M R Lininger, S W Yeargin, R M Hirschhorn, J Mensch
{"title":"Assessing the validity of a helmet fit checklist in a sample of youth football players.","authors":"M R Lininger, S W Yeargin, R M Hirschhorn, J Mensch","doi":"10.1080/15438627.2021.1988949","DOIUrl":"https://doi.org/10.1080/15438627.2021.1988949","url":null,"abstract":"<p><p>The dynamics of American youth football make it critical to ensure that helmets are appropriately fit to decrease the risk of injuries. Currently, there is only one researcher-developed checklist to determine helmet fit, and psychometric testing is lacking; therefore, the aim of this work was to determine the validity of the checklist. The 13-item checklist was used to measure helmet fit in 267 youth football players prior to the start of the season. Using a Principal Components Analysis to assess validity, a 5-component model was found explaining 58% of the available variance. These results suggest that a single, summative score should not be used for this checklist; rather five scores should be calculated for each component (<i>stability, snugness, size, integrity</i>, and <i>accessory)</i>. A more practical and valid tool to assess fit, such as a sub-sectioned chronological American football-specific checklist, can better assist coaches/administrators responsible for helmet fit and player safety.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9684364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A critical appraisal of ankle rehabilitative interventions.","authors":"John McCreadie, Olivia Whyte, Matt Greig","doi":"10.1080/15438627.2021.2001648","DOIUrl":"https://doi.org/10.1080/15438627.2021.2001648","url":null,"abstract":"<p><p><i>Introduction</i> Lateral ankle sprain is a common musculoskeletal pathology. Functional exercise progression is vital to restore full function. <i>Aim</i> The aim of this study was to compare the electromyographical response to a standard balance task on one stable and four unstable surfaces. <i>Participants</i> Twenty subjects (5 male, 15 females; age at 23 ± 7.1 years) were recruited to participate in the study. <i>Methods</i> A gym-based single session cross over design was used to compare peak and mean surface EMG (sEMG) activity of the Peroneus Longus, Tibilais Anterior and medial head of the gastrocnemius muscles whilst performing a standardized balance task on one stable surface and four unstable surfaces stable surface. <i>Results</i> A significant main effect for surface was found. Post-hoc testing revealed that the Floor and Trampoline (Trampet) elicited similar mean sEMG response. <i>Discussion</i> The results of the study propose a safe and stepwise progressive rehabilitation regime following ankle injury whilst considering the healing process of the injured structure.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9693899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"40-min nap opportunity attenuates heart rate and perceived exertion and improves physical specific abilities in elite basketball players.","authors":"Maher Souabni, Omar Hammouda, Mehdi J Souabni, Mohamed Romdhani, Tarak Driss","doi":"10.1080/15438627.2022.2064221","DOIUrl":"https://doi.org/10.1080/15438627.2022.2064221","url":null,"abstract":"<p><p>The effect of a 40-min nap opportunity on physiological responses and specific abilities was investigated. Twelve high-level professional basketball players (26.33±5.2 years; 193.17±7.1 m; 87.48±11.2 kg) undertook randomly 40-min nap opportunity (NAP) and control condition (CON). Wellness (Hooper Index) and Epworth Sleepiness Scale (ESS) were measured before and after both conditions. Defensive (DA) and offensive (OA) agility and upper body power (UBP) were assessed after both conditions. Shooting skill (SST) performance was evaluated prior and after a fatiguing task (FT). Heart rate (HR) and rating of perceived exertion (RPE) were recorded during SST-test, FT and SST-retest. ESS, Hooper's stress and fatigue score were significantly lower after nap compared to those before nap (0.009 ≤ p ≤ 0.03). Better performance was obtained in NAP compared to CON condition for DA, OA and UBP (0.0005 ≤ p ≤ 0.02). SST performance was significantly higher in NAP compared to CON in the retest session (p = 0.003, Δ = 20.2%). The improved performance was associated with significant lower HR<sub>peak</sub> (p = 0.01, Δ = 5.25%) and RPE (p = 0.003, Δ = 15.12%). In conclusion, NAP reduced sleepiness and stress and fatigue and enhances physical outcomes of specific skills in elite basketball players.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49692195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joanna Wakefield-Scurr, Amy Sanchez, Melissa Jones
