Effects of Aerobic, Strength or Combined Exercise on Perceived Appetite and Appetite-Related Hormones in Inactive Middle-Aged Men

Aerobic exercise (AE) and strength exercise (SE) are reported to induce discrete and specific appetite-related responses; however, the effect of combining AE and SE (i.e., combined exercise; CE) remains relatively unknown. Twelve inactive overweight men (age: 48 ± 5 y; BMI: 29.9 ± 1.9 kg∙m ) complet...

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Bibliographic Details
Published in:International journal of sport nutrition and exercise metabolism 2017-10, Vol.27 (5), p.389-398
Main Authors: Larsen, Penelope S, Donges, Cheyne E, Guelfi, Kym J, Smith, Greg C, Adams, David R, Duffield, Rob
Format: Article
Language:English
Subjects:
Adult
Appetite - physiology
Energy Intake
Exercise - physiology
Exercise Test
Gastric Inhibitory Polypeptide - blood
Ghrelin - blood
Heart Rate
Humans
Lactic Acid - blood
Male
Middle Aged
Overweight
Oxygen Consumption
Pancreatic Polypeptide - blood
Resistance Training
Rest
Sedentary Lifestyle
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Summary:Aerobic exercise (AE) and strength exercise (SE) are reported to induce discrete and specific appetite-related responses; however, the effect of combining AE and SE (i.e., combined exercise; CE) remains relatively unknown. Twelve inactive overweight men (age: 48 ± 5 y; BMI: 29.9 ± 1.9 kg∙m ) completed four conditions in a random order: 1) nonexercise control (CON) (50 min seated rest); 2) AE (50 min cycling; 75% VO ); 3) SE (10 × 8 leg extensions; 75% 1RM); and 4) CE (50% SE + 50% AE). Perceived appetite, and appetiterelated peptides and metabolites were assessed before and up to 2 h postcondition (0P, 30P, 60P, 90P, 120P). Perceived appetite did not differ between trials (p < .05). Acylated ghrelin was lower at 0P in AE compared with CON (p = .039), while pancreatic polypeptide (PP) was elevated following AE compared with CON and CE. Glucose-dependent insulinotropic peptide (GIP ) was greater following all exercise conditions compared with CON, as was glucagon, although concentrations were generally highest in AE (p < .05). Glucose was acutely increased with SE and AE (p < .05), while insulin and C-peptide were higher after SE compared with all other conditions (p < .05). In inactive, middle-aged men AE, SE and CE each have their own distinct effects on circulating appetite-related peptides and metabolites. Despite these differential exercise-induced hormone responses, exercise mode appears to have little effect on perceived appetite compared with a resting control in this population.
ISSN:1526-484X
1543-2742
DOI:10.1123/ijsnem.2017-0144