The Effect of Post Exercise Nutrition on Anabolic Response to Resistance Exercise

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dc.contributor.authorBird, Randy Leeen
dc.contributor.committeechairRankin, Janet L. Walbergen
dc.contributor.committeememberWebb, Kenneth E. Jr.en
dc.contributor.committeememberGwazdauskas, Francis C.en
dc.contributor.departmentHuman Nutrition, Foods, and Exerciseen
dc.date.accessioned2014-03-14T20:33:00Zen
dc.date.adate2005-04-13en
dc.date.available2014-03-14T20:33:00Zen
dc.date.issued2005-03-25en
dc.date.rdate2012-04-27en
dc.date.sdate2005-03-31en
dc.description.abstractPurpose: To determine the effect of four postexercise beverages, differing in macronutrient content, on metabolic response to an acute resistance exercise bout. Methods: Forty male subjects performed five sets of eight repetitions at 80% 1RM for leg press and leg extension, and then consumed one of four postexercise beverages (Placebo, PL: a carbohydrate-electrolyte beverage, CE; or one of two milk-based beverages, MILK 1: 1% chocolate milk; MILK 2: a high protein milk beverage). Indicators of muscle protein synthesis (MPS) were assessed before and 1-hr after consuming a postexercise beverage. Muscle protein degradation (MPD) was examined the day before and the day of exercise. Results: No significant differences were found among groups in MPS. The resistance exercise bout increased the amount of eIF4E-eIF4G by 4.5% 1-hr postexercise (p<0.05) without affecting the amount of eIF4E-4E-BP1. One hour after beverage consumption, serum total amino acid concentration increased for MILK 1 (p=0.003) and MILK 2 (p<0.001) but decreased for CE (p=0.028) and PL (p=0.276). Consumption of MILK 1, MILK 2, and CE significantly increased circulating levels of serum insulin (p<0.001). Serum growth hormone increased 3-fold as a result of the exercise bout but fell to baseline for all groups by 60 min (p<0.001). Conclusion: The resistance exercise bout was anabolic as shown by the increase in the active eIF4E-eIF4G complex and serum growth hormone. Consumption of MILK 2 led to the most optimal environment for muscle anabolism; however, none of the experimental beverages influenced the measured indicators of muscle protein translation 1-hr after ingestion.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-03312005-181941en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03312005-181941/en
dc.identifier.urihttp://hdl.handle.net/10919/31585en
dc.publisherVirginia Techen
dc.relation.haspartThesis_2.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectEukaryotic Initiation Factorsen
dc.subjectInsulinen
dc.subjectGrowth Hormoneen
dc.subject3MHen
dc.subjectMuscle Protein Degradationen
dc.subjectMuscle Protein Synthesisen
dc.subjectCarbohydratesen
dc.subjectProteinen
dc.subjectMilken
dc.titleThe Effect of Post Exercise Nutrition on Anabolic Response to Resistance Exerciseen
dc.typeThesisen
thesis.degree.disciplineHuman Nutrition, Foods, and Exerciseen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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