{"title":"A multi-stage intervention assessing, advising and customising sports bras for elite female British athletes.","authors":"Joanna Wakefield-Scurr, Amy Sanchez, Melissa Jones","doi":"10.1080/15438627.2022.2038162","DOIUrl":"https://doi.org/10.1080/15438627.2022.2038162","url":null,"abstract":"<p><p>Appropriate breast support is recommended in sport; however, what constitutes appropriate support is complex, individual and often sports specific, particularly in elite sport given the wear duration. This intervention educated, assessed and advised elite British female athletes on breasts and bras; those with unresolved issues engaged in bespoke bra interventions. Following educational workshops (n = 80), breast/bra surveys (n = 60), individual bra assessments (n = 37); a rower, shooter, and hockey player participated in the bespoke bra intervention. Eighty-three per cent of athletes rated their breast/bra knowledge as ≤average. Fifty-one per cent experienced breast pain, affecting performance for 29%; seven used medication and one surgery to relieve symptoms. In individual bra assessments most wore ill-fitting, unsupportive bras and wanted bra advice. Bespoke bra interventions eliminated breast pain: for the rower, improved breast position and spine rotation; for the shooter, repositioned tissue and improved performance; and for the hockey player, accommodated smart devices. Whilst bespoke bra development is challenging, most elite athlete breast/bra issues are resolved via education, advice and fitting.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10416650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sebastian Klich, Pascal Madeleine, Krzysztof Ficek, Klaudia Sommer, Cesar Fernández-de-Las-Peñas, Lori A Michener, Adam Kawczyński
{"title":"Functional and morphological changes in shoulder girdle muscles after repeated climbing exercise.","authors":"Sebastian Klich, Pascal Madeleine, Krzysztof Ficek, Klaudia Sommer, Cesar Fernández-de-Las-Peñas, Lori A Michener, Adam Kawczyński","doi":"10.1080/15438627.2022.2042295","DOIUrl":"10.1080/15438627.2022.2042295","url":null,"abstract":"<p><p>This study aimed to investigate the acute effect of repeated climbing actions on functional and morphological measures of the shoulder girdle. Fifteen male indoor climbers participated in this study. All the climbers declared route level 6a+, as the best climbing grade (French climbing grade scale). Functional (range of motion - ROM and muscle strength), and morphological measurements (muscle/tendon stiffness and thickness) after a repeated climbing exercise protocol were analysed. The ROM and muscle strength showed significant decreases from baseline to Immediate-Post (IA) as well as significant increases from IA to 1 h-Post for all movements (p ≤ .001 for all). Muscle stiffness showed significant increases from baseline to IA after as well as significant decreases from IA to 1 h-Post for all muscles (p ≤ .001 for all). However, the thickness showed significant increases from baseline to IA for supraspinatus tendon and muscle thickness and occupation ratio (p ≤ .001 for all), while a significant decrease was observed in acromiohumeral distance (p ≤ .001). Significant decreases from IA to 1 h-Post were found for muscles/tendons and occupation ratio (p ≤ .001 for all), while a significant increase for AHD (p ≤ .001). Our data demonstrated acute alterations in tendon thickness due to acute signs of implement symptom in climbers.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39642720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Artur Avelino Birk Preissler, Thaís Reichert, Pedro Schons, Rochelle Rocha Costa, Rodrigo Sudatti Delevatti, Benedito Sérgio Denadai, Luiz Fernando Martins Kruel
