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Objective: Physical activity (PA) is essential to promote both optimal physical and emotional health in preschool children. Hence, well-founded PA guidelines are essential. 24-hour Movement Guidelines (which include PA, recreational screen time and sleep) have been established. Thus, this study aimed to explore preschool-aged children's adherence to the 24-hour PA guidelines assessed using microelectromechanical systems, and whether sex was a determining factor for meeting the guidelines. Method: A systematic review of relevant published articles was carried out using four databases (PubMed, ProQuest, SCOPUS, FECYT) up until April, 2023. Results: From a total of 519 studies initially located, 48 were included in our synthesis. Of the studies analysed for this review, 7 showed results below 30% compliance with the PA guidelines, 19 below 70%, and 22 from 70% to 100%. In terms of sex differences, the studies analysed in the review suggested that boys are more likely to meet PA guidelines than girls. There exists controversy about adherence to PA levels as age increases. Several studies have shown an increase in the early years (1–5) while others, although to a lesser extent, have found that total PA remained stable or decreased from 3 to 5 years. Conclusion: In the light of these findings, more research is needed to better understand trends in PA during the preschool years and the factors that influence them. In the meantime, promoting regular PA and reducing recreational screen time remain key priorities for the health and development of preschool-aged children. [ABSTRACT FROM AUTHOR]

Background: Carers of people with Alzheimer's disease often have a high degree of commitment and dedication which may also compromise physical and emotional, leisure, and occupational self-care. This study aimed to explore health-related quality of life (HRQoL) and psychoemotional variables in caregivers with and without caregiver overload and its relationship. Methods: A single-measure cross-sectional correlational study was carried out involving 59 informal caregivers of people with Alzheimer's disease with a mean age of 59.30 (±10.58). The participants completed the adult HRQoL questionnaires (EQ-5D-3L), Zarit Burden Inventory test, General Happiness Questionnaire, Satisfaction with Life Scale, Rosenberg self-esteem scale, Occupational Balance Questionnaire (OBQ-E), International Fitness Scale (IFIS), Family Apgar scale, and Duke-UNC-11 Functional Social Support Questionnaire. Results: A significantly higher level of HRQoL (p = 0.029) in subjective happiness (p = 0.018), perceived social support (p = 0.046), avoidance (p = 0.034), occupational balance (p = 0.002), life satisfaction (p = 0.037), and self-perceived physical fitness (p = 0.021) was found in caregivers without perceived overload. Also, HRQoL was directly associated with self-perceived physical fitness (β = 0.534; p < 0.001) and occupational balance (β = 0.375; p < 0.001) and self-esteem (β = 0.249; p < 0.016). Conclusions: Caregivers who do not perceive overload have better levels of HRQoL and psychoemotional variables, establishing a relationship between HRQoL with self-perceived physical fitness, occupational balance, and self-esteem. [ABSTRACT FROM AUTHOR]

Subjective cognitive impairment in older persons has a substantial influence on their quality of life and can progress to serious illnesses such as dementia. Physical activity level can help prevent cognitive decline and improve cognitive performance. The aim of this study was to investigate the association between frequency of physical activity and subjective cognitive impairment in Spanish adults aged 65 and over, and to identify different risk factors. Using data from the EHSS20 survey, the study focused on 7082 participants who provided information on cognitive impairment and physical activity. Key predictor variables included age, gender, BMI, marital status, and education level. A significant relationship was found between BMI category and gender, with 66.5% of the population being overweight or obese. Men were more likely to be overweight than women. Socio-demographic factors such as educational level, marital status, and physical activity frequency showed dependent associations with sex. Women had a higher prevalence of subjective cognitive impairment than men. A strong association was found between frequency of physical activity and subjective cognitive impairment, with inactive older people having the highest prevalence of subjective cognitive impairment. Older women who engage in little physical exercise and have less education are at risk for subjective cognitive impairment. Furthermore, for both men and women, being overweight was associated with a more reduced risk than obesity. Significant relationships were also discovered between subjective cognitive impairment, frequency of physical exercise, gender, BMI, and degree of education. In conclusion, older, sedentary women with high BMI and less education are more likely to experience subjective cognitive impairment. [ABSTRACT FROM AUTHOR]

