Open Access Journal of Sports Medicine最新文献

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Factors Associated with Ball Velocity and Low Back Pain During Kicking in Adolescent Soccer Players. 青少年足球运动员踢球时球速与腰痛的相关因素。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-09-07 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S262990
Michio Tojima, Seira Takei, Suguru Torii
{"title":"Factors Associated with Ball Velocity and Low Back Pain During Kicking in Adolescent Soccer Players.","authors":"Michio Tojima,&nbsp;Seira Takei,&nbsp;Suguru Torii","doi":"10.2147/OAJSM.S262990","DOIUrl":"https://doi.org/10.2147/OAJSM.S262990","url":null,"abstract":"<p><strong>Purpose: </strong>The factors associated with low back pain (LBP) and the relationship between LBP and ball velocity during kicking motion of adolescent soccer players remain largely unknown. This study aims to clarify the relationship between increasing ball velocity and LBP in adolescent soccer players.</p><p><strong>Participants and methods: </strong>Adolescent soccer players were divided into two groups according to the presence and absence of LBP (LBP group, n=38 and NBP (no back pain) group, n=29, respectively). Real-time kick motion was measured using a three-dimensional motion analysis system and the angle of the lumbar spine, hip, and center of mass (COM) were calculated. Regression analysis was used to identify factors associated with ball velocity and LBP. In addition, Pearson's correlation coefficients were determined between the angle of the lumbar spine and hip, and ball velocity and position of COM in the extracted phase from regression analysis.</p><p><strong>Results: </strong>The major factor associated with increasing ball velocity was the rotation angle of both hips (Adjusted R<sup>2</sup>=0.244) and vertical position of COM during kicking (Adjusted R<sup>2</sup>=0.262). Furthermore, the factors associated with LBP were the flexion angle of kick-side hip (OR=1.126) and abduction angle of both hips (kick-side OR=1.124; support-side OR=0.872). The factors for ball velocity and LBP were related to the maximum hip extension phase. In the hip extension phase of kicking, compared with the NBP group, the LBP group showed lesser extension and external rotation of the kick-side hip angle. In the hip flexion phase of kicking, the ball velocity was correlated with vertical (r=0.56)/anterior (r=0.46) position of COM in the NBP group.</p><p><strong>Conclusion: </strong>To compensate for this restricted hip motion, the LBP group could extend and rotate their lumbar spine, which may likely cause stress to this region.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"133-143"},"PeriodicalIF":2.4,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S262990","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38525486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Injury Analysis in Professional Soccer by Means of Media Reports - Only Severe Injury Types Show High Validity. 基于媒体报道的职业足球损伤分析——只有严重损伤类型具有高效度。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-08-07 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S251081
Volker Krutsch, Stephan Grechenig, Oliver Loose, Leonard Achenbach, Johannes Zellner, Heiko Striegel, Volker Alt, Johannes Weber, Markus Braun, Stephan Gerling, Werner Krutsch
{"title":"Injury Analysis in Professional Soccer by Means of Media Reports - Only Severe Injury Types Show High Validity.","authors":"Volker Krutsch,&nbsp;Stephan Grechenig,&nbsp;Oliver Loose,&nbsp;Leonard Achenbach,&nbsp;Johannes Zellner,&nbsp;Heiko Striegel,&nbsp;Volker Alt,&nbsp;Johannes Weber,&nbsp;Markus Braun,&nbsp;Stephan Gerling,&nbsp;Werner Krutsch","doi":"10.2147/OAJSM.S251081","DOIUrl":"https://doi.org/10.2147/OAJSM.S251081","url":null,"abstract":"Purpose Injury data of professional soccer players obtained from media reports are frequently used in scientific research, but the accuracy of such data is still unclear. Patients and Methods Injuries of professional soccer players of the German first and second league were documented by continuously screening media reports over one season (2015–2016). After the season, the validity of media-reported injuries was anonymously analyzed by the team physicians of 8 different soccer