This study determined the effects of a 20-wk endurance training program (The HERITAGE Family Study) on resting heart rate (HRrest).
HRrest was obtained on a sample of 26 men and 21 women during sleep ; during resting metabolic rate and resting blood pressure measurement periods in the early morning following a 12-h fast and 24-h post-exercise ; and at rest prior to a maximal bout of exercise.
Following training, the subjects exhibited a 16.0 ± 9.4% (mean ± SD) increase in VO2max (P<0.05), but the HRrest for each of the resting conditions was decreased by only 1.9 to 3.4 bpm (P<0.05), or an average across the three conditions of 2.7 bpm.
In a larger sample of 253 HERITAGE subjects, HRrest obtained only at the time of the resting blood pressure measurement decreased by only 2.6 bpm, while VO2max increased 17.7 ± 10.0%. It is concluded that there is a significant, but small, decrease in resting heart rate as a result of 20 wk of moderate-to high-intensity endurance training ; which suggests a minimal alteration in either, or both, intrinsic heart rate and autonomic control of HRrest.
Mots-clés Pascal : Exercice physique, Endurance, Bicyclette ergométrique, Rythme cardiaque, Repos, Coeur, Contrôle cardiovasculaire, Etude familiale, Epidémiologie, Appareil circulatoire, Homme
Mots-clés Pascal anglais : Physical exercise, Endurance, Bicycle ergometer, Heart rate, Rest, Heart, Cardiovascular control, Family study, Epidemiology, Circulatory system, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0419763
Code Inist : 002A22C. Création : 10/04/1997.