摘要目的 观察右前臂等长旋转训练能否产生前臂肌肉力量的交叉迁移.方法 将健康女青年志愿者20例按随机数字表法分成训练组和对照组,每组10例.训练组进行6周右前臂等长旋转训练,左前臂不训练,对照组不进行任何训练.2组受试者均于训练前和训练6周后(训练后)测试双侧前臂旋前峰力矩(PPT)和旋后峰力矩(SPT).结果 训练前,2组受试者双侧的PPT和SPT组间比较,差异均无统计学意义(P＞0.05);训练后,训练组右侧的PPT和SPT分别与组内训练前和对照组训练后比较,差异均有统计学意义(P＜0.05),且训练组左侧的PPT和SPT分别为(6.8±0.9)Nm和(4.6±1.0)Nm,与组内训练前和对照组训练后比较,差异亦均有统计学意义(P＜0.05).结论 右前臂等长旋转训练能明显提高训练侧和未训练侧前臂肌肉旋转力量,产生良好的交叉迁移.

abstractsObjective To investigate the extent of cross-education between the pronation and supination muscles of the right and left forearms after unilateral isometric training.Methods Twenty healthy young girls were randomized into a training group and a control group using a random number table.The training group underwent isometric training of their right forearms for six weeks,while the control group continued ordinary life without exercises.Pronation peak torque (PPT) and supination peak torque (SPT) were assessed before and after the training for both groups.Results The differences in PPT or SPT between the training group and the control group were not significant before the training program.When the training had been completed,however,the average PPT and SPT on right side of those trained of course had increased significantly compared to before training or to the control group.More significantly,the average PPT and SPT on the left side in the training group were also significantly better than before training or in the control group after training.Conclusion Unilateral isometric training of the forearm pronation and supination muscles for six weeks can significantly increase muscle strength bilaterally,indicating good cross-education.