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. 2012;2012:408727.
doi: 10.1155/2012/408727. Epub 2012 Sep 25.

Iyengar Yoga for Distressed Women: A 3-armed Randomized Controlled Trial

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Free PMC article

Iyengar Yoga for Distressed Women: A 3-armed Randomized Controlled Trial

Andreas Michalsen et al. Evid Based Complement Alternat Med. .
Free PMC article

Abstract

Distress is an increasing public health problem. We aimed to investigate the effects of an Iyengar yoga program on perceived stress and psychological outcomes in distressed women and evaluated a potential dose-effect relationship. Seventy-two female distressed subjects were included into a 3-armed randomized controlled trial and allocated to yoga group 1 (n = 24) with twelve 90 min sessions over 3 months, yoga group 2 (n = 24) with 24 sessions over 3 months, or a waiting list control group (n = 24). The primary outcome was stress perception, measured by Cohen Stress Scale; secondary outcomes included state trait anxiety, depression, psychological and physical quality of life (QOL), profile of Mood States, well being, and bodily complaints. After three months, women in the yoga groups showed significant improvements in perceived stress (P = 0.003), state trait anxiety (P = 0.021 and P = 0.003), depression (P = 0.008), psychological QOL (P = 0.012), mood states being (P = 0.007), and bodily complaints well(P = 0.012) when compared to controls. Both yoga programs were similarly effective for these outcomes; however, compliance was better in the group with fewer sessions (yoga group 1). Dose effects were seen only in the analysis of group-independent effects for back pain, anxiety, and depression. These findings suggest that Iyengar yoga effectively reduces distress and improves related psychological and physical outcomes. Furthermore, attending twice-weekly yoga classes was not superior to once-weekly classes, as a result of limited compliance in the twice-weekly group.

Figures

Figure 1
Figure 1
Trial flow chart.
Figure 2
Figure 2
Perceived stress. Mean (±SD) CPSS score on study entry and at three months in the yoga and control groups. Significant between-group treatment effect of −6.7 (−10.9; −2.5) (adj., 95% CI), P = 0.002 in yoga group 1 (versus control) and −4.7 (−9.2; −0.3), P = 0.036 (Table 2) in yoga group 2 (versus control). The pooled group difference reached −5.7 (−9.5; −2.0), P = 0.003 (versus control).

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