不同运动模式下Flexi-bar训练对躯干稳定性肌肉的影响

目的 比较不同运动模式下Flexi-bar训练对躯干稳定性肌肉的影响。方法 2020年6月至2021年1月,北京博爱医院健康男性21例,随机顺序分别用双手握持不振荡(休息)、双手前侧振荡(前侧)、非利手前侧振荡(非利手)、利手前侧振荡(利手)、双手上侧振荡(上侧)、双手下侧振荡(下侧)、双手后侧振荡(后侧)等7种方式振荡Flexi-bar,在每组运动方式下,采用表面肌电图采集上斜方肌、中斜方肌、下斜方肌、背阔肌、多裂肌的肌电图信号,记录平均电压。结果 前侧时,多裂肌平均电压最高(F=42.362, P<0.001);上侧时,上斜方肌和下斜方肌平均电压最高(F > 10.935, P<0.001);后侧时,背阔肌平均电压最高(F=35.243, P<0.001);非利手时,同侧中斜方肌平均电压最高(F=40.400, P<0.001)。结论 Flexi-bar训练能有效激活躯干稳定性肌肉,针对不同肌肉采用不同的运动姿势可取得最佳效果。

Effect of Flexi-bar training in different exercise patterns on trunk stability muscles

Objective To compare the effects of Flexi-bar training in different exercise patterns on trunk stability muscles.Methods From June, 2020 to January, 2021, 21 healthy men in Beijing Bo'ai Hospital finished Flexi-bar exercise in seven patterns in random order, namely no vibration, two hands-front vibration, dominant hand-front vibration, non dominant hand-front vibration, two hands-up vibration, two hands-down vibration and two hands-back vibration. The average voltage of electromyography of upper trapezius, middle trapezius, lower trapezius, latissimus dorsi and lumbar multifidus were recorded with surface electromyography during seven kinds of Flexi-bar exercise.Results The average voltage of lumbar multifidus was the most as two hands-front vibration (F=42.362, P<0.001); however, it was the most for upper trapezius and lower trapezius as two hands-up vibration (F > 10.935, P<0.001), it was the most for latissimus dorsi as two hands-back vibration (F=35.243, P<0.001), and it was the most for ipsilateral middle trapezius as non dominant hand-front vibration (F=40.400, P<0.001).Conclusion Flexi-bar training can effectively activate the contraction of trunk stability muscles, and it can be optimized in targeted patterns.