Mixed
Using a single, universal velocity loss (VL) threshold to prescribe resistance training volume is unreliable and likely leads to variable acute physiological responses and divergent long-term adaptations because the volume of work completed at a given VL threshold varies significantly between individuals.
Do not use a single velocity loss threshold (like 20% or 30%) for everyone in your gym or program. The amount of work you do to hit that speed drop varies wildly between men and women, and between strong and less strong individuals. To ensure consistent training effects, you must individualize velocity loss targets based on sex, training status, and personality traits like emotional stability.
Using the same VL thresholds for all individuals, while assuming generalisability of the stimuli applied, would likely lead to variable acute physiological responses to RT and divergent neuromuscular adaptations over long term.
Why this rating
Cross-sectional test-retest study with 46 resistance-trained participants, using rigorous statistical methods (Bland-Altman, mixed-effects models), but limited to back-squat and short-term reliability.
Source
One Velocity Loss Threshold Does Not Fit All: Consideration of Sex, Training Status, History, and Personality Traits When Monitoring and Controlling Fatigue During Resistance Training
Ivan Jukić et al. · Sports Medicine - Open · 2023
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