Acute Effects of Velocity-Monitored Resistance Training With 10% and 20% Velocity Loss in Hemodynamic, Metabolic, and Mechanical Parameters in Older Adults.

Authors

Tiago Sousa, Ana Pereira, Diogo Luís Marques, Nuno Fonseca, Luís Brandão Faíl, Mafalda Pamplona Pinto, Ana Ruivo Alves, António Carlos Sousa, Mário Cardoso Marques

Published in

Journal of aging and physical activity. Pages 1-11. Jul 24, 2026. Epub Jul 24, 2026.

Abstract

Velocity-monitored resistance training (RT) marked a significant advancement in the RT paradigm by providing precise information about the loads applied.
This study compared the acute effects of velocity-monitored RT with 10% versus 20% velocity loss (VL) on hemodynamic, metabolic, and mechanical parameters in older adults.
Twenty-nine older adults (81 ± 8 years) randomly performed two training protocols separated by a 1-week rest period: three sets of 10% VL (VL10) or 20% VL (VL20) at 60% of one-repetition maximum in chest and leg press exercises. Before and immediately after each protocol, we collected the systolic and diastolic blood pressure, heart rate, and blood lactate. Furthermore, we recorded the fastest velocity and peak power reached against the same weight before and after each resistance exercise.
The analysis revealed significant differences between protocols in VL (∼12% vs. ∼21%, p < .001) and total repetitions (∼12 vs. ∼24, p < .001). Furthermore, in comparison with the VL10 protocol, the VL20 elicited a higher increase in blood lactate (29% vs. 11%, p < .001) and a reduction in chest press peak power (-4% vs. +3%, p < .001) and chest press velocity (-4% vs. +2%, p < .001). There were no differences between protocols on systolic and diastolic blood pressure and heart rate.
This study shows that a VL20 magnitude induces higher metabolic and mechanical stress than a VL10 magnitude, whereas the latter can preserve mechanical performance in older adults.
Implementing velocity-monitored RT ensured regulation of the training load, uniform effort, and objective assessment of training effect.

PMID:
42501973
Bibliographic data and abstract were imported from PubMed on 26 Jul 2026.

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