Ripley Nicholas J, Barber Ritchie, Fahey Jack T, Comfort Paul
School of Health and Society, University of Salford, Salford, United Kingdom ; and.
School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia.
J Strength Cond Res. 2024 Dec 1;38(12):2074-2078. doi: 10.1519/JSC.0000000000004911. Epub 2024 Aug 14.
Ripley, NJ, Barber, R, Fahey, JT, and Comfort, P. Early versus late rapid force production during single-joint isometric hamstring assessment using force plates. J Strength Cond Res 38(12): 2074-2078, 2024-The aim of this study was to assess differences in time-matched early versus late rapid force (RF) development in female soccer players in the 90-90 isometric hamstring assessment. Twenty-one elite female soccer players (age: 20.7 ± 4.7 years; height: 168.2 ± 5.5 cm; body mass: 62.8 ± 7.0 kg), with no recent (>6 months) history of hamstring strain injury, volunteered to participate in the study. Following a standardized warm-up, each subject performed 3 maximal isometric unilateral hamstring contractions, with their heel resting on a force plate, elevated on a box, to ensure that their hips and knees were at 90°. Data were analyzed to determine peak force, early RF (ERF) 0-100 milliseconds and late RF (LRF) 100-200 milliseconds. Significant and large differences were observed in the percentage of peak force achieved between ERF (52.85 ± 11.53%; 54.99 ± 9.80%) and LRF (15.82 ± 5.58%; 15.25 ± 3.91%) for the left and right limbs, respectively ( p < 0.001, g = 2.13-3.06). The large differences between ERF and LRF can be used by practitioners to streamline performance assessment, which in turn will allow practitioners to act upon data collected more effectively. Additionally, regular monitoring ERF production could inform practitioners of any interventions that maybe required, such as reduction of load or introduction of specific recovery modalities and during return to play protocols.
里普利、新泽西州、巴伯、R、费伊、JT和康福特、P。在使用测力板进行单关节等长绳肌评估时，早期与晚期快速力量产生的比较。《力量与体能研究杂志》38(12): 2074 - 2078，2024年。本研究的目的是评估在90 - 90等长绳肌评估中，女性足球运动员在时间匹配的早期与晚期快速力量（RF）发展方面的差异。21名精英女性足球运动员（年龄：20.7±4.7岁；身高：168.2±5.5厘米；体重：62.8±7.0千克），近期（>6个月）无绳肌拉伤病史，自愿参与本研究。在进行标准化热身之后，每个受试者进行3次最大等长单侧绳肌收缩，其脚跟置于测力板上，测力板放置在一个箱子上抬高，以确保其髋部和膝盖呈90°。对数据进行分析以确定峰值力量、0 - 100毫秒的早期RF（ERF）和100 - 200毫秒的晚期RF（LRF）。左右肢体在ERF（52.85±11.53%；54.99±9.80%）和LRF（15.82±5.58%；15.25±3.91%）之间达到的峰值力量百分比分别观察到显著且较大的差异（p < 0.001，g = 2.13 - 3.06）。ERF和LRF之间的巨大差异可供从业者简化性能评估，这反过来将使从业者能够更有效地根据收集到的数据采取行动。此外，定期监测ERF产生情况可以告知从业者可能需要的任何干预措施，例如减少负荷或引入特定的恢复方式以及在重返比赛方案期间。
