Wang-Price Sharon, Almadan Mohammad, Stoddard Carissa, Moore Dustin
School of Physical Therapy, Texas Woman's University, Dallas, TX, USA.
Int J Exerc Sci. 2017 Mar 1;10(2):213-224. doi: 10.70252/UXBX8057. eCollection 2017.
Literature has not shown the minimum time required to recover from muscle fatigue after a prolonged trunk isometric contraction. The purpose of this study was to determine if the lumbar multifidus (LM) and gluteus maximus (GM) muscles would recover from fatigue after three different rest periods following performance of a back extension endurance test. Endurance time and electromyographic (EMG) activity of bilateral LM and GM muscles were collected from 12 healthy adults during a modified Biering-Sørensen test. On three separate visits, each participant performed two modified Biering-Sørensen tests, one before and one after a rest period (3, 6 or 9 min). For each endurance test, endurance time was measured and both mean and median EMG frequency fatigue rates were calculated. The results showed a significantly reduced endurance time and normalized mean frequency fatigue rates on the second modified Biering-Sørensen endurance test regardless of the rest periods (3, 6, and 9 min). This suggests that adequate rest should be considered for fatigue recovery when designing a back and hip endurance exercise program, and that future studies should investigate a rest time longer than 9 minutes for fatigue recovery following a modified Biering-Sørensen endurance test.
文献中尚未表明长时间躯干等长收缩后从肌肉疲劳中恢复所需的最短时间。本研究的目的是确定在进行背部伸展耐力测试后，经过三种不同的休息时间，腰多裂肌（LM）和臀大肌（GM）是否会从疲劳中恢复。在改良的比林-索伦森测试中，收集了12名健康成年人双侧LM和GM肌肉的耐力时间和肌电图（EMG）活动。在三次单独的就诊中，每位参与者进行两次改良的比林-索伦森测试，一次在休息期（3、6或9分钟）之前，一次在休息期之后。对于每次耐力测试，测量耐力时间，并计算平均和中位数EMG频率疲劳率。结果显示，无论休息时间（3、6和9分钟）如何，在第二次改良的比林-索伦森耐力测试中，耐力时间显著缩短，平均频率疲劳率恢复正常。这表明在设计背部和臀部耐力锻炼计划时，应考虑给予足够的休息时间以促进疲劳恢复，并且未来的研究应该调查在改良的比林-索伦森耐力测试后，休息时间超过9分钟对疲劳恢复的影响。
