict gym attendance over 30 consecutive weeks in a sample of new gym members. Design A longitudinal prospective study with four distinct measurement occasions was employed. Psychological variables and gym attendance were assessed in the first, fourth, 15th, and 30th week after starting the membership. Method Participants were 229 new gym members. The implicit achievement motive was measured using the Picture Story Exercise. The explicit achievement motive and exercise motivations were measured with questionnaires. Gym attendance was obtained via self-reports and also recorded electronically. Multilevel growth modeling was used as the main analysis method. Results Participants overestimated their self-reported gym attendance; the overall gap between self-reported and actual attendance was 39%. The achievement motive did not predict participants’ gym attendance over the 30-week period, neither for self-reported nor for actual. The effect of autonomous motivation was mixed. Intrinsic motivation predicted self-reported, but not actual, gym attendance over the 30-week period, whereas the evolution of intrinsic motivation was unrelated to gym attendance. Identified regulation was unrelated to gym attendance, but the increase in identified motivation over time positively predicted both self-reported and actual gym attendance. Controlled motivation was unrelated to gym attendance. Conclusions Continuous and regular participation in an exercise program is more likely when individuals enjoy the program and consider it personally important.

Nach Krug und Kuhl (2006) sollten die Motivprofile von Leistungssportlern eine Passung zu den Anforderungen der jeweiligen Sportart aufweisen. Diesen Annahmen zufolge sollten bei Leistungssporttreibenden insbesondere das Leistungs- und Machtmotiv dominant sein. Im Rahmen zweier Studien wurde die Stärke des Macht-, Leistungs- und Anschlussmotivs von Leistungssporttreibenden mit denen von Freizeitsporttreibenden verglichen. In Studie 1 wurden die Motivprofile von 29 Leistungssporttreibenden mit denen von 34 Freizeitsportreibenden aus technik- und ausdauerorientierten Sportarten verglichen. An Studie 2 nahmen 86 Tennis-, Tischtennis- und Badmintonspieler als Hochleistungssportler teil deren Motivprofile mit denen von 57 Freizeitsporttreibenden aus interaktiven Sportarten verglichen wurden. Die impliziten Motive wurden mit Bildgeschichtenübungen (Picture Story Exercise, Operanter Motive Test) erhoben, die expliziten Motive mit Fragebögen (Zielsetzungsinventar, Personality Research Form). Die Ergebnisse bestätigen die Annahmen, dass Leistungssporttreibende höhere implizite und explizite Leistungsmotive als Freizeitsporttreibende zeigen. Die Unterschiede in den Anschlussmotiven und impliziten Machtmotiv wurden nur bei Hochleistungssportlern aus interaktiven Sportarten (Studie 2) gefunden.

Evidence shows that regular physical exercise reduces physiological reactivity to psychosocial stress. However, previous research mainly focused on the effect of endurance exercise, with only a few studies looking at the effect of resistance exercise. The current study tested whether individuals who regularly participate in either endurance or resistance training differ from untrained individuals in adrenal and cardiovascular reactivity to psychosocial stress. Twelve endurance-trained men, 10 resistance-trained men, and 12 healthy but untrained men were exposed to a standardized psychosocial stressor, the Trier Social Stress Test. Measurements of heart rate, free salivary cortisol levels, and mood were obtained throughout the test and compared among the three groups. Overall, both endurance- and resistance-trained men had lower heart rate levels than untrained men, indicating higher cardiac performance of the trained groups. Trained men also exhibited lower heart rate responses to psychosocial stress compared with untrained men. There were no significant group differences in either cortisol responses or mood responses to the stressor. The heart rate results are consistent with previous studies indicating reduced cardiovascular reactivity to psychosocial stress in trained individuals. These findings suggest that long-term endurance and resistance trainings may be related to the same cardiovascular benefits, without exhibiting strong effects on the cortisol reactivity to stress. published

Three studies investigated the role of action versus state orientation in how people deal with depletion of self-control resources. Action-oriented persons were expected to continue allocating resources and hence to perform better than state-oriented persons who were expected to conserve strength. Consistent with this, action-oriented persons performed better on the d2 test of attention than state-oriented persons after a strenuous physical exercise (Study 1), showed higher acuity on the critical fusion frequency test after a test of vigilance (Study 2), and performed better on the Stroop test after a depleting sensorimotor task (Study 3). No differences emerged between action- and state-oriented persons in their initial performance and in a non-depleting context. The impact of depletion on subsequent performance is thus not fixed, but moderated by personality.

