| Exercise-Induced IGF-I System Concentrations after Training in Women. | |
| | |
MedLine Citation:
|
PMID: 23034644 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
INTRODUCTION: This study examined the effects of short-term physical training on the acute hormonal response (i.e. growth hormone [GH], total and free IGF-I, and IGFBP-1, -2, and -3) to resistance exercise (RE) in women. METHODS: Forty six women (20.3 ± 0.3 y, mass 64.1 ± 7.3 kg, height 165.7 ± 1.0 cm) were randomly assigned to an endurance training (E), resistance training (R), combined training (R+E), or control (C) group for 8 weeks. Subjects completed a standardized bout of resistance exercise (six sets of back squats at 10-RM) before and after training. Blood samples were obtained at rest (PRE), after the third set, immediately post-exercise (POST), and at 15 min and 30 min after exercise. RESULTS: Acute RE significantly increased (p < 0.05) serum GH (mean ± SD; change from PRE to POST; +10.9 ± 7.5 µg·l), total IGF-I (+66.1 ± 25.4 µg·l), IGFBP-1 (+2.5 ± 3.1 µg·l), IGFBP-2 (+86.0 ± 86.8 µg·l), and IGFBP-3 (+0.69 ± 0.25 mg·l) concentrations and decreased free IGF-I concentrations (-0.14 ± 0.21 µg·l). Following 8 weeks of training, total IGF-I concentrations were significantly increased (change in POST concentrations from week 0 to week 8: +82.5 ± 120.8 µg·l) and IGFBP-1 concentrations were significantly decreased (-6.7 ± 13.6 µg·l) during exercise in groups that participated in resistance training (R and R+E); no significant changes were seen following E or C. CONCLUSIONS: Participation in resistance training increased total IGF-I and reduced IGFBP-1 concentrations during acute resistance exercise, indicating exercise mode-specific adaptations in the circulating IGF-I system. |
| | |
Authors:
|
Sara M Gregory; Barry A Spiering; Joseph A Alemany; Alexander P Tuckow; Kevin R Rarick; Jeffery S Staab; Disa L Hatfield; William J Kraemer; Carl M Maresh; Bradley C Nindl |
Related Documents
:
|
675424 - The effect of oral magnesium chloride therapy on the qtc and quc intervals of the elect... 9453524 - Reliability of exercise-induced st segment changes to detect restenosis 3 months after ... 2083484 - St changes in relation to heart rate during bicycle exercise in patients with coronary ... 1621124 - Association of diabetic autonomic neuropathy with painless myocardial ischaemia induced... 17323844 - A home-based multidimensional exercise program reduced physical impairment and fear of ... 17273654 - Comparison of two questionnaires which measure the health-related quality of life of id... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-10-2 |
Journal Detail:
|
Title: Medicine and science in sports and exercise Volume: - ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2012 Oct |
Date Detail:
|
Created Date: 2012-10-4 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
1Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA; 2Deparment of Exercise and Sports Studies, Springfield College, Springfield, MA; 3Department of Kinesiology, University of Connecticut, Storrs, CT; 4Department of Exercise Science, University of South Carolina, SC, 5Department of Kinesiology, University of Rhode Island, RI. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Former Male Elite Athletes Have Lower Incidence of Fragility Fractures than Expected.
Next Document: Altered Landing Mechanics in ACL-Reconstructed Patients.