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Title:

Predictors of post-exercise energy intake differ between men and women

Document type:
Konferenzbeitrag
Contribution type:
Poster
Author(s):
Höchsmann, H.; Beckford, S.E.; French, J.A.; Boron, J.B.; Stevens, J.R.; Koehler, K.
Abstract:
Objective: Energy intake in response to exercise is highly variable. While some individuals show reduced energy intake post-exercise, allowing for an exercise-induced energy deficit, others show increased energy intake, (over-) compensating the expended energy. In an exploratory analysis, we aimed to identify physiological and behavioral predictors of ad libitum food intake following a one-time aerobic exercise session. Methods: After an overnight fast and a standardized breakfast, 57 healthy participants (21.7 ± 2.5 years; 23.7 ± 2.3 kg/m2 , 54% female) completed a 45 min exercise session (60% VO2- peak) on a bike ergometer followed by an ad libitum single-item (cheese pizza) food intake test. We used simple linear regression analyses to assess the associations between physiological and behavioral baseline characteristics and energy intake (kcal). Results: On average, participants expended 343 ± 85 kcal during the exercise session and consumed 867 ± 411 kcal during the subsequent test meal. We found an inverse association between participants’ habitual exercise behavior (on average 246 ± 181 min/week, via self-report) and energy intake during the test meal (β = -0.29, P = 0.03) and a positive association between fasting concentrations of peptide YY (PYY) and energy intake (β = 0.35, P = 0.03). Results also differed by sex (P = 0.02): PYY (β = 0.82, P < 0.01) and additionally adiponectin (β = 0.61, P = 0.01) were significant predictors of energy intake only in men, while habitual exercise (β = -0.44, P = 0.02) was a significant predictor of post-exercise energy intake only in women. Conclusion: Our results suggest sex differences in predictors of post-exercise energy intake – in women, greater amounts of habitual exercise seem to protect from compensatory eating, while in men appetite-regulating hormones are predictive of post-exercise energy intake. These findings may help explain why some individuals compensate the energy expended via exercise and others do not.
Dewey Decimal Classification:
570 Biowissenschaften, Biologie; 610 Medizin und Gesundheit; 790 Sport, Spiele, Unterhaltung
Book / Congress title:
Proceedings of the German Nutrition Society, Abstractband zum 59. Wissenschaftlichen Kongress
Congress (additional information):
Potsdam
Volume:
28
Date of congress:
16.-18.03.2022
Year:
2022
Quarter:
1. Quartal
Print-ISBN:
978-3-9818414-4-2
Reviewed:
ja
Language:
en
Publication format:
WWW
Semester:
WS 21-22
TUM Institution:
Professur für Bewegung, Ernährung und Gesundheit
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