OBJECTIVES: Our aim for this study was to test whether visual and verbal feedback compared with instructor-led feedback improve the quality of pediatric cardiopulmonary resuscitation (CPR). METHODS: There were 653 third-year medical students randomly assigned to practice pediatric CPR on 1 of 2 manikins (infant and adolescent; n = 344 and n = 309, respectively). They were further randomly assigned to 1 of 3 feedback groups: The instructor feedback (IF) group (n = 225) received traditional, instructor-led feedback without any additional feedback device. The device feedback (DF) group (n = 223) received real-time visual feedback from a feedback device. The instructor and device feedback (IDF) group (n = 205) received verbal feedback from an instructor who continuously reviewed the trainees’ performance using the feedback device. After the training, participants’ CPR performance was assessed on the same manikin while no feedback was being provided. RESULTS: For the primary outcome of total compression score, participants in the DF and IDF groups performed similarly, with both groups showing scores significantly (P CONCLUSIONS: Chest compression performance significantly improved with both visual and verbal feedback compared with instructor-led feedback. Feedback devices should be implemented during pediatric resuscitation training to improve resuscitation performance.

Using a dual-task paradigm, two experiments tested whether aroused implicit motives would moderate the exertion of self-control in motive-related tasks. In Study 1, 67 participants first watched a power dialogue and were then asked to either enact the dialogue or simply reproduce it by writing it down. In Study 2, 74 participants performed either the frustrating or the simple version of an achievement-related sensorimotor task. Participants who were high (compared to low) on the implicit power motive and had exerted power over another person subsequently showed more success at controlling their emotional responses (Study 1). Participants who were high (compared to low) on the implicit achievement motive and who had mastered a frustrating sensorimotor task scored better on a subsequent Stroop task (Study 2). Participants in the control conditions did not differ in self-control performance regardless of their level of implicit motives. These studies provide evidence that aroused implicit motives regulate how much self-control is exerted when performing motive-related tasks that require self-control.

Background: Based on the transtheoretical model, the current study investigated whether awareness of physical activity (PA) recommendations had an impact on the stages of PA behavior change and levels of PA among Chinese college students. Methods: In Study 1, with a cross-sectional study design, 9826 students were recruited, and their knowledge of international PA recommendations, PA stage distribution, and self-reported PA level were surveyed. Pearson's χ2 test was used to test whether those participants who were aware and not aware of PA guidelines were equally distributed across the stages of PA behavior, and independent t test was conducted to test the group difference in the actual levels of PA. In Study 2, 279 students who were not aware of the PA recommendations were randomly allocated to either an intervention group or a control group, and only those in the intervention group were presented with international PA guidelines. In both groups, students' PA stages and PA level were examined before the test and then 4 months post-test. McNemar's test for correlated proportions and repeated-measures analysis of variance were conducted to examine the changes in PA stage membership and PA level after the intervention. Results: Study 1 results revealed that only 4.4% of the surveyed students had correct knowledge of PA recommendations. Those who were aware of the recommendations were in later stages of PA behavior (χ2(4) = 167.19, p

Three studies investigated the relationship between the achievement motive and sport participation. It was expected that both the implicit and the explicit achievement motives are positively associated with how frequently people engage in sport activities. The implicit achievement motive was assessed with indirect motive measures; the explicit achievement motive was either inferred from participants’ personal goals or measured with self-reports. Two hundred five athletes participated including college students enrolled in leisure sport programs offered at their university (Study 1), amateur athletes registered in sports clubs (Study 2), and elite tennis athletes (Study 3). The implicit achievement motive consistently predicted sport participation in all three studies. In contrast, the explicit achievement motive was uncorrelated with sport participation. The interaction between the two motives did not yield an effect on sport participation. The results indicate that the implicit, unconscious need to achieve facilitates regular engagement in sport activities, but the explicit, conscious orientation toward achievement does not. The enrichment of sports environments with incentives for the implicit achievement motive may thus attract more people to participate in sport activities.

