| Whey Protein Before and During Resistance Exercise Has No Effect on Muscle Mass and Strength in Untrained Young Adults. | |
| | |
MedLine Citation:
|
PMID: 22806076 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
PURPOSE: To determine the effects of whey protein before and during resistance exercise (RE) on body composition and strength in young adults. METHODS: Participants were randomized to ingest whey protein (PRO; 0.3g·kg-1 protein; n=9, 24.58±1.8 yrs, 88.3±17.1 kg, 172.5±8.0 cm) or placebo (PLA; 0.2g·kg-1 corn-starch maltodextrin + 0.1g·kg-1 sucrose; n=8, 23.6±4.4 yrs, 82.6±16.1 kg, 169.4±9.2 cm) during RE (3 sets of 6-10 repetitions for 9 whole-body exercises), which was performed 4 days per week for 8 weeks. Protein and placebo were mixed with water (600ml) and 50% of the solution containing 0.15g·kg-1 of protein or placebo was consumed immediately prior to the start of exercise and ~1.9% of the remaining solution containing ~0.006g·kg-1 of protein or placebo was consumed immediately following each training set. Before and after the study, measures were taken for lean tissue mass (dual energy x-ray absorptiometry), muscle size of the elbow and knee flexors and extensors and ankle dorsi flexors and plantar flexors (ultrasound), and muscle strength (1-repetition maximum chest press). RESULTS: There was a significant increase (p<0.05) in muscle size of the knee extensors (PRO: 0.6±0.4 cm, PLA: 0.1±0.5 cm), knee flexors (PRO: 0.4±0.6 cm, PLA: 0.5±0.7 cm), ankle plantar flexors (PRO: 0.6±0.7 cm, PLA: 0.8±1.4 cm), and chest press strength (PRO: 16.6±11.1 kg, PLA: 9.1±14.6 kg) over time, with no differences between groups. CONCLUSION: The ingestion of whey protein immediately before the start of exercise and again following each training set has no effect on muscle mass and strength in untrained young adults. |
| | |
Authors:
|
Krissy D Weisgarber; Darren G Candow; S M Vogt E |
Related Documents
:
|
16772926 - Cutaneous tissue flap viability following partial venous obstruction. 7113886 - Cardiovascular fitness. 2389836 - Transcutaneous measurement of oxygen and carbon dioxide tension (tcpo2 and tcpco2) duri... 3348346 - Corneal oxygen availability during contact lens wear: a comparison of methodologies. 19719746 - Digoxin increases peripheral chemosensitivity and the ventilatory response to exercise ... 19168926 - Optimal loading for peak power output during the hang power clean in professional rugby... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-7-4 |
Journal Detail:
|
Title: International journal of sport nutrition and exercise metabolism Volume: - ISSN: 1543-2742 ISO Abbreviation: - Publication Date: 2012 Jul |
Date Detail:
|
Created Date: 2012-7-18 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100939812 Medline TA: Int J Sport Nutr Exerc Metab Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Faculty of Kinesiology and Health Studies, University of Regina, Regina, Saskatchewan, Canada. |
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: The roles of benzoic acid and water on the Michael reactions of pentanal and nitrostyrene catalyzed ...
Next Document: Synthesis and characterisation of large chlorapatite single-crystals with controlled morphology and ...