Acute and Chronic Effects of Accentuated Eccentric Loading vs. Constant-Load Resistance Training: A Systematic Review and Meta-analysis
Abstract
Background: Accentuated eccentric loading (AEL) is a resistance training (RT) method applying greater eccentric- than concentric-phase load to intensify the training stimulus; however, despite its common use, a comprehensive and quantitative review remains lacking.
Objective: The aim was to compare acute responses and chronic adaptations between AEL and constant-load RT, and examine whether effects vary by AEL protocol (submaximal, maximal, supramaximal).
Methods: PubMed, Web of Science, Embase, and EBSCO were searched from inception through July 3, 2024; eligible English-language studies were included. Pooled and subgroup meta-analyses were performed using random-effects models.
Results: Forty-nine studies involving 773 participants were included. Although considerable variance exists in certain outcomes, our estimated effects suggest that, compared to constant-load RT, AEL results in (1) similar acute responses in loads lifted during the concentric phase (standardized mean difference [SMD] = - 0.16; p = 0.48), mechanical performance at submaximal loads during the concentric phase (SMD = - 0.07; p = 0.37), countermovement jump height both immediately (SMD = - 0.06; p = 0.86) and delayed (SMD = - 0.23; p = 0.44) post-intervention, maximal voluntary isometric force immediately post-intervention (SMD = 0.03; p = 0.89), blood lactate concentration during the intervention (SMD = - 0.06; p = 0.78), testosterone concentration immediately post-intervention (SMD = 0.68; p = 0.15),…
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 773 participants or records.
Read the paper
Related studies
- Biportal endoscopic versus microscopic lumbar decompressive laminectomy in patients with spinal stenosis: A randomized controlled trial
- A whey protein-based multi-ingredient nutritional supplement stimulates gains in lean body mass and strength in healthy older men: A randomized controlled trial
- Supplement-based nutritional strategies to tackle frailty: A multifactorial, double-blind, randomized placebo-controlled trial
- A randomized, double-blind, placebo-controlled, proof-of-concept trial of creatine monohydrate as adjunctive treatment for bipolar depression
- Creatine supplementation (3 g/day) and bone health in older women: a 2-year, randomized, placebo-controlled trial
- A Multi-Ingredient Nutritional Supplement in Combination With Resistance Exercise and High-Intensity Interval Training Improves Cognitive Function and Increases N-3 Index in Healthy Older Men: A Randomized Controlled Trial
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.