{"title":"External Loads of Elite Soccer Referees: A Systematic Review with meta-analysis.","authors":"Artur Avelino Birk Preissler, Thaís Reichert, Pedro Schons, Rochelle Rocha Costa, Rodrigo Sudatti Delevatti, Benedito Sérgio Denadai, Luiz Fernando Martins Kruel","doi":"10.1080/15438627.2021.1988948","DOIUrl":"https://doi.org/10.1080/15438627.2021.1988948","url":null,"abstract":"<p><p>The objective of the present study was to describe the total and fragmented external loads, at different intensities, of soccer referees in European and South American competitions during official matches through a systematic review and meta-analysis of cross-sectional studies. A systematic review was conducted in April, 2020. In all, 32 studies were included, incorporating 578 referees evaluated in 3170 games through video analysis or a global positioning system. Regarding external loads, it was observed that the total average distance covered by the referees was 10,461.74 m, with running speeds predominantly below 13 km.h<sup>-1</sup>. The total distance covered by the referees in the European competitions was higher and more intense than that of the referees in the South American tournaments, being 11,187.02 m and 9319.61 m, respectively. We suggest that referees' training can be organized according to the distances found at different intensities, in which low-intensity races can be performed below 13 km.h-<sup>1</sup> with distances of approximately 4500 m, while high-intensity training can be developed with speeds from 18 to 24 km.h-<sup>1</sup> for approximately 800 m. In addition, planning must consider the competition characteristics.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9684362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rafael L Kons, Jonathan Ache-Dias, Rodrigo G Gheller, Chris Bishop, Daniele Detanico
{"title":"Bilateral deficit in the countermovement jump and its associations with judo-specific performance.","authors":"Rafael L Kons, Jonathan Ache-Dias, Rodrigo G Gheller, Chris Bishop, Daniele Detanico","doi":"10.1080/15438627.2021.2024542","DOIUrl":"https://doi.org/10.1080/15438627.2021.2024542","url":null,"abstract":"<p><p>This study aimed to describe the bilateral deficit (BLD) during the countermovement jump (CMJ) in judo athletes and determine the relationship between the BLD and judo-specific performance. Fourteen male judo athletes participated. Athletes performed three specific judo tests, Maximal Sprint Speed Judo Test, Maximal Aerobic Speed Judo Test and Special Judo Fitness Test (SJFT), and double- and single-leg CMJ. The following CMJ variables were used: jump height (JH), mean (MPO) and peak (PPO) power output, peak force (PF), peak velocity (PV) and impulse (IMP). The Pearson's or Spearman's test were used (p < 0.05). The results show that the BLD is found in all CMJ parameters (20 to 31%). Negative correlations between first set of SJFT<sub>TT</sub> (total throws) and BLD in PF (r = -0.60; p= 0.022) and between the second set of SJFT<sub>TT</sub> and BLD in MPO (r= -0.74;p = 0.002), PV (r =-0.59;p = 0.025) and IMP (r =-0.55; p = 0.040) were found. Also, negative correlations between SJFT<sub>TT</sub> and the BLD in all CMJ parameters (r= -0.53 to -0.85; p < 0.05) were found. Higher values of BLD are related to poor SJFT<sub>TT</sub> performance.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10039385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Stanley Sai-Chuen Hui, Jinde Liu, Yi-Jian Yang, James Ho-Pong Wan, Bonhomme Kwai-Ping Suen
{"title":"Yi Jin Bang exercise versus usual exercise therapy to treat subacromial pain syndrome: a pilot randomised controlled trial.","authors":"Stanley Sai-Chuen Hui, Jinde Liu, Yi-Jian Yang, James Ho-Pong Wan, Bonhomme Kwai-Ping Suen","doi":"10.1080/15438627.2022.2052070","DOIUrl":"https://doi.org/10.1080/15438627.2022.2052070","url":null,"abstract":"<p><p>To evaluate the effect of Yi Jin Bang (YJB) exercise on pain, disability, flexibility, and muscular endurance in individuals with subacromial pain syndrome (SAPS). Fifty-four adults with SAPS were randomly allocated into either a YJB (n = 18), a usual exercise therapy (UET; n = 18), or a control group (n = 18). YJB and UET interventions involved 10 weeks of home-based exercise training, with four sessions per week. The control group received no treatment. Outcome measures included Shoulder Pain and Disability Index (SPADI), pain at rest and during activity, flexion and abduction range of motion (ROM), back scratch test, and shoulder abduction endurance test. These measures were assessed at baseline, immediately after a single face-to-face session (acute effects), and after 10 weeks of intervention (chronic effects). For acute effects, significant group-by-time interactions were observed for flexion ROM, abduction ROM, and the back scratch test (all <i>p</i> < 0.05). For chronic effects, significant group-by-time interactions were found for pain during activity, the SPADI score, and the back scratch test (all <i>p</i> < 0.05). Home-based YJB exercise is comparable to home-based UET in reducing pain and disability and improving flexibility.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49692201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G S Pinheiro, R C Quintão, J G Claudino, C Carling, M Lames, B P Couto
