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Background: Despite being the most commonly incurred sports injury with a high recurrence rate, there are no guidelines to inform return to sport (RTS) decisions following acute lateral ankle sprain injuries. We aimed to develop a list of assessment items to address this gap., Methods: We used a three-round Delphi survey approach to develop consensus of opinion among 155 globally diverse health professionals working in elite field or court sports. This involved surveys that were structured in question format with both closed-response and open-response options. We asked panellists to indicate their agreement about whether or not assessment items should support the RTS decision after an acute lateral ankle sprain injury. The second and third round surveys included quantitative and qualitative feedback from the previous round. We defined a priori consensus being reached at >70% agree or disagree responses., Results: Sixteen assessment items reached consensus to be included in the RTS decision after an acute lateral ankle sprain injury. They were mapped to five domains with 98% panellist agreement-PAASS: P ain (during sport participation and over the last 24 hours), A nkle impairments (range of motion; muscle strength, endurance and power), A thlete perception (perceived ankle confidence/reassurance and stability; psychological readiness), S ensorimotor control (proprioception; dynamic postural control/balance), S port/functional performance (hopping, jumping and agility; sport-specific drills; ability to complete a full training session)., Conclusion: Expert opinion indicated that pain severity, ankle impairments, sensorimotor control, athlete perception/readiness and sport/functional performance should be assessed to inform the RTS decision following an acute lateral ankle sprain injury., Trial Registration Number: ACTRN12619000522112., Competing Interests: Competing interests: KT, TB, OBAO, ED and EV are on the BJSM Editorial Board., (© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.)

Purpose : To determine the association between training-load (TL) factors, baseline characteristics, and new injury and/or pain (IP) risk in an endurance sporting population (ESP). Methods : Ninety-five ESP participants from running, triathlon, swimming, cycling, and rowing disciplines initially completed a questionnaire capturing baseline characteristics. TL and IP data were submitted weekly over a 52-wk study period. Cumulative TL factors, acute:chronic workload ratios, and exponentially weighted moving averages were calculated. A shared frailty model was used to explore time to new IP and association to TL factors and baseline characteristics. Results : 92.6% of the ESP completed all 52 wk of TL and IP data. The following factors were associated with the lowest risk of a new IP episode: (a) a low to moderate 7-d lag exponentially weighted moving averages (0.8-1.3: hazard ratio [HR] = 1.21; 95% confidence interval [CI], 1.01-1.44; P  = .04); (b) a low to moderate 7-d lag weekly TL (1200-1700 AU: HR = 1.38; 95% CI, 1.15-1.65; P  < .001); (c) a moderate to high 14-d lag 4-weekly cumulative TL (5200-8000 AU: HR = 0.33; 95% CI, 0.21-0.50; P  < .001); and (d) a low number of previous IP episodes in the preceding 12 mo (1 previous IP episode: HR = 1.11; 95% CI, 1.04-1.17; P  = .04). Conclusions : To minimize new IP risk, an ESP should avoid high spikes in acute TL while maintaining moderate to high chronic TLs. A history of previous IP should be considered when prescribing TLs. The demonstration of a lag between a TL factor and its impact on new IP risk may have important implications for future ESP TL analysis.

Competing Interests: Competing interests: None declared.