clubs. Results A total of 255 injuries of 240 players of 8 professional soccer teams had been published online, of which 146 were confirmed by the team doctors as correct, yielding a rate of 57.3% of confirmed media-reported injuries. In addition, 92 injuries without media registration were detected and added to the online statistics, resulting in 347 injuries and an overall weak validity of media-based data of 42.1%. Statistical analysis showed that the validity of media-reported injury data depended on both the individual soccer club and the body site affected by injury: publications on knee injuries (78.2%) had a higher validity than those on foot injuries (46.2%), and publications on severe injuries had a higher validity (joint dislocation: 100%; ligament rupture: 82.9%; fracture: 73.3%) than those on minor injuries. Publications on specific severe soccer injuries, such as anterior cruciate ligament (ACL) injuries, had a validity of 100%. Conclusion Media-based injury data were only valid for a few severe injury types such as ACL injuries. In daily soccer routine and scientific research, media-based data should thus only be used in combination with specific criteria or verification processes.","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"123-131"},"PeriodicalIF":2.4,"publicationDate":"2020-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S251081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38343321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Power Analysis of Field-Based Bicycle Motor Cross (BMX). 越野自行车越野赛(BMX)功率分析。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-07-10 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S256052
Amin Daneshfar, Carl Petersen, Daniel Gahreman, Beat Knechtle
{"title":"Power Analysis of Field-Based Bicycle Motor Cross (BMX).","authors":"Amin Daneshfar,&nbsp;Carl Petersen,&nbsp;Daniel Gahreman,&nbsp;Beat Knechtle","doi":"10.2147/OAJSM.S256052","DOIUrl":"https://doi.org/10.2147/OAJSM.S256052","url":null,"abstract":"<p><strong>Introduction: </strong>Power meter is a useful tool for monitoring cyclists' training and race performance. However, limited data are available regarding BMX racing power output. The aim of this study was to characterise the power production of BMX riders and investigate its potential role on race performance.</p><p><strong>Methods: </strong>Fourteen male riders (age: 20.3 ± 1.5 years, height: 1.75 ± 0.05 m, mass: 70.2 ± 6.4 kg) participated in this study. The tests consist of performing two races apart from 15-min recovery. SRM power meter was used to record power and cadence. Cyclists' fastest race was used for the data analysis. Heart rate was recorded at 1-s intervals using a Garmin HR chest strap. Lap time was recorded using four pairs of photocells positioned at the start gate, bottom of the start ramp, end of first corner (time cornering), and on the finish line.</p><p><strong>Results: </strong>There was a large correlation between race time and relative peak power (r = -0.68, <i>p</i> < 0.01) as well as average power with zero value excluded (r = -0.52, <i>p</i> < 0.01). Race time was also significantly associated with time cornering (r = 0.58, <i>p</i> < 0.01). Peak power (1288.7 ± 62.6 W) was reached in the first 2.34 second of the race. With zero values included, the average power was 355.8 ± 25.4 W, which was about 28% of the peak power, compared to 62% when zero values were excluded (795.6 ± 63.5 W).</p><p><strong>Conclusion: </strong>The post-race analysis of the power data might help the cyclists recognizing the need to apply certain strategies on pedalling rates and power production in certain portions of the BMX track, specially, at the start and around the first corner. BMX coaches must consider designing training programs based on the race intensity and power output zones.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"113-121"},"PeriodicalIF":2.4,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S256052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38248610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Epidemiological Data on LCL and PCL Injuries Over 17 Seasons in Men's Professional Soccer: The UEFA Elite Club Injury Study. 男子职业足球17个赛季LCL和PCL伤病的流行病学数据:欧足联精英俱乐部伤病研究。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-05-13 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S237997
