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Hormonal and Metabolic Responses to a Resistance Exercise Protocol in Lean Children, Obese Children, and Lean Adults.
- Source :
- Pediatric Exercise Science; Nov2014, Vol. 26 Issue 4, p444-454, 11p, 1 Diagram, 3 Charts, 1 Graph
- Publication Year :
- 2014
-
Abstract
- During childhood, varying exercise modalities are recommended to stimulate normal growth, development, and health. This project investigated hormonal and metabolic responses triggered by a resistance exercise protocol in lean children (age: 9.3 ± 1.4 y, body fat: 18.3 ± 4.9%), obese children (age: 9.6 ± 1.3 y, body fat: 40.3 ± 5.2%) and lean adults (age: 23.3 ± 2.4 y, body fat: 12.7 ± 2.9%). The protocol consisted of stepping onto a raised platform (height = 20% of stature) while wearing a weighted vest (resistance = 50% of lean body mass). Participants completed 6 sets of 10 repetitions per leg with a 1-min rest period between sets. Blood samples were obtained at rest preexercise, immediately postexercise and 2 times throughout the 1-hr recovery to analyze possible changes in hormones and metabolites. Children-adult differences included a larger exercise-induced norepinephrine increase in adults vs. children and a decrease in glucagon in children but not adults. Similarities between adults and children were observed for GH-IGF-1 axis responses. Metabolically, children presented with lower glycolytic and increased fat metabolism after exercise than adults did. Obesity in childhood negatively influenced GH, insulin, and glucose concentrations. While adults occasionally differed from children, amount of activated lean mass, not maturation, likely drove these dissimilarities. [ABSTRACT FROM AUTHOR]
- Subjects :
- ADRENALINE
AGE distribution
ANALYSIS of variance
BLOOD pressure
BODY composition
BODY weight
CARRIER proteins
COMPARATIVE studies
EXERCISE
FATTY acids
GLUCAGON
HEART beat
HORMONES
LACTATES
LONGITUDINAL method
METABOLISM
NORADRENALINE
CHILDHOOD obesity
PROBABILITY theory
RESEARCH funding
STATISTICS
DATA analysis
DESCRIPTIVE statistics
RESISTANCE training
Subjects
Details
- Language :
- English
- ISSN :
- 08998493
- Volume :
- 26
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Pediatric Exercise Science
- Publication Type :
- Academic Journal
- Accession number :
- 99305272
- Full Text :
- https://doi.org/10.1123/pes.2014-0073