Objectives: To determine the effect of three different static-dynamic stretching protocols on sprint and jump performance in Gaelic footballers., Design: Double-blind, controlled, crossover trial., Setting: Sports Institute research environment., Participants: Seventeen male elite level Gaelic footballers, aged 18-30 years, completed three stretching protocols., Main Outcome Measures: Athletic performance was measured by countermovement jump height and power, and timed 10 m, 20 m, and 40 m sprints., Results: Static stretching reduced sprint speed by 1.1% over 40 m and 1.0% over 20 m. Static stretching also reduced countermovement jump height by 10.6% and jump power by 6.4%. When static stretching was followed by dynamic stretching, sprint speed improved by 1.0% over 20 m and 0.7% over 40 m (p < 0.05). The static - dynamic stretching protocol also improved countermovement jump height by 8.7% (p < 0.01) and power by 6.7% (p < 0.01)., Conclusions: Static stretching reduces sprint speed and jump performance. Static stretching should be followed by dynamic stretching during warm-up to nullify any performance deficits caused by static stretching., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Deciding when to return to sport after injury is complex and multifactorial-an exercise in risk management. Return to sport decisions are made every day by clinicians, athletes and coaches, ideally in a collaborative way. The purpose of this consensus statement was to present and synthesise current evidence to make recommendations for return to sport decision-making, clinical practice and future research directions related to returning athletes to sport. A half day meeting was held in Bern, Switzerland, after the First World Congress in Sports Physical Therapy. 17 expert clinicians participated. 4 main sections were initially agreed upon, then participants elected to join 1 of the 4 groups-each group focused on 1 section of the consensus statement. Participants in each group discussed and summarised the key issues for their section before the 17-member group met again for discussion to reach consensus on the content of the 4 sections. Return to sport is not a decision taken in isolation at the end of the recovery and rehabilitation process. Instead, return to sport should be viewed as a continuum, paralleled with recovery and rehabilitation. Biopsychosocial models may help the clinician make sense of individual factors that may influence the athlete's return to sport, and the Strategic Assessment of Risk and Risk Tolerance framework may help decision-makers synthesise information to make an optimal return to sport decision. Research evidence to support return to sport decisions in clinical practice is scarce. Future research should focus on a standardised approach to defining, measuring and reporting return to sport outcomes, and identifying valuable prognostic factors for returning to sport., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/)

Background: Soccer (football) players often have hip and groin symptoms (HGS), and a previous groin injury is a risk factor for a relapse. Decreased hip range of motion (HROM) has been related to both hip and groin pain and the presence of a cam deformity. How these factors interact is unknown., Purpose: The first aim was to study whether HGS are associated with HROM. The second aim was to study the association of the presence of a cam deformity with HROM. Additionally, the influence of a cam deformity on the relationship between HGS and HROM was examined., Study Design: Cross-sectional study; Level of evidence, 3., Methods: Seasonal screening data of 2 professional soccer clubs were used. Variables for HGS were current hip or groin pain, the Copenhagen Hip and Groin Outcome Score (HAGOS), and previous hip- and groin-related time-loss injuries (HGTIs). HROM was determined for hip internal rotation (IR), external rotation, and total rotation (TR) in the supine position and for the bent knee fall out (BKFO) test. A cam deformity was defined by an alpha angle >60° on standardized anteroposterior pelvic and frog-leg lateral radiographs., Results: Sixty players (mean [±SD] age, 23.1 ± 4.2 years) were included. All were noninjured at the time of screening. Current hip or groin pain was not associated with HROM. Hips of players in the lowest HAGOS interquartile range (thus most affected by complaints; n = 12) showed less IR (23.9° ± 8.7° vs 28.9° ± 7.8°, respectively; P = .036) and TR (58.2° ± 13.5° vs 65.6° ± 11.8°, respectively; P = .047) than those in the highest interquartile range (n = 29). No such differences were found for BKFO (P = .417). Hips of players with a previous HGTI showed less IR (21.1° ± 6.8° vs 28.3° ± 8.9°, respectively; P < .001) and TR (56.0° ± 8.2° vs 64.5° ± 13.6°, respectively; P < .001) than those without a previous HGTI. This was independent of the presence of a cam deformity. BKFO did not differ between groups (P = .983). Hips with a cam deformity showed less but nonsignificant IR (25.5° ± 10.3° vs 29.0° ± 7.1°, respectively; P = .066) and TR (P = .062) and higher but nonsignificant BKFO values (17.1 cm ± 3.4 cm vs 14.2 cm ± 4.6 cm, respectively; P = .078) than those without a cam deformity., Conclusion: Decreased HROM in professional soccer players is associated with more hip- and groin-related symptoms and with previous injuries, independent of the presence of a cam deformity., (© 2015 The Author(s).)