High-intensity activities are related to success in football. We looked at whether high-intensity activity differed between home and away matches and its impact on the final score. Thirty football players (20.3 ± 0.8 years) were recruited from a Spanish semi-professional team. Footballers wore a GPS device to monitor high-intensity parameters from competition matches. The final score of every match was also recorded. Playing at home showed greater total distance (TD) > 24 km/h, >27 km/h, >85% Vmax, and the number of sprints > 24 km/h (all p < 0.05) than playing away. Positive correlations were also found between the match score and high-speed running (HSR) distance covered by the team per minute (r = 0.401), TD > 21 km/h (r = 0.417), TD > 24 km/h (r = 0.343), number of sprints > 24 km/h (r = 0.337), and HSR per minute (r = 0.459) (all p < 0.05). The results suggest that playing at home is associated with greater high-intensity effort than playing away. Moreover, the volume of high-intensity effort influences the final score. [ABSTRACT FROM AUTHOR]

The proportion of aged populations is increasing worldwide. Exercise has a palliating effect on some adverse implications of aging. Multicomponent training (MCT) is a recommended form of exercise for the aged population. The aims of this research were to (1) study the number of publications regarding MCT in the aged population following an exponential growth rate; (2) identify the journals, authors, and countries that stand out the most in this area; and (3) describe the most common themes and used keywords in this field. The analysis was performed through the traditional laws of bibliometrics, including, Price's, Lotka's, Bradford's, and Zipf's law. All documents published in journals indexed in the Web of Science (WoS) Core Collection from 2001 to November 2023 that met the inclusion criteria were included. The 485 documents included in this review revealed that the number of annual publications experienced an exponential growth phase, 15 journals with six or more publications formed the core journals on this topic, and the author Mikel Izquierdo and his collaborative network topped the lists of prominent and prolific co-authors. Spain was the leading country in number of publications. Various thematic lines and keywords regarding strength, sarcopenia, quality of life, falls, balance, dual-task exercise, and cognitive and physical functioning were identified. In conclusion, this work confirmed that research on this topic is going through an exponential growth phase and provided detailed information about the journals, authors, and countries involved in the subject, as well as the keywords most frequently used in the subject matter. [ABSTRACT FROM AUTHOR]

This study assessed the validity of 5-m (TG5) and 10-m (TG10) split times measured with timing gates to estimate maximum sprint speed (MSS) against a criterion measure radar gun (RG) during the maximum velocity phase of a 30-m sprint. Nineteen amateur rugby players performed two 30-m sprints. The timing gates were placed at the starting line and at 5-, 10-, 20-, 25- and 30-m. In addition, a RG was used to measure instantaneous velocity. Both trials per participant were used selected as references. MSS obtained from TG10, TG5 and RG showed high intraclass correlation coefficients (0.971–0.978), low coefficients of variation (1.14–1.70%) and smallest detectable changes (<0.02 m/s). Pairwise comparison revealed differences (p = 0.002) in MSS when comparing TG10 to RG, but not TG5 and RG (p = 0.957). Almost perfect correlations were found between RG, TG5 and TG10 (r > 0.926, p < 0.001). In conclusion, MSS obtained from TG5, TG10 and RG presented good intra-session reliability. However, practitioners should be aware that substantial differences exist between TG10 and RG. For the assessment of MSS in team-sport athletes, it is recommended the use of TG5 for more accurate estimations when a gold standard criterion is not available. [ABSTRACT FROM AUTHOR]

Purpose: To analyze and compare the effects of 4 different resisted sprint training (RST) modalities on youth soccer players' performance after 8 weeks of training. Methods: Forty-eight youth soccer players were first randomly assigned to 4 groups and only then completed 8 weeks of RST: horizontal resisted sprint, vertical resisted sprint (VRS), combined resisted sprint, and unresisted sprint. Performance in horizontal and vertical jumps, sprint, and change of direction (COD) ability were assessed 1 week before and after the training intervention. Magnitude-based inference analysis was performed for calculating within-group pre–post differences. In addition, an analysis of covariance test was performed for between-group comparison, using the pretest values as covariates. After that, the analysis of covariance P values and the effect statistic were transformed to magnitude-based inference. Results: Within-group outcomes showed that all resisted training modalities experienced improvements in sprint (small to moderate) and COD (small to large) performance. Moreover, all groups, except unresisted sprint, enhanced the horizontal jump performance. However, only VRS improved on vertical jump. Between-group comparison outcomes revealed that only VRS improved the sprint time compared with horizontal resisted sprint (moderate) and COD performance compared with all groups (moderate to large). In addition, VRS enhanced the countermovement jump performance (small to large) compared with the other groups. Conclusions: Independent of the orientation of the resistance applied, RST is an effective training method for improving sprinting and COD performance. Nevertheless, VRS may promote greater improvements on sprint and COD ability and have a positive additional effect on countermovement jump performance and the reduction of COD deficit. [ABSTRACT FROM AUTHOR]