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February 2, 2026AIDS0 citations

Influence of the low-frequency extension filter on accelerometer-based activity measurements in people with HIV: a comparative analysis

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ASAndre P. dos SantosVOVitor H.F. OliveiraLCLloyd Curtis

Key Points

  • The aim is to assess the impact of low-frequency extension filters on physical activity measurements in people with HIV.
  • Compared ActiGraph low-frequency extension and normal filters on physical activity metrics.
  • Measured data from 492 individuals with HIV over 7-10 days.
  • Analyzed sedentary bouts, light physical activity, MVPA, and steps using Wilcoxon and Quade's ANCOVA.
  • LFE significantly increased MVPA from 162.4 to 213.5 minutes per week.
  • LFE group recorded an average of 11,239 steps per day compared to 4,853 steps per day with normal filters (P < 0.001).
  • Minimal impact observed on sedentary bouts and light physical activity.

Abstract

Comparing ActiGraph Low-Frequency Extension (LFE) vs. normal filters on accelerometer-derived physical activity and sedentary behavior in 492 people with HIV. Participants wore ActiGraph 7–10 days; metrics (sedentary bouts, light physical activity, MVPA, steps) analyzed with both filters using Wilcoxon and Quade's ANCOVA. LFE increased MVPA (213.5 vs. 162.4 min/week) and steps (11 239 vs. 4853/day; P < 0.001) with minimal effects on sedentary bouts/light physical activity; effects were consistent across subgroups, indicating caution when comparing studies with different filters.

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Cite This Study

Santos et al. (2026) studied this question.

synapsesocial.com/papers/6980fc37c1c9540dea80e0dehttps://doi.org/10.1097/qad.0000000000004391
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