Effect of aerobic exercise on hunger feelings and satiety regulating hormones in obese teenage girls.
Exercise is implicated in modifying subsequent energy intake (EI) through alterations in hunger and/or satiety hormones. Our aim was to examine the effects of aerobic exercise on hunger, satiety regulatory peptides, and EI in obese adolescents. Nine obese girls (age: 13-18 years old, BMI: 33.74 ± 4.04 kg/m2) participated in this randomized controlled crossover study. Each participant randomly underwent 2 experimental protocols: control (seated for 150 min) and exercise (exercised for 30 min on a treadmill performed at ventilatory threshold [VT] intensity and then remained seated for 120 min). Leptin, peptide YY(3-36) (PYY(3-36)), and subjective hunger were measured at baseline as well as 30 min and 150 min, followed by 24-hr EI measurement. Exercise session resulted in an acute increase in PYY(3-36) (p < .01) without changes in leptin and/or hunger scores. The control session increased hunger scores (p < .01) and decreased circulating leptin levels (p = .03). There was a strong effect size for carbohydrate intake (d = 2.14) and a modest effect size for protein intake (d = 0.61) after the exercise compared with the control session. Exercise performed at VT intensity in this study appears to provoke a state of transient anorexia in obese girls. These changes may be linked to an increase in circulating PYY3-36 and maintenance of leptin levels.
Dept. of Human Movement Sciences, Federal University of São Paulo, São Paulo, Brazil.
Wagner L
WL
Prado
P Babu
PB
Balagopal
Mara C
MC
Lofrano-Prado
Lila M
LM
Oyama
Thiago Ricardo
TR
Tenório
João Paulo
JP
Botero
James O
JO
Hill
D000293:Adolescent; D018592:Cross-Over Studies; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D006815:Hunger / Q000502:physiology*; D020738:Leptin / Q000097:blood*; D009765:Obesity / Q000097:blood* / Q000503:physiopathology*; D010446:Peptide Fragments / Q000097:blood*; D019894:Peptide YY / Q000097:blood*
D020738:Leptin; D010446:Peptide Fragments; D019894:Peptide YY; C061785:peptide YY (3-36)