Column-editor : James M. Mensch
Kenneth L. Knight, Jody B. Brucker, Paul D. Stoneman and Mack D. Rubley
Janie L. Kelly and Alison R. Valier
reported in English. 6. Limited to studies of level 3 evidence or better. 7. Limited to the last 10 years (2006–2015). Exclusion 1. Studies that did not investigate injury prevention, such as injury management. 2. Studies that investigated non-LLOI, such as back injuries or upper limb injuries. 3. Studies
Bradford Strand, Shannon David, Katie J. Lyman and Jay M. Albrecht
The purpose of this original research was to survey high school coaches in four states in the Midwest region of the United States regarding their knowledge of first aid, cardiopulmonary resuscitation (CPR), and use of an Automated External Defibrillator (AED) as well as confidence in managing/treating emergency situations. Responses to general knowledge inquiries revealed that coaches were able to accurately answer questions related to return to play, level of consciousness, external bleeding, and cardiac arrest. However, coaches were unable to correctly answer questions specific to rest, ice, compression, and elevation (RICE) and also misidentified information related to pediatric AED use. Because sudden cardiac death is the leading cause of death and has been linked to lack of bystander intervention, the results of this project should be considered by coaches and administrators to implement certification and continuing education for high school coaches. Finally, coaches who were certified in first aid, CPR, and AED were more confident in treating an individual who required care compared with coaches not certified. Therefore, individuals who coach at all levels of sport and recreational activities should consider formal training and certification.
Amy Barrette and Katherine Harman
comfortable reaching out to their rehabilitation specialists when they needed guidance. Therefore, like Robbins and Rosenfeld’s findings, 41 our study suggests that a good relationship between athletes and their coaches/rehabilitation specialists would have a positive impact on injury management. Conclusion
Darren P. Morton and Robin Callister
To determine whether changes in lung function are associated with exercise-related transient abdominal pain (ETAP).
Twenty-eight subjects susceptible to ETAP performed a flow-volume loop before (pre) and after (post) treadmill exercise. Fourteen of the subjects developed symptoms of ETAP during the exercise and completed the flow-volume loop while the pain was present. The remaining 14 subjects reported no symptoms of ETAP.
Forced inspiratory vital capacity was essentially unchanged from pre to post in both groups (ETAP group −0.8% ± 5.1%, comparison group −0.9% ± 6.5%). Peak inspiratory-flow rate increased in both the ETAP group (12.4% ± 16.2%) and the comparison group (17.9% ± 16.6%), but the difference between groups (−4.6%, standardized effect size [EF] = −0.17) was trivial. Forced expiratory vital capacity decreased by approximately 4% in both groups (ETAP group −3.9% ± 3.3%, comparison group −4.0% ± 5.1%). Small differences in the mean change from pre to post between groups were recorded for peak expiratory-flow rate (−7.4%, EF = −0.28) and the forced expiratory volume in the first second of the test (−4.4%, EF = −0.44).
ETAP does not appear to be associated with reduced inspiratory performance, suggesting that the diaphragm is not implicated directly in the etiology of ETAP. Expiratory power might be slightly reduced during an episode of ETAP, but the magnitude of this effect is unlikely to compromise exercise performance.
Kaitlyn J. Weiss, Sian V. Allen, Mike R. McGuigan and Chris S. Whatman
To establish the relationship between the acute:chronic workload ratio and lower-extremity overuse injuries in professional basketball players over the course of a competitive season.
The acute:chronic workload ratio was determined by calculating the sum of the current week’s session rating of perceived exertion of training load (acute load) and dividing it by the average weekly training load over the previous 4 wk (chronic load). All injuries were recorded weekly using a self-report injury questionnaire (Oslo Sports Trauma Research Center Injury Questionnaire20). Workload ratios were modeled against injury data using a logistic-regression model with unique intercepts for each player.
Substantially fewer team members were injured after workload ratios of 1 to 1.49 (36%) than with very low (≤0.5; 54%), low (0.5–0.99; 51%), or high (≥1.5; 59%) workload ratios. The regression model provided unique workload–injury trends for each player, but all mean differences in likelihood of being injured between workload ratios were unclear.
Maintaining workload ratios of 1 to 1.5 may be optimal for athlete preparation in professional basketball. An individualized approach to modeling and monitoring the training load–injury relationship, along with a symptom-based injury-surveillance method, should help coaches and performance staff with individualized training-load planning and prescription and with developing athlete-specific recovery and rehabilitation strategies.
Daniel Martínez-Silván, Jaime Díaz-Ocejo and Andrew Murray
To analyze the influence of training exposure and the utility of self-report questionnaires on predicting overuse injuries in adolescent endurance athletes.
Five adolescent male endurance athletes (15.7 ± 1.4 y) from a full-time sports academy answered 2 questionnaires (Recovery Cue; RC-q and Oslo Sports Trauma Research questionnaire; OSTRC-q) on a weekly basis for 1 season (37 wk) to detect signs of overtraining and underrecovery (RC-q) and early symptoms of lower-limb injuries (OSTRC-q). All overuse injuries were retrospectively analyzed to detect which variations in the questionnaires in the weeks preceding injury were best associated. Overuse incidence rates were calculated based on training exposure.
Lower-limb overuse injuries accounted for 73% of total injuries. The incidence rate for overuse training-related injuries was 10 injuries/1000 h. Strong correlations were observed between individual running exposure and overuse injury incidence (r2 = .66), number of overuse injuries (r2 = .69), and days lost (r2 = .66). A change of 20% or more in the RC-q score in the preceding week was associated with 67% of the lower-limb overuse injuries. Musculoskeletal symptoms were only detected in advance by the OSTRC-q in 27% of the episodes.
Training exposure (especially running exposure) was shown to be related to overuse injuries, suggesting that monitoring training load is a key factor for injury prevention. Worsening scores in the RC-q (but not the OSTRC) may be an indicator of overuse injury in adolescent endurance runners when used longitudinally.
Jeremy R. Hawkins and Shawn W. Hawkins
Cryotherapy is commonly used by athletic trainers, although evidence is inconsistent to support its usage. Data are also lacking as to how athletic trainers treat common injuries with cryotherapy. The purpose of this study was to ascertain how collegiate athletic trainers approach the use of cryotherapy and whether that usage reflects what little we know about the modalities. Survey results indicated great variability in respondents’ approaches to the treatment of an acute and subacute ankle sprain. Additional data are needed to create clear treatment guidelines with respect to cryotherapy. Certain aspects of the application of cryotherapy should be reviewed and use adjusted accordingly.