Keywords
leptin, obesity, acute exercise, energy expenditure
Abstract
Recent findings suggest that leptin may be regulated in response to abrupt changes in energy homeostasis. Therefore, it is conceivable that transient changes in energy balance induced by exercise may also regulate leptin synthesis and secretion. As such, we hypothesized that acute increases energy expenditure (i.e. exercise), may regulate leptin concentrations in obese individuals. Fifteen healthy obese males underwent either a single exercise session of moderate intensity (58.4 % ± 4.0 of VO2max) for 60 min (n=8), or served as controls (n=7). The exercise session elicited an energy expenditure of 567±80 Kcal. No significant changes in plasma leptin (pre 23.5± 30.2; post 24.3± 34.3; 24h-post 34.9± 66.6; 48h-post 33.8±64.0 ng/ml), or insulin levels (pre 16.1± 9.2 vs. post 8.1± 9.1; 24h-post 14.3± 9.9; 48h-post 13.8± 10.2 ?U/ml) were detected immediately after the intervention. Baseline plasma leptin levels were positively correlated with BMI (r=0.65; p<0.01), body weight (r=0.64; p<0.01), % body fat (r=0.90; p<0.01) and were negatively correlated with VO2max (r=-0.82; p<0.01). The results of the present study suggest that acute exercise of moderate intensity and duration may not affect leptin concentration.
Notes
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Graduation Date
2005
Semester
Spring
Advisor
Angelopoulos, Theodore
Degree
Master of Arts (M.A.)
College
College of Education
Department
Child, Family, and Community Sciences
Degree Program
Physical Education
Format
application/pdf
Identifier
CFE0000508
URL
http://purl.fcla.edu/fcla/etd/CFE0000508
Language
English
Release Date
May 2005
Length of Campus-only Access
None
Access Status
Masters Thesis (Open Access)
STARS Citation
Kyriazis, George, "The Effects Of A Single Exercise Bout On Plasma Leptin Concentration In Obese Males" (2005). Electronic Theses and Dissertations. 346.
https://stars.library.ucf.edu/etd/346