Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis

Background Periodization is an important component of resistance training programs. It is meant to improve adherence to the training regimen, allow for constant progression, help in avoiding plateaus, and reduce occurrence and severity of injuries. Previous findings regarding the effects of differen...

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Main Authors: Jozo Grgic, Pavle Mikulic, Hrvoje Podnar, Zeljko Pedisic
Format: Article
Language:English
Published: PeerJ Inc. 2017-08-01
Series:PeerJ
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Online Access:https://peerj.com/articles/3695.pdf
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author Jozo Grgic
Pavle Mikulic
Hrvoje Podnar
Zeljko Pedisic
author_facet Jozo Grgic
Pavle Mikulic
Hrvoje Podnar
Zeljko Pedisic
author_sort Jozo Grgic
collection DOAJ
description Background Periodization is an important component of resistance training programs. It is meant to improve adherence to the training regimen, allow for constant progression, help in avoiding plateaus, and reduce occurrence and severity of injuries. Previous findings regarding the effects of different periodization models on measures of muscle hypertrophy are equivocal. To provide a more in-depth look at the topic, we undertook a systematic review of the literature and a meta-analysis of intervention trials comparing the effects of linear periodization (LP) and daily undulating periodization (DUP) resistance training programs on muscle hypertrophy. Materials and Methods A comprehensive literature search was conducted through PubMed/MEDLINE, Scopus, Web of Science, SPORTDiscus, Networked Digital Library of Theses and Dissertations (NDLTD) and Open Access Theses and Dissertations (OATD). Results The pooled standardized mean difference (Cohen’s d) from 13 eligible studies for the difference between the periodization models on muscle hypertrophy was −0.02 (95% confidence interval [−0.25, 0.21], p = 0.848). Conclusions The meta-analysis comparing LP and DUP indicated that the effects of the two periodization models on muscle hypertrophy are likely to be similar. However, more research is needed in this area, particularly among trained individuals and clinical populations. Future studies may benefit from using instruments that are more sensitive for detecting changes in muscle mass, such as ultrasound or magnetic resonance imaging.
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spelling doaj.art-f3820464d79d481ead2b02c3abf25f022023-12-03T00:49:50ZengPeerJ Inc.PeerJ2167-83592017-08-015e369510.7717/peerj.3695Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysisJozo Grgic0Pavle Mikulic1Hrvoje Podnar2Zeljko Pedisic3Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, AustraliaUniversity of Zagreb, Faculty of Kinesiology, Zagreb, CroatiaUniversity of Zagreb, Faculty of Kinesiology, Zagreb, CroatiaInstitute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, AustraliaBackground Periodization is an important component of resistance training programs. It is meant to improve adherence to the training regimen, allow for constant progression, help in avoiding plateaus, and reduce occurrence and severity of injuries. Previous findings regarding the effects of different periodization models on measures of muscle hypertrophy are equivocal. To provide a more in-depth look at the topic, we undertook a systematic review of the literature and a meta-analysis of intervention trials comparing the effects of linear periodization (LP) and daily undulating periodization (DUP) resistance training programs on muscle hypertrophy. Materials and Methods A comprehensive literature search was conducted through PubMed/MEDLINE, Scopus, Web of Science, SPORTDiscus, Networked Digital Library of Theses and Dissertations (NDLTD) and Open Access Theses and Dissertations (OATD). Results The pooled standardized mean difference (Cohen’s d) from 13 eligible studies for the difference between the periodization models on muscle hypertrophy was −0.02 (95% confidence interval [−0.25, 0.21], p = 0.848). Conclusions The meta-analysis comparing LP and DUP indicated that the effects of the two periodization models on muscle hypertrophy are likely to be similar. However, more research is needed in this area, particularly among trained individuals and clinical populations. Future studies may benefit from using instruments that are more sensitive for detecting changes in muscle mass, such as ultrasound or magnetic resonance imaging.https://peerj.com/articles/3695.pdfSkeletal muscleCross-sectional areaLean body mass
spellingShingle Jozo Grgic
Pavle Mikulic
Hrvoje Podnar
Zeljko Pedisic
Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis
PeerJ
Skeletal muscle
Cross-sectional area
Lean body mass
title Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis
title_full Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis
title_fullStr Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis
title_full_unstemmed Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis
title_short Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis
title_sort effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy a systematic review and meta analysis
topic Skeletal muscle
Cross-sectional area
Lean body mass
url https://peerj.com/articles/3695.pdf
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