Changes in plasma leptin and insulin action with resistive training in postmenopausal women

OBJECTIVE: To determine the effects of 16 weeks of resistive training alone (RT) and with weight loss (RT + WL) on insulin action, plasma leptin concentrations and leptin's relationship to beta-cell sensitivity to glucose, resting metabolic rate (RMR), and plasma catecholamines in older women....

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Bibliographic Details
Published in:International Journal of Obesity 2000-01, Vol.24 (1), p.27-32
Main Authors: Ryan, A.S, Pratley, R.E, Elahi, D, Goldberg, A.P
Format: Article
Language:English
Subjects:
Biological and medical sciences
blood glucose
Body composition
Body fat
Body weight
Calorimetry
Catecholamines
dual-energy X-ray absorptiometry
Energy
epinephrine
Exercise
Gerontology
Glucose
hyperglycemia
Insulin
Insulin resistance
islets of Langerhans
lean body mass
leptin
Medical sciences
Metabolic diseases
Metabolism
norepinephrine
Obesity
Oxygen consumption
Physical fitness
Plasma
postmenopause
radioimmunoassays
resting metabolic rate
strength training
Training
Weight control
weight loss
Women
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Summary:OBJECTIVE: To determine the effects of 16 weeks of resistive training alone (RT) and with weight loss (RT + WL) on insulin action, plasma leptin concentrations and leptin's relationship to beta-cell sensitivity to glucose, resting metabolic rate (RMR), and plasma catecholamines in older women. SUBJECTS: Fifteen obese postmenopausal women aged 50-69 y. MEASUREMENTS: Body composition (by dual-energy X-ray absorptiometry), RMR (by indirect calorimetry), insulin action (by 2 h hyperglycemic clamps; 7.9 mmol/l above basal plasma glucose levels), plasma leptin and insulin (by RIA), and plasma catecholamines (by enzymatic methods). RESULTS: RT and RT + WL resulted in significant improvements in muscular strength (P
ISSN:0307-0565
1476-5497
DOI:10.1038/sj.ijo.0801080