Matilda Lundblad, Martin Hägglund, Christoffer Thomeé, Eric Hamrin Senorski, Jan Ekstrand, Jón Karlsson, Markus Waldén
{"title":"Epidemiological Data on LCL and PCL Injuries Over 17 Seasons in Men's Professional Soccer: The UEFA Elite Club Injury Study.","authors":"Matilda Lundblad,&nbsp;Martin Hägglund,&nbsp;Christoffer Thomeé,&nbsp;Eric Hamrin Senorski,&nbsp;Jan Ekstrand,&nbsp;Jón Karlsson,&nbsp;Markus Waldén","doi":"10.2147/OAJSM.S237997","DOIUrl":"https://doi.org/10.2147/OAJSM.S237997","url":null,"abstract":"<p><strong>Background: </strong>There is limited epidemiological information on injury rates and injury mechanisms for lateral collateral ligament (LCL) and posterior cruciate ligament (PCL) injuries in male professional soccer. In addition, time trends and lay-off times for these injuries have not yet been determined.</p><p><strong>Aim: </strong>To determine injury rates and circumstances of LCL and PCL injuries over 17 seasons in men's professional soccer.</p><p><strong>Methods: </strong>A prospective cohort study, in which 68 professional European soccer teams were followed over 17 consecutive seasons (2001/2002 to 2017/2018). The teams' medical staff recorded player exposure and time-loss injuries. Lay-off time was reported as the median and the first and third quartile. Injury rate was defined as the number of injuries per 1000 player-hours.</p><p><strong>Results: </strong>One hundred and twenty-eight LCL and 28 PCL injuries occurred during 2,554,686 h of exposure (rate 0.05 and 0.01/1000 h, respectively). The median lay-off time for LCL injuries was 15 (Q<sub>1</sub>=7, Q<sub>3</sub>=32) days, while it was 31 days for PCL injuries (Q<sub>1</sub>=15, Q<sub>3</sub>=74). The match injury rate for LCL injuries was 11 times higher than the training injury rate (0.21 vs 0.02/1000 h, rate ratio [RR] 10.5, 95% CI 7.3 to 15.1 p<0.001) and the match injury rate for PCL injuries was 20 times higher than the training injury rate (0.056 vs 0.003/1000 h, RR 20.1, 95% CI 8.2 to 49.6, p<0.001). LCL injuries saw a significant annual decrease of approximately 3.5% (p=0.006). In total, 58% (63/108) of all LCL injuries and 54% (14/26) of all PCL injuries were related to contact mechanism.</p><p><strong>Conclusion: </strong>This study with prospectively registered data on LCL and PCL injuries in men's professional soccer shows that the median lay-off from soccer for LCL and PCL injuries is approximately 2 and 4 weeks respectively. These rare knee ligament injuries typically occur during matches and are associated with a contact injury mechanism.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"105-112"},"PeriodicalIF":2.4,"publicationDate":"2020-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S237997","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38010593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Evaluation and Management of Hand, Wrist and Elbow Injuries in Ice Hockey. 冰球运动中手、腕、肘损伤的评估与处理。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-04-28 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S246414
Liana J Tedesco, Hasani W Swindell, Forrest L Anderson, Eugene Jang, Tony T Wong, Jonathan K Kazam, R Kumar Kadiyala, Charles A Popkin
{"title":"Evaluation and Management of Hand, Wrist and Elbow Injuries in Ice Hockey.","authors":"Liana J Tedesco,&nbsp;Hasani W Swindell,&nbsp;Forrest L Anderson,&nbsp;Eugene Jang,&nbsp;Tony T Wong,&nbsp;Jonathan K Kazam,&nbsp;R Kumar Kadiyala,&nbsp;Charles A Popkin","doi":"10.2147/OAJSM.S246414","DOIUrl":"https://doi.org/10.2147/OAJSM.S246414","url":null,"abstract":"<p><p>Ice hockey continues to be a popular, fast-paced, contact sport enjoyed internationally. Due to the physicality of the game, players are at a higher risk of injury. In the 2010 Winter Olympics, men's ice hockey had the highest injury rate compared to any other sport. In this review, we present a comprehensive analysis of evaluation and management strategies of common hand, wrist, and elbow injuries in ice hockey players. Future reseach focusing on the incidence and outcomes of these hand, wrist and elbow injuries in ice hockey players is warranted.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"93-103"},"PeriodicalIF":2.4,"publicationDate":"2020-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S246414","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37949476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The Effect of Extracorporeal Shock Wave Therapy in the Treatment of Patients with Trigger Finger. 体外冲击波疗法治疗扳机指的疗效观察。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-03-09 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S232727
