Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/8808
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dc.contributor.authorMettler, Samuel-
dc.contributor.authorMitchell, Nigel-
dc.contributor.authorTipton, Kevin-
dc.date.accessioned2016-08-25T20:50:29Z-
dc.date.issued2010-02-
dc.identifier.urihttp://hdl.handle.net/1893/8808-
dc.description.abstractPURPOSE: To examine the influence of dietary protein on lean body mass loss and performance during short-term hypoenergetic weight loss in athletes. METHODS: In a parallel design, 20 young healthy resistance-trained athletes were examined for energy expenditure for 1 wk and fed a mixed diet (15% protein, 100% energy) in the second week followed by a hypoenergetic diet (60% of the habitual energy intake), containing either 15% (approximately 1.0 g x kg(-1)) protein (control group, n = 10; CP) or 35% (approximately 2.3 g x kg(-1)) protein (high-protein group, n = 10; HP) for 2 wk. Subjects continued their habitual training throughout the study. Total, lean body, and fat mass, performance (squat jump, maximal isometric leg extension, one-repetition maximum (1RM) bench press, muscle endurance bench press, and 30-s Wingate test) and fasting blood samples (glucose, nonesterified fatty acids (NEFA), glycerol, urea, cortisol, free testosterone, free Insulin-like growth factor-1 (IGF-1), and growth hormone), and psychologic measures were examined at the end of each of the 4 wk. RESULTS: Total (-3.0 +/- 0.4 and -1.5 +/- 0.3 kg for the CP and HP, respectively, P = 0.036) and lean body mass loss (-1.6 +/- 0.3 and -0.3 +/- 0.3 kg, P = 0.006) were significantly larger in the CP compared with those in the HP. Fat loss, performance, and most blood parameters were not influenced by the diet. Urea was higher in HP, and NEFA and urea showed a group x time interaction. Fatigue ratings and "worse than normal" scores on the Daily Analysis of Life Demands for Athletes were higher in HP. CONCLUSIONS: These results indicate that approximately 2.3 g x kg(-1) or approximately 35% protein was significantly superior to approximately 1.0 g x kg(-1) or approximately 15% energy protein for maintenance of lean body mass in young healthy athletes during short-term hypoenergetic weight loss.en_UK
dc.language.isoen-
dc.publisherThe American College of Sports Medicine-
dc.relationMettler S, Mitchell N & Tipton K (2010) Increased Protein Intake Reduces Lean Body Mass Loss during Weight Loss in Athletes, Medicine and Science in Sports and Exercise, 42 (2), pp. 326-337.-
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.-
dc.subjectNutritionen_UK
dc.subjectExerciseen_UK
dc.subjectBody compositionen_UK
dc.subjectPerformanceen_UK
dc.titleIncreased Protein Intake Reduces Lean Body Mass Loss during Weight Loss in Athletesen_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2999-12-31T00:00:00Z-
dc.rights.embargoreasonThe publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.-
dc.identifier.doihttp://dx.doi.org/10.1249/MSS.0b013e3181b2ef8e-
dc.citation.jtitleMedicine and Science in Sports and Exercise-
dc.citation.issn0195-9131-
dc.citation.volume42-
dc.citation.issue2-
dc.citation.spage326-
dc.citation.epage337-
dc.citation.publicationstatusPublished-
dc.citation.peerreviewedRefereed-
dc.type.statusPublisher version (final published refereed version)-
dc.author.emailk.d.tipton@stir.ac.uk-
dc.contributor.affiliationUniversity of Birmingham-
dc.contributor.affiliationUniversity of Birmingham-
dc.contributor.affiliationSport-
dc.rights.embargoterms2999-12-31-
dc.rights.embargoliftdate2999-12-31-
dc.identifier.isi000274081800014-
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles

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