Background: Benchmarking is an established means of identifying levels of specialist practice and competence-based interviews are a tool used to facilitate this. The London 2012 Olympic and Paralympic Games (LOCOG) provided an opportunity to introduce a pragmatic approach to assess expert behaviour in large numbers of volunteer physiotherapists., Aim: To test inter-tester repeatability of an assessment matrix used to score clinical expertise in a sporting context, followed by reporting on the findings for physiotherapy selection., Methods: Four volunteers were videoed answering an identical sport-specific clinical scenario. Recordings were initially scored by two experienced assessors (gold standard). Subsequently, nine assessors scored the same videos then compared with the gold standard. 602 physiotherapists were assessed during volunteer interviews for LOCOG. Scores were compared to those based on self-reported clinical experience. Cross-tabulation was used to determine levels of agreement for the initial scoring matrix and the relationship between the two scoring systems was analysed., Results: Levels of agreement ranged from 22% to 88%. A good correlation (r=0.754 p>0.001) was found between self-reported clinical experience and scenario scores. Marginal data points in the correlational analysis indicated that only 52% of participants attained the same score across assessments., Conclusions: A tool to facilitate assessment for large scale selection could be used for Host Nation physiotherapist selection for Major Games. There is a need to train assessors in this environment, as well as provide detailed matrices, specific to each context being assessed, to ensure that observations can be made on domain-specific and general, non-technical aspects., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.)

Background: Cold Water Immersion (CWI) is commonly used to manage delayed onset muscle soreness (DOMS) resulting from exercise. Scientific evidence for an optimal dose of CWI is lacking and athletes continue to use a range of a treatment protocols and water temperatures., Objectives: To compare the effectiveness of four different water immersion protocols and a passive control intervention in the management of DOMS., Design: Randomised controlled trial with blinded outcome assessment., Setting: University Research Laboratory., Participants: 50 healthy participants with laboratory induced DOMS randomised to one of five groups: Short contrast immersion (1 min 38 °C/1 min 10 °C × 3), Short intermittent CWI (1 min × 3 at 10 °C); 10 min CWI in 10 °C; 10 min CWI in 6 °C; or control (seated rest)., Main Outcome Measures: muscle soreness, active range of motion, pain on stretch, muscle strength and serum creatine kinase., Results: 10 min of CWI in 6 °C was associated with the lowest levels of muscle soreness and pain on stretch however values were not statistically different to any of the other groups. There were no statistically significant differences between groups for any other outcomes., Conclusion: Altering the treatment duration, water temperature or dosage of post exercise water immersion had minimal effect on outcomes relating to DOMS., (Copyright © 2014 Elsevier Ltd. All rights reserved.)

Background: There is a lack of information on the utilisation of physiotherapy services at the Olympic Games., Aim: To better understand the athlete and non-athlete requirements of the physiotherapy services at the Olympic Village Polyclinic during the London 2012 Olympic Games., Methods: From 16 July to 14 August 2012, physiotherapy encounters for athletes and non-athletes (National Olympic Committee (NOC) team officials, coaches, team managers, workforce, Olympic family, technical officials and press) were recorded on the ATOS electronic medical records system at the polyclinic in the main Athletes' Village in Stratford., Results: Of the 1778 encounters, 1219 (69%) were administered to athletes and 559 (31%) to non-athletes. The anatomical areas most frequently recorded at the first visits for athletes were knee (15.4%), lumbar spine/lower back (15.2%) and upper leg (12.6%) and that for non-athletes were lumbar spine/lower back (19.8%), knee (15.8%) and neck/cervical spine. Muscle (33.3%) and joint injuries (24.8%) were the most common diagnoses in athletes and non-athletes (24.4% and 30.1%). The five most frequently used treatment modalities were therapeutic soft tissue techniques (23.3%), mobilisation techniques (21.8%), taping (8.9%), cryotherapy (6.9%) and exercise prescription (6.4%). The most common cause of athletes' injuries was overuse (43.6%)., Conclusions: This study of the London 2012 Olympic Games workload highlights the physiotherapy needs of athletes as well as non-athletes and identifies the high numbers of pre-existing and overuse injuries in this setting, providing an insight into the reasons why the athletes seek physiotherapy support during the Olympic Games.

Participants with ankle instability demonstrate more foot inversion during the stance phase of gait than able-bodied subjects. Invertor excitation, coupled with evertor inhibition may contribute to this potentially injurious position. The purpose of this experiment was to examine evertor/invertor muscle activation and foot COP trajectory during walking in participants with functional ankle instability (FI). Twelve subjects were identified with FI and matched to healthy controls. Tibialis anterior (TA) and peroneus longus (PL) electromyography (EMG), as well as COP, were recorded during walking. Functional analyses were used to detect differences between FI and control subjects with respect to normalized EMG and COP trajectory during walking. Relative to matched controls, COP trajectory was more laterally deviated in the FI group from 20% to 90% of the stance phase. TA activation was greater in the FI group from 15% to 30% and 45% to 70% of stance. PL activation was greater in the FI group at initial heel contact and toe off and trended lower from 20% to 40% of stance in the FI group. Altered motor strategies appear to contribute to COP deviations in FI participants and may increase the susceptibility to repeated ankle inversion injury., (Copyright © 2011 Elsevier Ltd. All rights reserved.)

