Most studies of physical fitness change have been relatively small, not population-based, and lacking in women and nonwhites.
The purpose of this analysis was to evaluate the 7-yr change in physical fitness in a biracial (black and white) population of young men and women.
We evaluated change in exercise treadmill test performance in a biracial (black and white) population of 1,962 young adults, ages 18-30 yr at baseline, who completed symptom-limited graded exercise treadmill tests at the baseline (1985-1986) and year 7 (1992-1993) examinations of the CARDIA study.
Mean test duration decreased 58 s (9.5%) over 7 yr (black men, 13.6% decrease, white men, 7.4% ; black women, 11.1% ; white women, 7.0%). Mean time to heart rate 130 (WL130), a measure of submaximal performance, decreased 31 s (11.3%) (black men, 16.9% ; white men, 10.0% : black women, 12.3% ; white women, 6.1%). Baseline body mass index (BMI) and physical activity were not statistically significant predictors of test duration change in any race-gender group, but change in BMI and activity were.
Seven-year weight gain>20 Ibs (31% of cohort) was associated with a large decrease in fitness (18.5% decrease in mean duration, 21.8% decrease in WL130).
These data suggest that fitness declines during young adulthood in blacks and whites and that fitness changes are related to changes in weight and physical activity.
Mots-clés Pascal : Exercice physique, Epreuve tapis roulant, Performance physique, Aptitude physique, Epidémiologie, Etude longitudinale, Adulte jeune, Homme, Etats Unis, Amérique du Nord, Amérique, Obésité, Etat nutritionnel, Trouble nutrition, Noirs, Blancs
Mots-clés Pascal anglais : Physical exercise, Treadmill exercise, Physical performance, Physical fitness, Epidemiology, Follow up study, Young adult, Human, United States, North America, America, Obesity, Nutritional status, Nutrition disorder, Blacks, Whites
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0202856
Code Inist : 002B22B. Création : 11/09/1998.