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A body-fixed-sensor-based analysis of stair ascent and sit-to-stand to detect age-related differences in leg-extensor power

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  • Evelien Van Roie
  • Stijn Van Driessche
  • Bas Huijben
  • Remco Baggen
  • Rob C van Lummel
  • Christophe Delecluse

Abstract

Human ageing is accompanied by a progressive decline in leg-extensor power (LEP). LEP is typically measured with specialized and expensive equipment, which limits the large-scale applicability. Previously, sensor-based trunk kinematics have been used to estimate the vertical power required to elevate the body’s center of mass during functional tests, but the link with LEP and age remains to be investigated. Therefore, we investigated whether a body-fixed sensor-based analysis of power during stair ascent (SA) and sit-to-stand (STS) is positively related to LEP and whether its ability to detect age-related declines is similar. In addition, the effect of load during SA and STS was investigated. 98 adults (20–70 years) performed a leg press to assess LEP, SA and 5-repetition STS tests. In SA and STS, two conditions were tested: unloaded and loaded (+10% body mass). An inertial measurement unit was used to analyze (sub)-durations and vertical power. SA and STS power were more related to LEP than duration parameters (i.e. 0.80–0.81 for power and -0.41 –-0.66 for duration parameters, p

Suggested Citation

  • Evelien Van Roie & Stijn Van Driessche & Bas Huijben & Remco Baggen & Rob C van Lummel & Christophe Delecluse, 2019. "A body-fixed-sensor-based analysis of stair ascent and sit-to-stand to detect age-related differences in leg-extensor power," PLOS ONE, Public Library of Science, vol. 14(1), pages 1-13, January.
    • Handle: RePEc:plo:pone00:0210653
    DOI: 10.1371/journal.pone.0210653
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