Zusammenfassung. Die Evaluation der Wirksamkeit von Interventionen zur Leistungsverbesserung ist eine der größten Herausforderungen der angewandten Sportpsychologie. Verschiedene Modellvorstellungen mit unterschiedlichen Evaluationsschwerpunkten existieren in anderen Bereichen der angewandten Psychologie. Dieser Beitrag stellt aktuelle Konzepte zur Ausbildungs-, Prozess- und Ergebnisevaluation in der Sportpsychologie sowie auch in anderen Fachdisziplinen (Klinische Psychologie) vor. Abschließend werden diese Erkenntnisse zusammengefasst und ein Ansatz zur Evaluation und Qualitätsoptimierung der sportpsychologischen Betreuungsarbeit in Deutschland vorgestellt.

The relationship between work-life balance (WLB) (i.e. the perceived sufficiency of the time available for work and social life) and well-being is well-documented. However, previous research failed to sufficiently explain why this relationship exists. In this research, the hypothesis was tested that a sufficient amount of the time available increases well-being because it facilitates satisfaction of personal needs. Using two separate samples (students and employees), the mediating role of need fulfilment in the relationship between WLB and well-being was supported. The results suggest that perceived sufficiency of the time available for work and social life predicts the level of well-being only if the individual's needs are fulfilled within that time.

Procrastination is an almost universal affliction, but often is poorly understood. In the present research, we investigated the effect of goal setting, interest enhancement and energy on procrastination. In addition, demographics were examined. Using a mega-trial, a sample of 9351 persons, the relationship of sex and age on procrastination was replicated and refined. Further, lack of energy showed the strongest relationship and mediated the effect of interest enhancement on procrastination. Also, a new boundary for goal setting was established, that its efficacy can be partially preempted when combined with interest enhancement. Building on this, future research should focus on other such interactions so we might determine what motivational techniques are redundant and choose the strongest interventions for specific people.

Abstract. Balance in life is an important predictor of well-being and health. This pilot research investigates the relationship between self-regulation and life balance, that is, the appropriate proportion of time spent across major life domains. In Study 1, time management was investigated as a self-regulatory competence. In contrast to expectations, time management showed only an indirect relationship to life balance through the perceived control over time. In Study 2, self-motivation, self-relaxation, and self-determination were studied as additional components of self-regulation. As expected, self-determination predicted life balance. Self-motivation and self-relaxation were linked to self-determination and showed an indirect relationship to life balance. In line with theoretical expectations, persons skilled in self-motivation and self-relaxation scored higher on self-determination, which, in turn, facilitated balance among life domains.

Using a dual-task paradigm, two experiments tested whether aroused implicit motives would moderate the exertion of self-control in motive-related tasks. In Study 1, 67 participants first watched a power dialogue and were then asked to either enact the dialogue or simply reproduce it by writing it down. In Study 2, 74 participants performed either the frustrating or the simple version of an achievement-related sensorimotor task. Participants who were high (compared to low) on the implicit power motive and had exerted power over another person subsequently showed more success at controlling their emotional responses (Study 1). Participants who were high (compared to low) on the implicit achievement motive and who had mastered a frustrating sensorimotor task scored better on a subsequent Stroop task (Study 2). Participants in the control conditions did not differ in self-control performance regardless of their level of implicit motives. These studies provide evidence that aroused implicit motives regulate how much self-control is exerted when performing motive-related tasks that require self-control.