Results
Figure 1 shows the flow of participants through the study.
From August 2009 to March 2010, participants were randomly
assigned to the intervention group (83) and to the
control group (40). Twenty-five (25) participants were excluded
by the exclusion criteria, and 98 eligible participants
completed the questionnaire at baseline. At 2 weeks, a control
participant was injured during working hours. Replies
were not obtained from 12 intervention participants and 3
control participants. At 4 weeks, a control participant caught
a cold. Seven intervention participants and 2 control participants
did not reply. Data were received from 82 (84%)
participants at the end of the 2-week intervention, and 68
(69%) participants completed the study. No adverse events
were occurred through this study.
Table 2 shows the characteristics of the 98 participants.
The mean age was 33.6 years; 90% were nursery school
teachers and 72% were woman with regular menses; the
mean BMI was 21.1. On average, the participants had 10
years experience in teaching. The baseline characteristics
were reasonably well balanced between the groups, except
that the yoga group contained more university graduates
and women with regular menses.
On average, the participants of the yoga group practiced
7.8 times every 2 weeks and 6.7 times thereafter. A signifi-
cant correlation was observed in the number of yoga prac