{"title":"足球运动员在非预期侧步切入时,执行切入角度和速度与下肢关节角度之间的关系","authors":"","doi":"10.1016/j.gaitpost.2024.09.006","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Certain movements patterns have been indicated in knee injuries during cutting while running tasks. Differences in the executed cut angle (ECA) could partially account for group differences in joint kinematics previously observed, including sex differences.</p></div><div><h3>Research question</h3><p>Are there relationships between joint angles with entry speed and ECA during side-step cutting in soccer players?</p></div><div><h3>Methods</h3><p>This cross-sectional study recruited 21 (10 females) soccer players. Participants completed 45° unanticipated side-step cuts in both directions. Kinematic data were captured with a 12 camera motion capture system with 46 reflective markers placed on the participants. Peak joint angles were determined during the stance phase of the cutting task. Entry speed and ECA were determined from pelvis markers. Hierarchical linear models examined relationships between angles, entry speed, and ECA, after accounting for age, sex, and leg preference. Regression coefficients with 95 % confidence intervals were reported and statistical significance (p<0.05) were examined using the Wald statistic.</p></div><div><h3>Results</h3><p>The mean ECA (24.6°) was lower than the intended 45° angle. Peak joint angles were significantly related to both ECA and entry speed. Specifically, an increase in ECA by 10° (i.e., sharper cuts) would increase hip internal rotation and ankle plantarflexion by 1.8–2.1°, and decrease hip adduction, knee abduction and ankle eversion by 1.3–2.4°. Faster entry speeds by 0.5 m/s would increase hip flexion, hip internal rotation and knee extension angles by 1.8–3.8°, and decrease knee abduction by 2.6°.</p></div><div><h3>Significance</h3><p>Studies evaluating cutting while running should consider ECA and entry speed in their design. Potential differences could confound between-group comparisons of joint angles, including when comparing sexes, and impact interpretations of injury risk.</p></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0966636224006131/pdfft?md5=9d463f04d70980ee4ff3847861aae3c5&pid=1-s2.0-S0966636224006131-main.pdf","citationCount":"0","resultStr":"{\"title\":\"The relationship between executed cut angle and speed with lower extremity joint angles during unanticipated side-step cutting in soccer players\",\"authors\":\"\",\"doi\":\"10.1016/j.gaitpost.2024.09.006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p>Certain movements patterns have been indicated in knee injuries during cutting while running tasks. Differences in the executed cut angle (ECA) could partially account for group differences in joint kinematics previously observed, including sex differences.</p></div><div><h3>Research question</h3><p>Are there relationships between joint angles with entry speed and ECA during side-step cutting in soccer players?</p></div><div><h3>Methods</h3><p>This cross-sectional study recruited 21 (10 females) soccer players. Participants completed 45° unanticipated side-step cuts in both directions. Kinematic data were captured with a 12 camera motion capture system with 46 reflective markers placed on the participants. Peak joint angles were determined during the stance phase of the cutting task. Entry speed and ECA were determined from pelvis markers. Hierarchical linear models examined relationships between angles, entry speed, and ECA, after accounting for age, sex, and leg preference. Regression coefficients with 95 % confidence intervals were reported and statistical significance (p<0.05) were examined using the Wald statistic.</p></div><div><h3>Results</h3><p>The mean ECA (24.6°) was lower than the intended 45° angle. Peak joint angles were significantly related to both ECA and entry speed. Specifically, an increase in ECA by 10° (i.e., sharper cuts) would increase hip internal rotation and ankle plantarflexion by 1.8–2.1°, and decrease hip adduction, knee abduction and ankle eversion by 1.3–2.4°. Faster entry speeds by 0.5 m/s would increase hip flexion, hip internal rotation and knee extension angles by 1.8–3.8°, and decrease knee abduction by 2.6°.</p></div><div><h3>Significance</h3><p>Studies evaluating cutting while running should consider ECA and entry speed in their design. Potential differences could confound between-group comparisons of joint angles, including when comparing sexes, and impact interpretations of injury risk.</p></div>\",\"PeriodicalId\":12496,\"journal\":{\"name\":\"Gait & posture\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0966636224006131/pdfft?md5=9d463f04d70980ee4ff3847861aae3c5&pid=1-s2.0-S0966636224006131-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Gait & posture\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0966636224006131\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"NEUROSCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gait & posture","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0966636224006131","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"NEUROSCIENCES","Score":null,"Total":0}
The relationship between executed cut angle and speed with lower extremity joint angles during unanticipated side-step cutting in soccer players
Background
Certain movements patterns have been indicated in knee injuries during cutting while running tasks. Differences in the executed cut angle (ECA) could partially account for group differences in joint kinematics previously observed, including sex differences.
Research question
Are there relationships between joint angles with entry speed and ECA during side-step cutting in soccer players?
Methods
This cross-sectional study recruited 21 (10 females) soccer players. Participants completed 45° unanticipated side-step cuts in both directions. Kinematic data were captured with a 12 camera motion capture system with 46 reflective markers placed on the participants. Peak joint angles were determined during the stance phase of the cutting task. Entry speed and ECA were determined from pelvis markers. Hierarchical linear models examined relationships between angles, entry speed, and ECA, after accounting for age, sex, and leg preference. Regression coefficients with 95 % confidence intervals were reported and statistical significance (p<0.05) were examined using the Wald statistic.
Results
The mean ECA (24.6°) was lower than the intended 45° angle. Peak joint angles were significantly related to both ECA and entry speed. Specifically, an increase in ECA by 10° (i.e., sharper cuts) would increase hip internal rotation and ankle plantarflexion by 1.8–2.1°, and decrease hip adduction, knee abduction and ankle eversion by 1.3–2.4°. Faster entry speeds by 0.5 m/s would increase hip flexion, hip internal rotation and knee extension angles by 1.8–3.8°, and decrease knee abduction by 2.6°.
Significance
Studies evaluating cutting while running should consider ECA and entry speed in their design. Potential differences could confound between-group comparisons of joint angles, including when comparing sexes, and impact interpretations of injury risk.
期刊介绍:
Gait & Posture is a vehicle for the publication of up-to-date basic and clinical research on all aspects of locomotion and balance.
The topics covered include: Techniques for the measurement of gait and posture, and the standardization of results presentation; Studies of normal and pathological gait; Treatment of gait and postural abnormalities; Biomechanical and theoretical approaches to gait and posture; Mathematical models of joint and muscle mechanics; Neurological and musculoskeletal function in gait and posture; The evolution of upright posture and bipedal locomotion; Adaptations of carrying loads, walking on uneven surfaces, climbing stairs etc; spinal biomechanics only if they are directly related to gait and/or posture and are of general interest to our readers; The effect of aging and development on gait and posture; Psychological and cultural aspects of gait; Patient education.