Jihong Qiu, Tianzhi Jiang, Michael Tim-Yun Ong, Xin He, Chi-Yin Choi, Sai-Chuen Fu, Daniel T P Fong, Patrick Shu-Hang Yung
{"title":"前十字韧带损伤后早期会出现双侧股四头肌神经肌肉功能障碍。","authors":"Jihong Qiu, Tianzhi Jiang, Michael Tim-Yun Ong, Xin He, Chi-Yin Choi, Sai-Chuen Fu, Daniel T P Fong, Patrick Shu-Hang Yung","doi":"10.1080/15438627.2022.2079986","DOIUrl":null,"url":null,"abstract":"<p><p>The study aimed to investigate the impairments in quadriceps neuromuscular function, including strength, rate of torque development (RTD) and activation failure (QAF) early after an ACL injury. A cross-sectional study was conducted. Thirty physically active patients with a primary ACL injury within three months, aged 18 to 40 years old, and who were scheduled for ACL reconstruction were included. Thirty matched healthy controls were also recruited. All the outcomes were measured on an isokinetic dynamometer with knee flexion at 45°. Quadriceps strength was measured by maximal voluntary isometric contractions (MVIC). Early (RTD<sub>0-50</sub>) and late (RTD<sub>100-200</sub>) phases of RTD were retrieved from the MVIC test from 0 to 50 ms and 100-200 ms, respectively. QAF was quantified by the central activation ratio (CAR) measured by superimposed burst technique. The results of Mann-Whitney U test showed that compared with the healthy limbs, the injured limbs of the ACL group showed lower quadriceps strength (P < 0.001), RTD<sub>0-50</sub> (P < 0.001) and RTD<sub>100-200</sub> (P < 0.001); the uninjured limbs showed lower quadriceps strength (P = 0.009), RTD<sub>0-50</sub> (P = 0.006) as well as greater QAF (P = 0.010). To conclude, bilateral quadriceps suffered from neuromuscular impairments early after an ACL injury.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Bilateral impairments of quadriceps neuromuscular function occur early after anterior cruciate ligament injury.\",\"authors\":\"Jihong Qiu, Tianzhi Jiang, Michael Tim-Yun Ong, Xin He, Chi-Yin Choi, Sai-Chuen Fu, Daniel T P Fong, Patrick Shu-Hang Yung\",\"doi\":\"10.1080/15438627.2022.2079986\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The study aimed to investigate the impairments in quadriceps neuromuscular function, including strength, rate of torque development (RTD) and activation failure (QAF) early after an ACL injury. A cross-sectional study was conducted. Thirty physically active patients with a primary ACL injury within three months, aged 18 to 40 years old, and who were scheduled for ACL reconstruction were included. Thirty matched healthy controls were also recruited. All the outcomes were measured on an isokinetic dynamometer with knee flexion at 45°. Quadriceps strength was measured by maximal voluntary isometric contractions (MVIC). Early (RTD<sub>0-50</sub>) and late (RTD<sub>100-200</sub>) phases of RTD were retrieved from the MVIC test from 0 to 50 ms and 100-200 ms, respectively. QAF was quantified by the central activation ratio (CAR) measured by superimposed burst technique. The results of Mann-Whitney U test showed that compared with the healthy limbs, the injured limbs of the ACL group showed lower quadriceps strength (P < 0.001), RTD<sub>0-50</sub> (P < 0.001) and RTD<sub>100-200</sub> (P < 0.001); the uninjured limbs showed lower quadriceps strength (P = 0.009), RTD<sub>0-50</sub> (P = 0.006) as well as greater QAF (P = 0.010). To conclude, bilateral quadriceps suffered from neuromuscular impairments early after an ACL injury.</p>\",\"PeriodicalId\":20958,\"journal\":{\"name\":\"Research in Sports Medicine\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Research in Sports Medicine\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1080/15438627.2022.2079986\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2022/5/29 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"SPORT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research in Sports Medicine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1080/15438627.2022.2079986","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2022/5/29 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"SPORT SCIENCES","Score":null,"Total":0}
Bilateral impairments of quadriceps neuromuscular function occur early after anterior cruciate ligament injury.
The study aimed to investigate the impairments in quadriceps neuromuscular function, including strength, rate of torque development (RTD) and activation failure (QAF) early after an ACL injury. A cross-sectional study was conducted. Thirty physically active patients with a primary ACL injury within three months, aged 18 to 40 years old, and who were scheduled for ACL reconstruction were included. Thirty matched healthy controls were also recruited. All the outcomes were measured on an isokinetic dynamometer with knee flexion at 45°. Quadriceps strength was measured by maximal voluntary isometric contractions (MVIC). Early (RTD0-50) and late (RTD100-200) phases of RTD were retrieved from the MVIC test from 0 to 50 ms and 100-200 ms, respectively. QAF was quantified by the central activation ratio (CAR) measured by superimposed burst technique. The results of Mann-Whitney U test showed that compared with the healthy limbs, the injured limbs of the ACL group showed lower quadriceps strength (P < 0.001), RTD0-50 (P < 0.001) and RTD100-200 (P < 0.001); the uninjured limbs showed lower quadriceps strength (P = 0.009), RTD0-50 (P = 0.006) as well as greater QAF (P = 0.010). To conclude, bilateral quadriceps suffered from neuromuscular impairments early after an ACL injury.
期刊介绍:
Research in Sports Medicine is a broad journal that aims to bridge the gap between all professionals in the fields of sports medicine. The journal serves an international audience and is of interest to professionals worldwide. The journal covers major aspects of sports medicine and sports science - prevention, management, and rehabilitation of sports, exercise and physical activity related injuries. The journal publishes original research utilizing a wide range of techniques and approaches, reviews, commentaries and short communications.