an increasing trendp = 0.057
was significantly increased at 3 and 4 weeks (18.0 ± 8.3% and 17.6 ± 8.5%, respectively) compared to that during pre-intervention (11.7 ± 7.3%) ( p = 0.019 and p = 0.035, respectively), and further, an increasing trend was observed at 2 week and post-intervention (17.3 ± 7.0% and 17.1 ± 7.6%, respectively) compared to pre-intervention ( p = 0.057 and p = 0.073, respectively).