Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Post traumatic stress symptoms and heart rate variability in Bihar flood survivors following yoga: a randomized controlled study | Telles et al. BMC Psychiatry 2010 10 18 http 1471-244X 10 18 BMC Psychiatry RESEARCH ARTICLE Open Access Post traumatic stress symptoms and heart rate variability in Bihar flood survivors following yoga a randomized controlled study Shirley Telles Nilkamal Singh Meesha Joshi Acharya Balkrishna Abstract Background An earlier study showed that a week of yoga practice was useful in stress management after a natural calamity. Due to heavy rain and a rift on the banks of the Kosi river in the state of Bihar in north India there were floods with loss of life and property. A week of yoga practice was given to the survivors a month after the event and the effect was assessed. Methods Twenty-two volunteers group average age years all of them were males were randomly assigned to two groups yoga and a non-yoga wait-list control group. The yoga group practiced yoga for an hour daily while the control group continued with their routine activities. Both groups heart rate variability breath rate and four symptoms of emotional distress using visual analog scales were assessed on the first and eighth day of the program. Results There was a significant decrease in sadness in the yoga group p paired t-test post data compared to pre and an increase in anxiety in the control group p paired t-test post data compared to pre . Conclusions A week of yoga can reduce feelings of sadness and possibly prevent an increase in anxiety in flood survivors a month after the calamity. Trial Registration Clinical Trials Registry of India CTRI 2009 091 000285 Background In August 2008 due to preceding heavy monsoon rains there was a breach in the embankments of the Kosi River near the Indo-Nepal border 1 . The breach caused loss of life and property in the north Indian state of Bihar affecting more than million lives. A month after the event most of the survivors were still housed in temporary shelters as the waters had not receded. As the population .