of wakefulness during the night (58 out of 69), and (iii) reduced number of hours slept each night (42 out of 69).

The data of baseline, three and six months of all three groups were found to be not normally distributed based on the Kolmogorov-Smirnov test. In the Yoga group the time taken to fall asleep was reduced significantly at three (P<0.05) and six months (P<0.01), and duration of sleep each night increased significantly at six months (P<0.05). Other groups showed no significant change (Table II).

The repeated measures ANOVA showed that there was a significant interaction between the factors (Assessments and Groups; P<0.05) for the ‘time taken to fall asleep’, while other variables showed no significant difference (Table III).

The paired ‘t’ test showed that there was a significant decrease in the time taken to fall asleep in the Yoga group at both three months (P<0.05) and six months (P<0.01) when compared with the baseline values. Also, there was a significant increase in the total number of hours slept each night in the Yoga group for the comparisons made between the values at six months with (i) those at baseline (P<0.05) and (ii) at three months (P<0.05).

The McNemar test for the “feeling of being rested in the morning” showed that there was a significant increase in the ‘feeling of being rested in the morning’ in the Yoga group at six months (N=18, P<0.05) compared with the baseline values, while other groups showed no significant change.