Previous epidemiological studies have suggested an association between low levels of physical activity, fitness and the metabolic cardiovascular syndrome.
However, many studies have used subjective non-quantitative questionnaire-based methods for assessing physical activity which do not distinguish between the different dimensions of this complex exposure, and in which measurement error in the exposure has not been estimated.
These deficiencies in the measurement of this exposure complicate the interpretation of the results of epidemiological studies, and consequently make it difficult to design appropriate interventions and to estimate the expected benefit which would result from intervention.
In particular, it is unclear whether public health advice should be to increase total energy expenditure, or to attempt to raise fitness by recommending periods of vigorous activity.
To separate the effects of fitness and total energy expenditure in the aetiology of the metabolic cardiovascular syndrome, we measured the physical activity level (PAL), defined as total energy expenditure : BMR, and fitness (maximum O2 consumption (Vo2max per kg), measured in a sub-maximal test) in a cross-sectional population-based study of 162 adults aged 30-40 years.
Heart-rate monitoring with individual calibration was used to measure total energy expenditure using the HRFlex method (Ceesay et al. (...)
Mots-clés Pascal : Exercice physique, Dépense énergétique, Fitness, Analyse quantitative, Epidémiologie, X Syndrome, Etiologie, Facteur milieu, Appareil circulatoire pathologie, Endocrinopathie, Métabolisme pathologie, Homme
Mots-clés Pascal anglais : Physical exercise, Energetic cost, Fitness, Quantitative analysis, Epidemiology, X Syndrome, Etiology, Environmental factor, Cardiovascular disease, Endocrinopathy, Metabolic diseases, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0517443
Code Inist : 002B30A01A2. Création : 23/03/1999.