Lean Body Mass and Muscle Cross-Sectional Area Adaptations Among College Age Males with Different Strength Levels across 11 Weeks of Block Periodized Programmed Resistance Training

Paul A. Moquin, Alexander B. Wetmore, Kevin M. Carroll, Andrew C. Fry, W. Guy Hornsby and Michael H. Stone
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Paul A. Moquin: Center of Excellence for Sport Science and Coach Education, Department of Sport, Exercise, Recreation and Kinesiology, East Tennessee State University, Johnson City, TN 37614, USA
Alexander B. Wetmore: Center of Excellence for Sport Science and Coach Education, Department of Sport, Exercise, Recreation and Kinesiology, East Tennessee State University, Johnson City, TN 37614, USA
Kevin M. Carroll: Center of Excellence for Sport Science and Coach Education, Department of Sport, Exercise, Recreation and Kinesiology, East Tennessee State University, Johnson City, TN 37614, USA
Andrew C. Fry: Osness Human Performance Laboratories, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, KS 66045, USA
W. Guy Hornsby: College of Physical Activity and Sport Sciences, West Virginia University, Morgantown, WV 26505, USA
Michael H. Stone: Center of Excellence for Sport Science and Coach Education, Department of Sport, Exercise, Recreation and Kinesiology, East Tennessee State University, Johnson City, TN 37614, USA

IJERPH, 2021, vol. 18, issue 9, 1-13

Abstract: The block periodization training paradigm has been shown to produce enhanced gains in strength and power. The purpose of this study is to assess resistance training induced alterations in lean body mass and cross-sectional area using a block periodization training model among individuals (n = 15) of three differing strength levels (high, moderate and low) based on one repetition maximum back squat relative to body weight. A 3 × 5 mixed-design ANOVA was used to examine within-and between-subject changes in cross-sectional area (CSA), lean body mass (LBM), lean body mass adjusted (LBM adjusted ) and total body water (TBW) over an 11-week resistance training program. LBM adjusted is total body water subtracted from lean body mass. The ANOVA revealed no statistically significant between-group differences in any independent variable ( p > 0.05). Within-group effects showed statistically significant increases in cross-sectional area ( p < 0.001), lean body mass ( p < 0.001), lean body mass adjusted ( p ? 0.001) and total body water ( p < 0.001) from baseline to post intervention: CSA: 32.7 cm 2 ± 8.6; 36.3 cm 2 ± 7.2, LBM: 68.0 kg ± 9.5; 70.6 kg ± 9.4, LBM adjusted : 20.4 kg ± 3.1; 21.0 kg ± 3.3 and TBW: 49.8 kg ± 6.9; 51.7 kg ± 6.9. In conclusion, the results of this study suggest subjects experienced an increase in both lean body mass and total body water, regardless of strength level, over the course of the 11-week block periodized program. Gains in lean body mass and cross-sectional area may be due to edema at the early onset of training.

Keywords: block periodization; lean body mass; total body water; strength; cross-sectional area (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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