{"title":"High rate of muscle injury despite no changes in physical, physiological and psychophysiological parameters in a professional football team during a long-congested fixture period.","authors":"G S Pinheiro, R C Quintão, J G Claudino, C Carling, M Lames, B P Couto","doi":"10.1080/15438627.2022.2038159","DOIUrl":"10.1080/15438627.2022.2038159","url":null,"abstract":"<p><p>This study aimed to analyse match availability, participation, and muscle injury incidence and to compare the effect of time intervals between matches (3-4 versus 6-7 days) on physical, physiological, and psychophysiological parameters in a professional football team during a prolonged congested fixture period. Thirteen professional male football players (29.2 ± 4.8 years old; 78.5 ± 8.3 kg; 179.3 ± 8.8 cm;) participated. Data were collected during 17 consecutive weeks for 35 official matches separated by an average interval of ≤ 3.5 days. Results showed a player availability of 84.8 ± 16.1% while match participation was 68.8% ± 6.4%. Muscle injury incidence was 19.0/ 1,000 hours of match exposure. These injuries occurred after individual players participated in sequences of 8.3 ± 3.3 consecutive matches with intervals of 3.8 ± 0.8 days. No differences were observed in physical performance or in fatigue-related parameters irrespective of the time interval between matches. A high player availability rate was observed. No differences were observed in physical, physiological, and psychophysiological indices of performance when comparing shorter and longer time intervals between consecutive matches.Prolonged exposure to fixture congestion resulted in an high risk of incurring muscle injury.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39623304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diogo Coutinho, Bruno Gonçalves, Sara Santos, Bruno Travassos, Wolfgang Schöllhorn, Jaime Sampaio
{"title":"The effects of individual and collective variability on youth players' movement behaviours during football small-sided games.","authors":"Diogo Coutinho, Bruno Gonçalves, Sara Santos, Bruno Travassos, Wolfgang Schöllhorn, Jaime Sampaio","doi":"10.1080/15438627.2022.2042293","DOIUrl":"10.1080/15438627.2022.2042293","url":null,"abstract":"<p><p>This study aimed to identify the effects of playing with additional individual (IND), collective (COL) or individual-collective (MIX) variability on youth football players' performance during small-sided games. Twelve youth football players (U17, age = 16.1 ± 0.9 years) played a goalkeeper (Gk) + 6 outfield players a-side (Gk+6vs6+Gk) under four conditions: (i) playing in the 1:2:3:1 formation without any other rule (control condition, CTR); (ii) 1:2:3:1 formation with additional body restrictions changing each minute (individual condition, IND); (iii) using different tactical formations modified each minute (collective condition, COL; (iv) using different tactical formations and body restrictions varied each minute (individual-collective condition, MIX). Generally, there were similar behaviours across conditions, especially for the CTR and the MIX. Nevertheless, the CTR condition presented moderate higher values in the lateral direction (p ≤ .05), while also higher longitudinal synchronization compared to the IND (p ≤ .05). The COL condition presented higher spatial exploration (p ≤ .05), which may justify the higher values for distance covered while running and sprinting (p ≤ .05). Overall, coaches may use the IND condition to refine players' technical actions, while the COL condition to develop players' ability to perform in different playing positions and team structures.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39949783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}