Babak Vahdatpour, Fahimeh Momeni, Ali Tahmasebi, Parisa Taheri
{"title":"The Effect of Extracorporeal Shock Wave Therapy in the Treatment of Patients with Trigger Finger.","authors":"Babak Vahdatpour,&nbsp;Fahimeh Momeni,&nbsp;Ali Tahmasebi,&nbsp;Parisa Taheri","doi":"10.2147/OAJSM.S232727","DOIUrl":"https://doi.org/10.2147/OAJSM.S232727","url":null,"abstract":"<p><strong>Introduction: </strong>Trigger finger disorder is a sudden release or locking of a finger during flexion or extension. Regarding the complications and disadvantages mentioned for the methods used in the treatment of trigger finger disorder, the aim of this study was to investigate the effect of extracorporeal shock wave therapy in the treatment of patients with trigger finger.</p><p><strong>Methods: </strong>This study was an interventional study recruiting 19 patients with trigger finger disorder. Evaluation of pain severity, severity of triggering, and functional impact of triggering was carried out using the Visual Analogue Scale, Trigger Finger Score suggested by Quinnell, and Quick-Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire, respectively, before intervention, immediately after intervention, and in 6 and 18 weeks after intervention. Each patient was treated with extracorporeal shock wave therapy in three sessions with a 1-week interval. Data were analyzed in Statistical Package for the Social Sciences (SPSS) software using ANOVA to monitor changes in pain severity, severity of triggering, and functional impact of triggering during follow-ups.</p><p><strong>Results: </strong>There were statistically significant differences with regard to reduction of the pain severity, severity of triggering, and functional impact of triggering before intervention, immediately after intervention, and in 6 and 18weeks after intervention (<i>P</i><0.01). However, the effect of extracorporeal shock wave therapy on reducing severity of triggering immediately after intervention did not yield a statistically significant difference compared to before intervention (<i>P</i>>0.01).</p><p><strong>Conclusion: </strong>It seems that extracorporeal shock wave therapy leads to a reduction in pain severity, severity of triggering, and functional impact of triggering. These effects persisted until the 18th week after the intervention. It is recommended to use extracorporeal shock wave therapy in terms of a non-invasive intervention with no significant complications for patients with trigger finger.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"85-91"},"PeriodicalIF":2.4,"publicationDate":"2020-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S232727","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37770866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Small-Sided Games are More Enjoyable Than High-Intensity Interval Training of Similar Exercise Intensity in Soccer. 小范围比赛比类似运动强度的高强度间歇训练更有趣。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-03-04 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S244512
Okba Selmi, Ibrahim Ouergui, Danielle E Levitt, Pantelis T Nikolaidis, Beat Knechtle, Anissa Bouassida
