| Oxygen-uptake efficiency slope as a determinant of fitness in overweight adolescents. | |
| | |
MedLine Citation:
|
PMID: 17909409 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: Peak oxygen uptake (VO2peak) is frequently difficult to assess in overweight individuals; therefore, submaximal measures that predict VO2peak are proposed as substitutes. Oxygen uptake efficiency slope (OUES) has been suggested as a submaximal measurement of cardiorespiratory fitness that is independent of exercise intensity. There are few data examining its value as a predictor of V O2peak in severely overweight adolescents. METHODS: One hundred seven severely overweight (BMI Z 2.50 +/- 0.34) and 43 nonoverweight (BMI Z 0.13 +/- 0.84) adolescents, performed a maximal cycle ergometer test with respiratory gas-exchange measurements. OUES was calculated through three exercise intensities: lactate inflection point (OUES LI), 150% of lactate inflection point (OUES 150), and VO2peak (OUES PEAK). RESULTS: When adjusted for lean body mass, VO2peak and OUES at all exercise intensities were lower in overweight subjects (VO2peak: 35.3 +/- 6.4 vs 46.8 +/- 7.9 mL.kg(-1) LBM.min(-1), P < 0.001; OUES LI: 37.9 +/- 10.0 vs 43.7 +/- 9.2 mL.kg(-1) LBM.min(-1).logL(-1) P < 0.001; OUES 150: 41.6 +/- 9.0 vs 49.8 +/- 11.1 mL.kg(-1) LBM.min(-1).logL(-1) P < 0.001; and OUES PEAK: 45.1 +/- 8.7 vs 52.8 +/- 9.6 mL.kg(-1) LBM.min(-1).logL(-1) P < 0.001). There was a significant increase in OUES with increasing exercise intensity in both groups (P < 0.001). OUES at all exercise intensities was a significant predictor of VO2peak for both groups (r2 = 0.35-0.83, P < 0.0001). However, limits of agreement for predicted VO2peak relative to actual VO2peak were wide (+/- 478 to +/- 670 mL.min(-1)). CONCLUSIONS: OUES differs significantly in overweight and nonoverweight adolescents. The wide interindividual variation and the exercise intensity dependence of OUES preclude its use in clinical practice as a predictor of VO2peak. |
| | |
Authors:
|
Bart Drinkard; Mary D Roberts; Lisa M Ranzenhofer; Joan C Han; Lisa B Yanoff; Deborah P Merke; David M Savastano; Sheila Brady; Jack A Yanovski |
Related Documents
:
|
18379209 - Current trends in lactate metabolism: introduction. 2366529 - Effect of specific test procedures on plasma lactate concentration and peak oxygen upta... 21421819 - Hyperbaric hyperoxia reduces exercising forearm blood flow in humans. 21304339 - Supramaximal verification of peak oxygen uptake in adolescents with cystic fibrosis. 22265269 - Factors influencing commencement and adherence to a home-based balance exercise program... 16772579 - The effect of digit amputation or arthrodesis surgery on culling and milk production in... 23132819 - Effects of treatment differences on psychosocial predictors of exercise and improved ea... 11247949 - Role of nitric oxide during hyperventilation-induced bronchoconstriction in the guinea ... 8819239 - Metabolic responses and mechanisms during water immersion running and exercise. |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, N.I.H., Intramural |
Journal Detail:
|
Title: Medicine and science in sports and exercise Volume: 39 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2007 Oct |
Date Detail:
|
Created Date: 2007-10-02 Completed Date: 2008-01-11 Revised Date: 2012-03-07 |
Medline Journal Info:
|
Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
|
Languages: eng Pagination: 1811-6 Citation Subset: IM; S |
Affiliation:
|
Rehabilitation Medicine Department, Mark O. Hatfield Clinical Research Center, National Institutes of Health, Bethesda, MD, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Child District of Columbia Exercise Test Female Humans Male Overweight* Oxygen Consumption / physiology* Physical Fitness / physiology* Pulmonary Ventilation / physiology* |
| Grant Support | |
ID/Acronym/Agency:
|
Z01 HD000641-12/HD/NICHD NIH HHS; Z99 HD999999/HD/NICHD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Effects of plyometric and weight training on muscle-tendon complex and jump performance.
Next Document: Effect of hydration state on strength, power, and resistance exercise performance.