Effects of acute exercise on appetite hormones and ad libitum energy intake in men and women.
Acute exercise suppresses relative energy intake; however, it remains unclear whether this occurs in both men and women exposed to the same relative exercise treatment. Eleven healthy men (22 ± 2 years; 16% ± 6% body fat (BF); 26 ± 4 body mass index (BMI); 42.9 ± 6.5 mL·kg(-1)·min(-1) peak oxygen consumption ([Formula: see text]O(2peak))) and 10 healthy women (21 ± 2 years; 24 ± 2 BMI; 23% ± 3% BF; 39.9 ± 5.5 mL·kg(-1)·min(-1) [Formula: see text]O(2peak)) rested for 60 min or exercised on a cycle ergometer at 70% [Formula: see text]O(2peak) until 30% of total daily energy expenditure was expended (men, expenditure = 975 ± 195 kcal in 82 ± 13 min; women, expenditure = 713 ± 86 kcal in 84 ± 17 min) in a counterbalanced, crossover fashion. Appetite hormones and appetite ratings were assessed in response to each condition. Forty minutes after both conditions, ad libitum total and relative energy intake (energy intake minus energy cost of exercise) were assessed at a buffet meal. There was no significant sex or condition effect in appetite hormones (PYY(3-36), acylated ghrelin, insulin) and appetite ratings (hunger, satisfaction, fullness). Total energy intake in men was significantly higher (P < 0.05) in exercise and rest conditions (1648 ± 950, 1216 ± 633 kcal, respectively) compared with women (591 ± 183, 590 ± 231 kcal, respectively). Relative energy intake was significantly lower (P < 0.05) after exercise compared with rest in men (672 ± 827, 1133 ± 619 kcal, respectively) and women (-121 ± 243, 530 ± 233 kcal, respectively). These data highlight the effectiveness of acute exercise to suppress relative energy intake regardless of sex.
Kinesiology Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA. thagobia@calpoly.edu
Todd Alan
TA
Hagobian
Megan
M
Yamashiro
Jake
J
Hinkel-Lipsker
Katherine
K
Streder
Nero
N
Evero
Terry
T
Hackney
D000328:Adult; D000704:Analysis of Variance; D001066:Appetite / Q000502:physiology*; D001642:Bicycling / Q000502:physiology; D015415:Biomarkers / Q000097:blood; D018592:Cross-Over Studies; D002149:Energy Intake / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005260:Female; D054439:Ghrelin / Q000097:blood*; D006801:Humans; D007328:Insulin / Q000097:blood*; D008297:Male; D019894:Peptide YY / Q000097:blood*; D005082:Physical Exertion / Q000502:physiology; D012016:Reference Values; D012146:Rest; D012737:Sex Factors; D055815:Young Adult
D015415:Biomarkers; D054439:Ghrelin; D007328:Insulin; D019894:Peptide YY