{"title":"Small-Sided Games are More Enjoyable Than High-Intensity Interval Training of Similar Exercise Intensity in Soccer.","authors":"Okba Selmi,&nbsp;Ibrahim Ouergui,&nbsp;Danielle E Levitt,&nbsp;Pantelis T Nikolaidis,&nbsp;Beat Knechtle,&nbsp;Anissa Bouassida","doi":"10.2147/OAJSM.S244512","DOIUrl":"https://doi.org/10.2147/OAJSM.S244512","url":null,"abstract":"<p><strong>Introduction: </strong>High-intensity interval training (HIIT) and small-sided games (SSG) have been applied and tested for athletes in order to enhance the soccer performance. For this reason, this experimental study aimed to compare the effects of SSGs and HIIT on power, physiological responses and perceived enjoyment.</p><p><strong>Materials and methods: </strong>Sixteen youth soccer players (age, 17.5±0.6 years, mean±standard deviation; height, 178.2±6.4 cm; body mass, 70.4±5.4 kg; body fat, 10.6±0.8%) completed one session each of HIIT and SSG on separate days with 1 week between sessions. Each session lasted 25 mins (4x4 mins work with 3 mins of passive recovery in-between). SSGs consisted of 4 versus 4 player games on a 25×35 m pitch, and HIIT consisted of intermittent 15-s runs at 110% maximal aerobic speed separated by 15 s of passive recovery. Psychological responses following each protocol were assessed using the Physical Activity Enjoyment Scale (PACES). Heart rate (HR) was continuously recorded, rating of perceived exertion (RPE) and lactate concentration [La] were measured after each training session. Lower body muscular power was assessed using the 5-jump test relative to leg length (5JT-relative) before and after each training session, where greater average distance per stride over five sequential jumping strides indicated greater muscular power.</p><p><strong>Results: </strong>HIIT and SSG showed no significant difference in HR, RPE and [La] responses (p=0.70, ES=0.11; p=0.61, ES=0.08 and p=0.38, ES=0.21, respectively). 5JT-relative decreased significantly for SSG and HIIT (p<0.05, ES=0.50 and p<0.05, ES=0.40, respectively). PACES score was greater in SSG compared to HIIT (ES=5.35, p<0.001).</p><p><strong>Conclusion: </strong>HIIT and SSG sessions induced similar physiological responses; however, SSGs induced a higher enjoyment level than HIIT. Coaches could choose between these training modalities according to the objective of their training session, considering the enjoyment-related advantages of SSGs.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"77-84"},"PeriodicalIF":2.4,"publicationDate":"2020-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S244512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37770865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
The Relationship Between Acute: Chronic Workload Ratios and Injury Risk in Sports: A Systematic Review. 急性、慢性工作量比率与运动损伤风险之间的关系运动中急性:慢性工作量比率与受伤风险之间的关系:系统回顾
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-02-24 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S231405
Danny Maupin, Ben Schram, Elisa Canetti, Robin Orr
{"title":"The Relationship Between Acute: Chronic Workload Ratios and Injury Risk in Sports: A Systematic Review.","authors":"Danny Maupin, Ben Schram, Elisa Canetti, Robin Orr","doi":"10.2147/OAJSM.S231405","DOIUrl":"10.2147/OAJSM.S231405","url":null,"abstract":"<p><strong>Purpose: </strong>Low injury rates have previously been correlated with sporting team success, highlighting the importance of injury prevention programs. Recent methods, such as acute:chronic workload ratios (ACWR) have been developed in an attempt to predict and manage injury risk; however, the relation between these methods and injury risk is unclear. The aim of this systematic review was to identify and synthesize the key findings of studies that have investigated the relationship between ACWR and injury risk.</p><p><strong>Methods: </strong>Included studies were critically appraised using the Downs and Black checklist, and a level of evidence was determined. Relevant data were extracted, tabulated, and synthesized.</p><p><strong>Results: </strong>Twenty-seven studies were included for review and ranged in percentage quality scores from 48.2% to 64.3%. Almost perfect interrater agreement (κ = 0.885) existed between raters. This review found a high variability between studies with different variables studied (total distance versus high speed running), as well as differences between ratios analyzed (1.50-1.80 versus ≥1.50), and reference groups (a reference group of 0.80-1.20 versus ≤0.85).</p><p><strong>Conclusion: </strong>Considering the high variability, it appears that utilizing ACWR for external (eg, total distance) and internal (eg, heart rate) loads may be related to injury risk. Calculating ACWR using exponentially weighted moving averages may potentially result in a more sensitive measure. There also appears to be a trend towards the ratios of 0.80-1.30 demonstrating the lowest risk of injury. However, there may be issues with the ACWR method that must be addressed before it is confidently used to mitigate injury risk. Utilizing standardized approaches will allow for more objective conclusions to be drawn across multiple populations.