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|Type:||Artigo de periódico|
|Title:||Respiratory pattern changes in elderly yoga practitioners|
|Abstract:||The purpose of this research was to study yoga induced thoracoabdominal motion pattern changes during breathing in elderly female subjects. A group of 11 elderly volunteers (mean age: 66.7 +/- 6.4yrs) who had been practising yoga (YG) regularly for over 3yrs was compared to a control group (CG) of 11 non-sedentary volunteers (mean age: 65.7 +/- 7.0yrs). Each subject had 14 markers fixed directly to the skin of the anterior trunk surface and performed twelve vital capacity (VC) manoeuvres in an upright position. A kinematical analysis system was used to measure the trajectory of these markers. Bivariate interpolation function and smooth surface fittings for irregularly distributed data were applied to the set of reconstructed points and thus accurate representation of the trunk surface was obtained as a function of time. Total and partial areas of the surface and a temporal evolution of these measures were calculated. The correlation coefficients for the thorax area (TA) and the abdomen area (AA) of the anterior part of the trunk were used as measures related to the subject's respiratory pattern. No significant differences (p>0.05) were found regarding age, height, weight, mean TA and mean AA in the YG and CG. Highly significant differences were obtained (p<0.001) with regard to the mean values of YG and CG (in parenthesis), breathing frequency, root mean square deviation of TA and AA and in the z-transformed correlation coefficient used to measure the respiratory patterns. The results indicate that yoga techniques may lead to the formation of specific respiratory patterns as well as to reduced breathing frequency and increased breathing amplitude.|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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