Weight's effect on impact acceleration in time and frequency domain in recreational runners.
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Where this comes from
- Record sourced from PubMed, PMID 42105412.
- Also identified by DOI 10.1016/j.jbiomech.2026.113345.
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Abstract
Running with load is common for trail and ultra-trail runners and can affect running biomechanics. However, there is a lack of literature about the interaction between cadence and additional load while running. This study investigates the effects of added weight and cadence on tri-axial impact accelerations and spatiotemporal variables in time and frequency domain analysis. Twenty recreational runners participated in a 30' treadmill protocol at 2.78 m/s under three weight conditions: no added weight, 5%, and 10% of body weight (BW), and running with two cadence conditions: Free and Fixed at 165 steps per minute (spm). A repeated measures ANOVA was performed to assess the effects of weight and cadence on dependent variables. Added weight significantly increased (p < 0.05) cadence and reduced stride length (SL). In time domain, weight increased (p < 0.05) vertical shock attenuation (VSA) and vertical ratio (VRt), while in frequency domain increased frequency of peak power in the low-frequency range in the vertical (V) and mediolateral (ML) axes (p < 0.05), with the anteroposterior (AP) axis being the least affected. While added weight influenced cadence and SL, and acceleration variables in the three axes, peak power in the high frequency range and acceleration peaks remained stable, suggesting a nuanced interaction between weight and cadence.