Wael Daab, Mohamed Amine Bouzid, Firas Zghal, Marie Gernigon, Haithem Rebai, Abd-Elbasset Abaïdia, George P Nassis
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引用次数: 0
Abstract
Objectives: This study investigated the effect of ischemic preconditioning on neuromuscular fatigue etiology and physical performance during simulated soccer match play.
Design: The study followed a crossover randomized, placebo-controlled trial design.
Methods: Fourteen semi-professional players completed the Loughborough Intermittent Shuttle Test preceded by either three 5 min periods of bilateral cuff inflation to 220 mm Hg (ischemic preconditioning) or to 20 mm Hg (placebo), interspersed with 5-min periods of reperfusion. Neuromuscular function, including maximal voluntary contraction, potentiated twitch, and voluntary activation, was assessed at baseline, halftime, and full time. Sprint performance, perceived exertion, and muscle soreness were evaluated through the Loughborough Intermittent Shuttle Test protocol.
Results: Ischemic preconditioning significantly attenuated the decline in maximal voluntary contraction at halftime (p < 0.01, d = 0.7) and full time (p < 0.01, d = 1.3) compared to placebo. Voluntary activation was better maintained with ischemic preconditioning at halftime (-8 % in placebo vs -4 % in ischemic preconditioning, p < 0.01, d = 1.4) and full time (-11 % in placebo vs -6 % in ischemic preconditioning, p < 0.01, d = 1.6). Sprint performance was significantly preserved in ischemic preconditioning during the third (p = 0.01, d = 0.55) and sixth sets (p < 0.01, d = 1.03). Likewise, ischemic preconditioning reduced muscle soreness scores at full time (p < 0.01, d = 1.4) compared to placebo.
Conclusions: These findings suggest that ischemic preconditioning effectively attenuated neuromuscular fatigue development, likely via central factors, and preserved high-intensity performance during a simulated soccer match play.
目的:研究缺血性预处理对模拟足球比赛中神经肌肉疲劳的病因学和体能表现的影响。设计:本研究采用交叉随机、安慰剂对照试验设计。方法:14名半职业运动员完成了拉夫堡间歇穿梭测试,在此之前进行了三次5 分钟的双侧袖带膨胀至220 mm Hg(缺血预处理)或20 mm Hg(安慰剂),穿插5分钟的再灌注。神经肌肉功能,包括最大自主收缩、增强抽搐和自主激活,在基线、中场和全时进行评估。通过拉夫堡间歇穿梭测试方案评估短跑表现、感知用力和肌肉酸痛。结论:这些发现表明,缺血预处理可能通过中枢因素有效地减弱了神经肌肉疲劳的发展,并在模拟足球比赛中保持了高强度的表现。
期刊介绍:
The Journal of Science and Medicine in Sport is the official journal of Sports Medicine Australia (SMA) and is an an international refereed research publication covering all aspects of sport science and medicine.
The Journal considers for publication Original research and Review papers in the sub-disciplines relating generally to the broad sports medicine and sports science fields: sports medicine, sports injury (including injury epidemiology and injury prevention), physiotherapy, podiatry, physical activity and health, sports science, biomechanics, exercise physiology, motor control and learning, sport and exercise psychology, sports nutrition, public health (as relevant to sport and exercise), and rehabilitation and injury management. Manuscripts with an interdisciplinary perspective with specific applications to sport and exercise and its interaction with health will also be considered.