Yoga cannot be considered a routine intervention for patients with asthma


Although yoga is frequently used by patients with asthma, its efficacy in alleviating asthma remains unclear.
A study has systematically assessed the available data on efficacy and safety of yoga in alleviating asthma.

Fourteen randomized controlled trials with 824 patients were included.

Evidence for effects of yoga compared with usual care was found for asthma control ( risk ratio, RR=10.64; 95% CI, 1.98 to 57.19; P = 0.006 ), asthma symptoms ( standardized mean difference, SMD: −0.37; 95% CI, −0.55 to −0.19; P less than 0.001 ), quality of life ( SMD=0.86; 95% CI, 0.39 to 1.33; P less than 0.001 ), peak expiratory flow rate ( SMD=0.49; 95% CI, 0.32 to 0.67; P less than 0.001 ), and ratio of forced expiratory volume in 1 second to forced vital capacity ( SMD=0.50; 95% CI, 0.24 to 0.75; P less than 0.001 ).

Evidence for effects of yoga compared with for psychological interventions was found for quality of life ( SMD=0.61; 95% CI, 0.22 to 0.99; P = 0.002 ) and peak expiratory flow rate ( SMD=2.87; 95% CI, 0.14 to 5.60; P = 0.04 ).

No evidence for effects of yoga compared with sham yoga or breathing exercises was revealed. No effect was robust against all potential sources of bias.

Yoga was not associated with serious adverse events.

In conclusion, yoga cannot be considered a routine intervention for asthmatic patients at this point. It can be considered an ancillary intervention or an alternative to breathing exercises for asthma patients interested in complementary interventions. ( Xagena )

Cramer H et al, Ann Allergy Asthma Immunol 2014; Published online ahead of print

XagenaMedicine_2014



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