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Effects of Combined Resistance Training and Weightlifting on Motor Skill Performance of Adolescent Male Athletes

Pichardo, Andrew W.1; Oliver, Jon L.1,2; Harrison, Craig B.1; Maulder, Peter S.1,3; Lloyd, Rhodri S.1,2,3; Kandoi, Rohan3

The Journal of Strength & Conditioning Research: March 13, 2019 - Volume Publish Ahead of Print - Issue - p
doi: 10.1519/JSC.0000000000003108
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Pichardo, AW, Oliver, JL, Harrison, CB, Maulder, PS, Lloyd, RS, and Kandoi, R. Effects of combined resistance training and weightlifting on motor skill performance of adolescent male athletes. J Strength Cond Res XX(X): 000–000, 2019—Resistance training and weightlifting are regarded as safe and effective training methods for youth. However, no studies have examined the effects of a year-long resistance training program using weightlifting movements on strength, speed, or power. Therefore, the purpose of this study was to determine the long-term effects of combined resistance training (traditional strength training + plyometrics) with or without weightlifting movements on motor skill performance of adolescent males. Fifty-nine males aged 12–14 years were matched by maturity and allocated to a combined resistance training or a combined resistance training with weightlifting group. Each group completed 28 total weeks of training over an academic year. Pre-, mid- (14 weeks of training), and post-training (28 weeks of training) tests included the resistance training skills battery quotient (RTSQ), absolute isometric midthigh pull peak force (IMTPABS) and ratio-scaled isometric midthigh pull peak force (IMTPREL), countermovement jump, horizontal jump, and 10-, 20-, and 30-m sprint. Repeated-measure analysis of variance revealed that there were no significant between-group responses, but all variables improved significantly within-group. Both groups made small-moderate improvements in RTSQ, IMTPABS, and IMTPREL after the first 14 training weeks (d = 0.45–0.86), whereas small-moderate improvements in lower body power, upper body power, and speed were made after the second 14 training weeks (d = 0.30–0.95). Both groups made small-moderate improvements in all performance variables after 28 weeks of training. These findings highlight the importance of establishing movement competency and strength as a foundation for the subsequent development of power. Furthermore, these findings may help practitioners understand the time course of certain adaptations following a long-term periodized plan for adolescent males.

1Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand;

2Youth Physical Development Center, School of Sport, Cardiff Metropolitan University, Cardiff, Wales, United Kingdom; and

3Center for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand

Address correspondence to Andrew W. Pichardo, andrew.pichardo6@gmail.com.

Copyright © 2019 by the National Strength & Conditioning Association.