Changes in Body Composition and Neuromuscular Performance Through Preparation, 2 Competitions, and a Recovery Period in an Experienced Female Physique Athlete

Grant M. Tinsley, Eric T. Trexler, Abbie E. Smith-Ryan, Antonio Paoli, Austin J. Graybeal, Bill I. Campbell, Brad J. Schoenfeld

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Tinsley, GM, Trexler, ET, Smith-Ryan, AE, Paoli, A, Graybeal, AJ, Campbell, BI, and Schoenfeld, BJ. Changes in body composition and neuromuscular performance through preparation, two competitions, and a recovery period in an experienced female physique athlete. J Strength Cond Res 33(7): 1823-1839, 2019 - This prospective case study evaluated an experienced female figure competitor during contest preparation, 2 competitions, and a recovery period. Twelve laboratory sessions were conducted over 8 months. At each visit, body composition was assessed by 4-compartment model, resting metabolic rate (RMR) by indirect calorimetry, and neuromuscular performance by peak force and rate of force development (RFD) on a mechanized squat device. Caloric intake ranged from 965 to 1,610 kcal·d-1 (16.1-24.8 kcal·kg·BM-1; 18.2-31.1 kcal·kg·FFM-1), with varying macronutrient intakes (CHO: 0.3-4.8 g·kg-1; PRO: 1.7-3.0 g·kg-1 FAT: 0.2-0.5 g·kg-1). Body fat was reduced from 20.3 to 12.2% before the first competition and declined to 11.6% before the second competition. Fat-free mass increased by 2.1% before the first competition and peaked at 4.6% above baseline in the recovery period. Resting metabolic rate decreased from 1,345 kcal·d-1 at baseline to a low value of 1,119 kcal·d-1 between competitions. By the end of recovery, RMR increased to 1,435 kcal·d-1. Concentric and eccentric peak forces declined by up to 19% before the first competition, experienced perturbations in the inter-competition and recovery periods, and remained 5-8% below baseline at study termination. Similarly, RFD decreased by up to 57% before the first competition, was partially recovered, but remained 39% lower than baseline at study termination. Despite favorable body composition changes, neuromuscular performance was impaired during and after the competitive season in an experienced female physique competitor.

Original languageEnglish
Pages (from-to)1823-1839
Number of pages17
JournalJournal of strength and conditioning research
Volume33
Issue number7
DOIs
StatePublished - Jul 1 2019

Keywords

  • bodybuilding
  • dieting
  • energy intake
  • fat loss
  • resistance training

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