TY - JOUR
T1 - Association of Physical Activity With Maximal and Submaximal Tests of Exercise Capacity in Middle- and Older-Aged Adults
AU - Mediano, Mauro F.F.
AU - Fleg, Jerome L.
AU - Wanigatunga, Amal A.
AU - Gonçalves, Tatiana R.
AU - Martinez-Amezcua, Pablo
AU - Szklo, Moyses
AU - Simonsick, Eleanor M.
AU - Ferrucci, Luigi
AU - Schrack, Jennifer A.
N1 - Publisher Copyright:
© 2022 Human Kinetics, Inc
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Although physical activity (PA) is an important determinant of exercise capacity, the association between these constructs is modest. The authors investigated the associations of self-reported and objectively measured PA with maximal and submaximal tests of exercise capacity. Participants aged ≥40 years (N = 413; 49.6% female) completed a PA questionnaire, wore a uniaxial accelerometer (5.2 ± 1.1 days), and performed maximal (cardiopulmonary exercise test [CPET]) and submaximal (long-distance corridor walk) tests with indirect calorimetry (oxygen consumption, VO2). Linear regression models were fitted to assess the variation in exercise capacity explained (partial eta squared, η2) by PA variables. Accelerometer-measured vigorous (η2 = 22% female; η2 = 16% male) and total PA (η2 = 17% female; η2 = 13% male) explained the most variance in CPET VO2 (p < .001). All η2 values were lower for long-distance corridor walk VO2 (η2 ≤ 11%). Age contributed more to CPET VO2 than any PA variable in males (η2 = 32%), but not in females (η2 = 19%). Vigorous and total PA play important roles in CPET VO2 in mid to late life.
AB - Although physical activity (PA) is an important determinant of exercise capacity, the association between these constructs is modest. The authors investigated the associations of self-reported and objectively measured PA with maximal and submaximal tests of exercise capacity. Participants aged ≥40 years (N = 413; 49.6% female) completed a PA questionnaire, wore a uniaxial accelerometer (5.2 ± 1.1 days), and performed maximal (cardiopulmonary exercise test [CPET]) and submaximal (long-distance corridor walk) tests with indirect calorimetry (oxygen consumption, VO2). Linear regression models were fitted to assess the variation in exercise capacity explained (partial eta squared, η2) by PA variables. Accelerometer-measured vigorous (η2 = 22% female; η2 = 16% male) and total PA (η2 = 17% female; η2 = 13% male) explained the most variance in CPET VO2 (p < .001). All η2 values were lower for long-distance corridor walk VO2 (η2 ≤ 11%). Age contributed more to CPET VO2 than any PA variable in males (η2 = 32%), but not in females (η2 = 19%). Vigorous and total PA play important roles in CPET VO2 in mid to late life.
KW - accelerometry
KW - functional capacity
KW - physical performance
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U2 - 10.1123/japa.2020-0439
DO - 10.1123/japa.2020-0439
M3 - Article
C2 - 34407506
AN - SCOPUS:85128160383
SN - 1063-8652
VL - 30
SP - 271
EP - 280
JO - Journal of Aging and Physical Activity
JF - Journal of Aging and Physical Activity
IS - 2
ER -