The effect of dosed isometric exercise on the respiratory system parameters change in second grade male students

Abstract

Aim. To study the respiratory system adaptive reactions to dosed isometric load in 9 years old boys during the academic year. Methods. Pulmonary function parameters change at rest and their response to isometric load were measured repeatedly in 38 second grade male students during the academic year (October, February, May). An automated cardiopulmonologic AD-03M complex was used to perform the pulmonary tests. The dosed isometric load was applied using a hand-held dynamometer at 50% from maximal grip strength within a minute. Correlation analysis of the measured parameters was performed. Statistical analysis was performed using Student’s t-test. Results. The comparative analysis of the respiratory system parameters in 9 years old boys during the academic year showed the increase in pulmonary volumes and lung function at rest. Dosed isometric load caused decrease in lung function tests and lung function reserves. An increased reactivity and decreased profitability of pulmonary system reactions was observed in 9 years old boys by the end of the second school year as a response to isometric load. Conclusion. The respiratory system of second grade male students is not well adapted for isometric load leading to its over-functioning at the end of the academic year.

Keywords

respiratory system / isometric load / pulmonary function tests / adaptive reactions / younger school age

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RIGHTS & PERMISSIONS

Zayneev M.M., Biktemirova R.G., Krylova A.V., Martyanov O.P., Zefirov T.L.