Krupková Dominika, Tufano James J, Baláš Jiří
Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic.
Front Sports Act Living. 2024 Dec 12;6:1480205. doi: 10.3389/fspor.2024.1480205. eCollection 2024.
Active recovery (AR) is used during exercise training; however, it is unclear whether the AR should involve the whole body, only the upper extremities, or only the lower extremities when aiming to maintain localized upper body performance. Therefore, this study aimed to evaluate the impact of different AR strategies on repeated intermittent finger flexor performance leading to exhaustion.
A crossover trial involving a familiarization session and three laboratory visits, each including three exhaustive intermittent isometric tests at 60% of finger flexor maximal voluntary contraction separated by 22 min of randomly assigned AR: walking, intermittent hanging, and climbing.
The impulse (Nꞏs) significantly decreased from the first to third trials after walking (-18.4%, = 0.002, = 0.78), climbing (-29.5%, < 0.001, = 1.48), and hanging (-27.2%, < 0.001, = 1.22). In the third trial, the impulse from the intermittent test was significantly higher after walking (21,253 ± 5,650 Nꞏs) than after hanging (18,618 ± 5,174 Nꞏs, = 0.013, = 0.49) and after climbing (18,508 ± 4,435 Nꞏs, = 0.009, = 0.54).
The results show that easy climbing or intermittent isolated forearm contractions should not be used as AR strategies to maintain subsequent performance in comparison to walking, indicating that using the same muscle group for AR should be avoided between exhaustive isometric contractions.
主动恢复（AR）在运动训练中被采用；然而，当旨在维持局部上身表现时，AR是应涉及全身、仅上肢还是仅下肢尚不清楚。因此，本研究旨在评估不同AR策略对导致疲劳的反复间歇性手指屈肌表现的影响。
一项交叉试验，包括一次熟悉训练和三次实验室访视，每次访视包括三次以手指屈肌最大自主收缩的60%进行的力竭性间歇性等长测试，每次测试间隔22分钟的随机分配的AR：步行、间歇性悬垂和攀爬。
步行（-18.4%，P = 0.002，η² = 0.78）、攀爬（-29.5%，P < 0.001，η² = 1.48）和悬垂（-27.2%，P < 0.001，η² = 1.22）后，从第一次试验到第三次试验，冲量（N·s）显著降低。在第三次试验中，间歇性测试的冲量在步行后（21,253 ± 5,650 N·s）显著高于悬垂后（18,618 ± 5,174 N·s，P = 0.013，η² = 0.49）和攀爬后（18,508 ± 4,435 N·s，P = 0.009，η² = 0.54）。
结果表明，与步行相比，轻松攀爬或间歇性孤立的前臂收缩不应作为维持后续表现的AR策略，这表明在力竭性等长收缩之间应避免使用相同肌肉群进行AR。
