Joshi Meesha, Telles Shirley
Swami Vivekananda Yoga Research Foundation, Bangalore, India.
Percept Mot Skills. 2009 Jun;108(3):775-81. doi: 10.2466/PMS.108.3.775-781.
Bilateral hand-grip strength was studied in 21 male volunteers (M age = 25.6 yr., SD = 5.2). All were assessed before and after five practice sessions of 20 min. duration: right-nostril yoga breathing, left-nostril yoga breathing, alternate-nostril yoga breathing, breath awareness, and a no-intervention session. Data were analyzed with analyses of variance and an analysis of variance using the no-breath awareness control condition as a covariate. There were no significant changes. The left-hand-grip strength reduced after left-nostril yoga breathing. However, findings were not considered significant, so methodological issues in yoga research which could contribute to null findings and even mask actual changes were discussed.
对21名男性志愿者（平均年龄=25.6岁，标准差=5.2）的双侧握力进行了研究。在五次时长为20分钟的练习前后对所有人进行了评估：右鼻孔瑜伽呼吸、左鼻孔瑜伽呼吸、交替鼻孔瑜伽呼吸、呼吸意识以及无干预环节。使用方差分析以及以无呼吸意识控制条件作为协变量的方差分析对数据进行了分析。未发现显著变化。左鼻孔瑜伽呼吸后左手握力有所下降。然而，研究结果不被认为具有显著性，因此讨论了瑜伽研究中可能导致无显著结果甚至掩盖实际变化的方法学问题。