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"51-75"},"PeriodicalIF":2.4,"publicationDate":"2020-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/98/df/oajsm-11-51.PMC7047972.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37726461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simplified Measurement of Maximum Strength After Knee Surgery: Application-Based Knee-Training Device Compared to Isokinetic Testing. 膝关节手术后最大力量的简化测量:基于应用的膝关节训练装置与等速测试的比较。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-01-22 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S214598
Hauke Horstmann, Pascal Medico, Florian Lasch, Werner Krutsch, Thomas Sanjay Weber-Spickschen
{"title":"Simplified Measurement of Maximum Strength After Knee Surgery: Application-Based Knee-Training Device Compared to Isokinetic Testing.","authors":"Hauke Horstmann,&nbsp;Pascal Medico,&nbsp;Florian Lasch,&nbsp;Werner Krutsch,&nbsp;Thomas Sanjay Weber-Spickschen","doi":"10.2147/OAJSM.S214598","DOIUrl":"https://doi.org/10.2147/OAJSM.S214598","url":null,"abstract":"<p><strong>Context: </strong>Isokinetic testing is used as a standard tool in measuring strength in professional athletes. It is often used to evaluate improvement during rehabilitation. The disadvantages of isokinetic testing include its costs, the fact that it is not portable, and its risk of injury, which makes it not suitable for early postoperative rehabilitation.</p><p><strong>Hypothesis: </strong>The aim of this study was to investigate the relationship between the results of the isokinetic testing and the measurements of an application-based knee-training device.</p><p><strong>Study design: </strong>Exploratory diagnostic study.</p><p><strong>Methods: </strong>In this monocentric study, 100 subjects performed an isokinetic maximum strength examination and an assessment on the application-based knee-training device in a randomized order. The isokinetic testing was based on the Swiss Olympic protocol with 3 sets of 5 repetitions of maximum strength testing for flexion and extension. The subjects consisted of 50 healthy professional athletes and 50 healthy recreational athletes, half male and half female, between the ages of 18 to 30 years old.</p><p><strong>Results: </strong>No medical or technical issues were reported. The analysis of the relationship between application-based knee-training device and extension showed a Pearson correlation coefficient of r=0.667 for the left knee and r=0.604 for the right knee. For flexion, the Pearson correlation coefficient was r=0.640 for the left side and r=0.673 for the right side. When strength measured by the application-based knee-training device was adjusted for height and weight of the subjects, the Pearson correlation was even stronger (extension left: r=0.727, right: r=0.689; flexion left: r=0.641, right: r=0.711).</p><p><strong>Conclusion: </strong>The study shows a moderate to high correlation between isokinetic testing and the application-based knee-training device. These results suggest that the application-based knee-training device is effective for early strength rehabilitation without the risk of injury.</p>","PeriodicalId":51644,"journal":{"name":"Open Access Journal of Sports Medicine","volume":"11 ","pages":"43-49"},"PeriodicalIF":2.4,"publicationDate":"2020-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2147/OAJSM.S214598","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37726460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Wearing Compression Stockings on Exercise Performance and Associated Indicators: A Systematic Review. 穿紧身衣对运动表现及相关指标的影响:系统回顾。
IF 2.4
Open Access Journal of Sports Medicine Pub Date : 2020-01-22 eCollection Date: 2020-01-01 DOI: 10.2147/OAJSM.S198809
Gustavo R Mota, Mário Antônio de Moura Simim, Izabela Aparecida Dos Santos, Jeffer Eidi Sasaki, Moacir Marocolo
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引用次数: 11
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