Heart rate during bicycle ergometer exercise in watts per kilogram body weight of 12 and 13 year old boys
✍ Scribed by Kemper, H. C. G.
- Book ID
- 104780907
- Publisher
- Springer-Verlag
- Year
- 1972
- Weight
- 423 KB
- Volume
- 113
- Category
- Article
- ISSN
- 0044-2917
No coin nor oath required. For personal study only.
✦ Synopsis
The purpose of this study was: 1. To check wether subjects reached a constant heart rate (/h) during 6 rain constant work load (W) at 3 submaximal levels of intensity.
-
To investigate the comparability of functional load in boys of same age with different body weight as response to external load in watts per kilogram body weight.
-
To calculate the regression equation(s) with ~ as independent variable and /h as dependent variable.
Methods. External load: bicycle ergometer exercise, 3 discontinuous series of increasing loads, 1.0, 1.5, and 2.0 W/kg, duration 6 min each with intermittent rest periods of I min. Functional load: R-R interval (msec) from precordial E.C.G. Subjects: 12 and 13 year old schoolboys, n ----80, divided into body weight groups of 30, 35, 40, 50 and above 50 kg.
Results. 1. During the last four 30 sec periods of each workload no constant R-R interval could be estabiished; the decrease was significant at p ~ 0.001. 2. No significant differences (p > 0.05) in mean heart rate at 3 work loads could be proved between the 6 weight groups; the total variance is mainly explained by variance between subjects in same weight group (55%) and by variance with in subjects (35%).
- The l)r ~ 0 of all subjects, calculated from the regression equation was 2.0 W/kg body weight.