Effects of Hatha yoga and Omkar meditation on cardiorespiratory performance, psychologic profile, and melatonin secretion
Effects of Hatha yoga and Omkar meditation on cardiorespiratory performance, psychologic profile, and melatonin secretion
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DOI：
10.1089/107555304323062257
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发表时间：
2004-04-01
影响因子：
2.6
通讯作者：
Sawhney, RC
中科院分区：
文献类型：
--
作者：
Harinath, K;Malhotra, AS;Sawhney, RC
目的：评估哈他瑜伽和 Omkar 冥想对心肺功能、心理状况和褪黑激素分泌的影响。 对象和方法：30 名 25-35 岁健康男性自愿参加本研究。他们被随机分为两组，每组 15 人。第 1 组受试者作为对照组，每天早上进行 40 分钟的身体灵活性锻炼，慢跑 20 分钟，晚上进行 60 分钟的游戏，持续 3 个月。第 2 组受试者在早上练习选定的瑜伽体式（姿势）45 分钟，调息 15 分钟，而在晚上，这些受试者每天练习 15 分钟准备瑜伽姿势，调息 15 分钟，冥想 30 分钟，持续 3 个月。瑜伽练习前后3个月测量体位耐受力、心率、血压、呼吸频率、动态肺功能（如用力肺活量、1秒用力呼气量、用力呼气量百分比、呼气峰值流速和最大通气量）和心理状况。在不同的时间间隔连续抽取血液样本，以研究这些瑜伽练习和 Omkar 冥想对褪黑激素水平的影响。结果：3 个月的瑜伽练习改善了心肺功能和心理状况。经过三个月的瑜伽练习后，血浆褪黑激素也有所增加。收缩压、舒张压、平均动脉压和体位耐受力与血浆褪黑激素没有显着相关性。然而，瑜伽组的夜间最大褪黑激素水平与幸福感得分显着相关（r = 0.71，p < 0.05）。结论：这些观察结果表明，瑜伽练习可以作为心理生理刺激来增加褪黑激素的内源性分泌，进而可能改善幸福感。
Objectives: To evaluate effects of Hatha yoga and Omkar meditation on cardiorespiratory performance, psychologic profile, and melatonin secretion.Subjects and methods: Thirty healthy men in the age group of 25-35 years volunteered for the study. They were randomly divided in two groups of 15 each. Group 1 subjects served as controls and performed body flexibility exercises for 40 minutes and slow running for 20 minutes during morning hours and played games for 60 minutes during evening hours daily for 3 months. Group 2 subjects practiced selected yogic asanas (postures) for 45 minutes and pranayama for 15 minutes during the morning, whereas during the evening hours these subjects performed preparatory yogic postures for 15 minutes, pranayama for 15 minutes, and meditation for 30 minutes daily, for 3 months. Orthostatic tolerance, heart rate, blood pressure, respiratory rate, dynamic lung function (such as forced vital capacity, forced expiratory volume in 1 second, forced expiratory volume percentage, peak expiratory flow rate, and maximum voluntary ventilation), and psychologic profile were measured before and after 3 months of yogic practices. Serial blood samples were drawn at various time intervals to study effects of these yogic practices and Omkar meditation on melatonin levels.Results: Yogic practices for 3 months resulted in an improvement in cardiorespiratory performance and psychologic profile. The plasma melatonin also showed an increase after three months of yogic practices. The systolic blood pressure, diastolic blood pressure, mean arterial pressure, and orthostatic tolerance did not show any significant correlation with plasma melatonin. However, the maximum night time melatonin levels in yoga group showed a significant correlation (r = 0.71, p < 0.05) with well-being score.Conclusion: These observations suggest that yogic practices can be used as psychophysiologic stimuli to increase endogenous secretion of melatonin, which, in turn, might be responsible for improved sense of well-being.