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Enhancing muscular qualities in untrained women: linear versus undulating periodization

Kok, Lian Yee and Hamer, Peter W. and Bishop, David J. (2009) Enhancing muscular qualities in untrained women: linear versus undulating periodization. Medicine and Science in Sports and Exercise, 41 (9). pp. 1797-1807. ISSN 0195-9131

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Official URL: http://dx.doi.org/10.1249/MSS.0b013e3181a154f3

Abstract

This study compared linear (LP) and undulating periodization (UP) on strength changes in untrained women when total workload and average training intensity were matched by the end of training. METHODS: Twenty females (20 +/- 2 yr) were conditioned (3 wk) and assessed for one-repetition maximum squat (1RMSQ) and bench press (1RMBP) before being assigned to LP or UP training (9 wk), with training performed at 3 d.wk. Maximal strength, average power output during squat jumps with countermovement (SQJpwr) and bench press throws (BPTpwr), body mass, limb girth, and muscle cross-sectional area (CSA) were assessed at baseline (T1) and after every 3 wk (T2, T3, and T4) to differentiate the efficacy of LP and UP training. RESULTS: Both groups improved significantly (P < 0.05) in 1RMSQ (LP 34.8%, UP 41.2%), 1RMBP (LP 21.8%, UP 28.3%), SQJpwr (LP 10.4%, UP 9.5%), BPTpwr (LP 11.1%, UP 13.8%), arm girth (LP 1.14%, UP 1.73%), and thigh girth (LP 1.58%, UP 1.99%), with no significant difference between them. Muscle CSA for the LP group increased significantly at T2 before maintaining similar hypertrophic responses until T4, whereas the UP group recorded significant increments from T1 to T2 and T2 to T3, before stabilizing between T3 and T4. Pooled CSA increase was higher than previously found (6.8% at T2, 11.3% at T3, and 11.8% at T4). CONCLUSIONS: The comparison of LP and UP training with matched volume load and intensity suggests that both programs were equally adept in improving different strength qualities in active but untrained women. In addition, muscle hypertrophic responses were larger and occurred earlier than previously reported.

Item Type:Article
Keyword:Training Program, resistance training, strength, characteristics, hypertrophy
Faculty or Institute:Faculty of Educational Studies
Publisher:The American College of Sports Medicine
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1249/MSS.0b013e3181a154f3
ID Code:7433
Deposited By: Fazlin Hj. Shamsudin
Deposited On:25 Jun 2010 19:20
Last Modified:25 Jun 2010 19:23

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