Medicine and science in sports and exercise · 2025
Influence of Running Speed and Time Postoperatively on Lower Extremity Work in Collegiate Athletes after Anterior Cruciate Ligament Reconstruction.
СтатьяПоддержка NIH: внешняя программаНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Knurr Keith A, Cobian Daniel G, Kliethermes Stephanie A, Joachim Mikel R, Heiderscheit Bryan C
Аннотация
PURPOSE: Following anterior cruciate ligament reconstruction (ACLR), individuals present with significant and persistent deficits in surgical knee biomechanics during running. Little is known regarding the role of the hip and ankle in compensating for these knee-specific deficits. The purpose of this study was to characterize how limb (surgical and nonsurgical), time postoperatively (3.5-7 months [EARLY], 8-13 months [LATE]), and running speed influence lower extremity joint-specific and total work during running post-ACLR.
METHODS: Fifty-six Division I collegiate athletes post-ACLR (EARLY: n = 41; LATE: n = 42; both: n = 27) completed running analyses at 2.68, 2.95, 3.35, 3.80, and 4.47 m·s -1 or up to their maximum comfortable speed. Linear mixed effects models assessed the influence of limb, speed, time post-ACLR, and their interactions on hip, knee, ankle, and total negative work and positive work.
RESULTS: Surgical limb hip positive work was greater (0.044 J·kg -1 [95% CI = 0.015-0.074], P < 0.001) than the nonsurgical limb EARLY. Surgical limb ankle negative (-0.054 J·kg -1 [-0.093 to -0.015], P = 0.003) and positive work (-0.115 J·kg -1 [-0.168 to -0.063], P < 0.001) were less than the nonsurgical limb EARLY. Surgical limb knee negative (EARLY: -0.339 J·kg -1 [-0.382 to -0.296], P < 0.001; LATE: -0.222 J·kg -1 [-0.265 to -0.180], P < 0.001) and positive work (EARLY: -0.214 J·kg -1 [-0.246 to -0.182], P < 0.001; LATE: -0.142 J·kg -1 [-0.174 to -0.110], P < 0.001) were less than the nonsurgical limb. Total negative work and positive work followed the same pattern as the knee.
CONCLUSIONS: Athletes post-ACLR exhibited greater hip positive work and lesser ankle positive work and negative work during running of the surgical limb EARLY, which resolved LATE. Both knee and total negative work and positive work of the surgical limb were substantially less than the nonsurgical limb, which improved from EARLY to LATE, but between-limb asymmetries remained.
METHODS: Fifty-six Division I collegiate athletes post-ACLR (EARLY: n = 41; LATE: n = 42; both: n = 27) completed running analyses at 2.68, 2.95, 3.35, 3.80, and 4.47 m·s -1 or up to their maximum comfortable speed. Linear mixed effects models assessed the influence of limb, speed, time post-ACLR, and their interactions on hip, knee, ankle, and total negative work and positive work.
RESULTS: Surgical limb hip positive work was greater (0.044 J·kg -1 [95% CI = 0.015-0.074], P < 0.001) than the nonsurgical limb EARLY. Surgical limb ankle negative (-0.054 J·kg -1 [-0.093 to -0.015], P = 0.003) and positive work (-0.115 J·kg -1 [-0.168 to -0.063], P < 0.001) were less than the nonsurgical limb EARLY. Surgical limb knee negative (EARLY: -0.339 J·kg -1 [-0.382 to -0.296], P < 0.001; LATE: -0.222 J·kg -1 [-0.265 to -0.180], P < 0.001) and positive work (EARLY: -0.214 J·kg -1 [-0.246 to -0.182], P < 0.001; LATE: -0.142 J·kg -1 [-0.174 to -0.110], P < 0.001) were less than the nonsurgical limb. Total negative work and positive work followed the same pattern as the knee.
CONCLUSIONS: Athletes post-ACLR exhibited greater hip positive work and lesser ankle positive work and negative work during running of the surgical limb EARLY, which resolved LATE. Both knee and total negative work and positive work of the surgical limb were substantially less than the nonsurgical limb, which improved from EARLY to LATE, but between-limb asymmetries remained.