A comparison between ventilation and heart rate as an indicator of oxygen uptake during physical activities of different intensities

Steven Gastinger (1) , Anthony Sorel (2) , Guillaume Nicolas (3) , Arlette Gratas-Delamarche (2) , Jacques Prioux (2)

1 Laboratoire de Physiologie et de Biomécanique de l'Exercice Musculaire. UHB
2 M2S - Laboratoire Mouvement Sport Santé
3 Service de neurologie [Angers]

The aim of this study is to compare the relation between ventila-tion (VE) and oxygen uptake (VO2) [VO2=f (VE)] and between heart rate (HR) and VO2 [VO2=f (HR)]. Each one of the subjects performed three types of activities of different intensities (walk-ing without load, walking with load and intermittent work). VO2, VEand HR were measured continuously by using indirect calorimetry and an electrocardiogram. Linear regressions and coefficients of determination (râ²) were calculated to compare the relation VO2 = f (VE) and VO2 = f (HR) for two different regroupings: by session duration (râ²session) and by subject (râ²subject). Results showed that râ²session of the relation VO2 = f (VE) were significantly higher than those of the relation VO2 = f (HR) for steady state activities (walking with or without load during 3 or 6 min, p

Keywords: Physical activities; light to moderate intensities; steady state activities; non-steady state activities

Domains: Life Sciences [q-bio]

Steven Gastinger, Anthony Sorel, Guillaume Nicolas, Arlette Gratas-Delamarche, Jacques Prioux. A comparison between ventilation and heart rate as an indicator of oxygen uptake during physical activities of different intensities. Journal of Sports Science and Medicine, 2010, 9, pp.110-118. ⟨hal-01159494⟩