Objectives: To evaluate the feasibility of a randomized-controlled trial (RCT) investigating the effects of adding auricular acupuncture (AA) to exercise for participants with chronic low-back pain (CLBP)., Methods: Participants with CLBP were recruited from primary care and a university population and were randomly allocated (n=51) to 1 of 2 groups: (1) "Exercise Alone (E)"-12-week program consisting of 6 weeks of supervised exercise followed by 6 weeks unsupervised exercise (n=27); or (2) "Exercise and AA (EAA)"-12-week exercise program and AA (n=24). Outcome measures were recorded at baseline, week 8, week 13, and 6 months. The primary outcome measure was the Oswestry Disability Questionnaire., Results: Participants in the EAA group demonstrated a greater mean improvement of 10.7% points (95% confidence interval, -15.3,-5.7) (effect size=1.20) in the Oswestry Disability Questionnaire at 6 months compared with 6.7% points (95% confidence interval, -11.4,-1.9) in the E group (effect size=0.58). There was also a trend towards a greater mean improvement in quality of life, LBP intensity and bothersomeness, and fear-avoidance beliefs in the EAA group. The dropout rate for this trial was lower than anticipated (15% at 6 mo), adherence with exercise was similar (72% E; 65% EAA). Adverse effects for AA ranged from 1% to 14% of participants., Discussion: Findings of this study showed that a main RCT is feasible and that 56 participants per group would need to be recruited, using multiple recruitment approaches. AA was safe and demonstrated additional benefits when combined with exercise for people with CLBP, which requires confirmation in a fully powered RCT.

Applying ice or other forms of topical cooling is a popular method of treating sports injuries. It is commonplace for athletes to return to competitive activity, shortly or immediately after the application of a cold treatment. In this article, we examine the effect of local tissue cooling on outcomes relating to functional performance and to discuss their relevance to the sporting environment. A computerized literature search, citation tracking and hand search was performed up to April, 2011. Eligible studies were trials involving healthy human participants, describing the effects of cooling on outcomes relating to functional performance. Two reviewers independently assessed the validity of included trials and calculated effect sizes. Thirty five trials met the inclusion criteria; all had a high risk of bias. The mean sample size was 19. Meta-analyses were not undertaken due to clinical heterogeneity. The majority of studies used cooling durations > 20 minutes. Strength (peak torque/force) was reported by 25 studies with approximately 75% recording a decrease in strength immediately following cooling. There was evidence from six studies that cooling adversely affected speed, power and agility-based running tasks; two studies found this was negated with a short rewarming period. There was conflicting evidence on the effect of cooling on isolated muscular endurance. A small number of studies found that cooling decreased upper limb dexterity and accuracy. The current evidence base suggests that athletes will probably be at a performance disadvantage if they return to activity immediately after cooling. This is based on cooling for longer than 20 minutes, which may exceed the durations employed in some sporting environments. In addition, some of the reported changes were clinically small and may only be relevant in elite sport. Until better evidence is available, practitioners should use short cooling applications and/or undertake a progressive warm up prior to returning to play.

This case report describes the occurrence of bilateral myositis ossificans in the rectus femoris muscles of a young Gaelic football player with a long history of recurrent bilateral thigh strain. In each case, clinical diagnosis was followed up with biochemical profiling and sonographic investigations. Management consisted of rest from elite level competition and intense rehabilitation to address any potential risk factors for rectus femoris strain. A 4-week course of acetic acid iontophoresis was administered to the first myositis ossificans lesion on the left thigh; however, as this did not result in any significant changes to the lesion's dimensions, it was not used on the contralateral lesion. The athlete returned to full sporting capacity 4 months after the first lesion was diagnosed. A 13-month follow-up showed that the athlete continued to play to full capacity with no recurrence of injury.