Pranayama increases grip strength without lateralized effects
The Indian Journal of Physiology Pharmacology.
Raghuraj P, Nagarathna R, Nagendra HR, Telles S.
Vivekananda Kendra Yoga Research Foundation, Bangalore.
The present study was conducted to determine whether breathing through a particular nostril has a lateralized effect on hand grip strength. 130 right hand dominant, school children between 11 and 18 yrs of age were randomly assigned to 5 groups. Each group had a specific yoga practice in addition to the regular program for a 10 day yoga camp.
The practices were:
(3) alternate- nostril breathing
(4) breath awareness and
(5) practice of mudras. Hand grip strength of both hands was assessed initially and at the end of 10 days for all 5 groups. The right-, left- and alternate-nostril breathing groups had a significant increase in grip strength of both hands, ranging from 4.1% to 6.5%, at the end of the camp though without any lateralization effect. The breath awareness and mudra groups showed no change. Hence the present results suggest that yoga breathing through a particular nostril, or through alternate nostrils increases hand grip strength of both hands without lateralization.