Open AccessMUSCLE OXYGENATION DURING EXERCISE IN PHYSICALLY ACTIVE AND OVERWEIGHT 6–19-YEAR-OLD CHILDREN
Author(s) -
Šidlauskaitė Vaida,
Birutė Zacharienė,
Arvydas Stasiulis
Publication year - 2017
Publication title -
baltic journal of sport and health sciences
Language(s) - English
Resource type - Journals
eISSN - 2538-8347
pISSN - 2351-6496
DOI - 10.33607/bjshs.v4i107.38
Subject(s) - overweight , oxygenation , medicine , physical therapy , heart rate , body weight , cardiology , anesthesia , obesity , blood pressure
Background. The purpose of our study was to compare muscle oxygenation during walking exercise in physicallyactive, non-physically active normal weight and overweight 6–19- year-old children.Methods. Twenty four normal weight, physically non-active (NPA), 27 normal weight physically active (PA)and 17 overweight (OW) 6–19-year-old children participated in this study. Muscle oxygenation was recorded by nearinfrared spectroscopy during constant (6 min, 6 km/h, 4% grade) and increasing walking exercise (modified Balketest). Heart rate was recorded using Polar system.Results. Overweight children of all age groups demonstrated slower time constant of muscle oxygenation duringconstant walking exercise (37.2 ± 3 (6–10-year-old); 29.7 ± 2 (11–15-yr old), 33.4 ± 5.1 (16–19-year-old)) and lowerthreshold of oxygenation (TO) (84.3 ± 10.1, 104.5 ± 17.1, 188.5 ± 69.4 respectively) during increasing walkingexercise as compared NPA (111.8 ± 13.7, 124.4 ± 29.8, 192.6 ± 84 respectively) and PA (106.2 ± 35.2; 122 ± 13.3;340.8 ± 44.2 respectively) peers. The time constant of Deoxy-Hb during constant walking exercise was the shortestin PA (16.7 ± 2.3, 16.9 ± 2, 15.5 ± 4.7 respectively) in all age groups. The TO was higher in PA as compared to NWonly in 16–19 years of age.Conclusion. Muscle oxygenation during constant or increasing exercise is dependent on both body weight andphysical activity status in 6–19-year-old children.