Department of Sport, Exercise and Health, University of Basel, Switzerland; and.
Department of Intervention Research in Exercise Training, German Sport University, Cologne, Germany.
J Strength Cond Res. 2021 Aug 1;35(8):2158-2164. doi: 10.1519/JSC.0000000000003112.
Roth, R, Donath, L, Zahner, L, and Faude, O. Acute leg and trunk muscle fatigue differentially affect strength, sprint, agility, and balance in young adults. J Strength Cond Res 35(8): 2158-2164, 2021-How important leg or trunk muscles are for balance and sprint performance is still unexplored. Therefore, we separately fatigued the leg and trunk musculature and examined their contribution to strength, balance, sprint, and agility performance. Twenty-four healthy adults (12 women; age 22.9 [SD: 2.6] years; body mass 59 [10] kg; height 1.65 [0.09] m; and 12 men; age 22.7 [3.0] years; body mass 78 [9] kg; height 1.81 [0.06] m; at least 3 training sessions/week for at least 90 minutes) underwent a leg and a trunk fatigue procedure, each of 20-minute duration and a control condition at rest in a randomized order. Each condition was conducted individually on 3 separate days. Isokinetic leg and trunk strength, as well as static and dynamic balance, sprint, agility, and prone plank endurance, were assessed before and after each fatiguing protocol. Before assessment, a familiarization was conducted. Pairwise magnitude-based inference analyses showed likely relevant deterioration in leg (probability >87%; 0.36 < standardized mean differences [SMDs] < 0.92) and trunk (>88%, 0.28 < SMD < 0.74) fatigue procedures for all motor test parameters compared with the control condition, except for the 20-m sprint after the trunk fatigue procedure. Isokinetic strength testing revealed a large loss of strength in leg fatigue (particularly knee extension, 78%, SMD = 0.24) and trunk fatigue (trunk flexion, 100%, SMD = 1.36). Acute fatigue of leg and trunk muscles decreases performance in relevant measures of strength, balance, sprint, and agility. The impact of leg fatigue compared with trunk fatigue was larger in almost all measurements.
罗斯、多纳特、扎纳、福戴。急性腿部和躯干肌肉疲劳对年轻人的力量、冲刺、敏捷和平衡有不同影响。《力量与 Conditioning 研究》35(8)：2158-2164，2021 年。腿部或躯干肌肉对平衡和冲刺表现的重要性仍未得到探索。因此，我们分别对腿部和躯干肌肉进行疲劳，并检查它们对力量、平衡、冲刺和敏捷表现的贡献。24 名健康成年人（12 名女性；年龄 22.9[标准差：2.6]岁；体重 59[10]kg；身高 1.65[0.09]m；12 名男性；年龄 22.7[3.0]岁；体重 78[9]kg；身高 1.81[0.06]m；每周至少进行 3 次训练，每次至少 90 分钟）分别按随机顺序在休息、腿部疲劳和躯干疲劳 3 种条件下进行 20 分钟的测试。每种条件在 3 个单独的日子进行。在每个疲劳方案前后，评估等速腿部和躯干力量以及静态和动态平衡、冲刺、敏捷和俯撑耐力。在评估前进行了熟悉度测试。基于幅度的配对推理分析显示，与对照条件相比，腿部（概率>87%；0.36<标准化均数差[SMD]<0.92）和躯干疲劳（概率>88%；0.28<SMD<0.74）过程中，所有运动测试参数都有较大的变化，除了躯干疲劳后的 20m 冲刺。等速力量测试显示，腿部疲劳（尤其是膝关节伸展，78%，SMD=0.24）和躯干疲劳（躯干屈曲，100%，SMD=1.36）的力量损失较大。急性腿部和躯干肌肉疲劳会降低相关力量、平衡、冲刺和敏捷测量的表现。与躯干疲劳相比，腿部疲劳的影响在几乎所有测量中都更大。
