Sedentary Behavior and Phase Angle: An Objective Assessment in Physically Active and Inactive Older Adults

Liu Yin Lin, Jiaren Chen, Ting Fu Lai, Yen Yu Chung, Jong Hwan Park, Yih Jin Hu*, Yung Liao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The purpose of the present study was to investigate the associations of the objectively assessed total sedentary behavior (SB) amount and SB patterns with phase angle (PhA) in older populations and to conduct a comparison analysis for those who are physically active (meet 150 min/week) and inactive (less than 150 min/week). During May to August 2023, a convenience sampling was used to recruit older adults (aged ≥ 65 years) living in a community in Taiwan. The total SB amount (minutes/day), SB patterns (including SB bouts and breaks), and physical activity were assessed by a triaxial accelerometer. A multifrequency bioelectrical impedance analyzer (BIA) was used to measure PhA. Multiple linear regression analysis was employed to examine the associations between SB and PhA in the total number of participants and stratified in the physically active and inactive groups. For the whole sample (n = 166; mean age: 72.1 ± 5.5 years), the total SB amount and patterns of SB were not associated with PhA. For those physically active, the total SB amount and SB patterns were not associated with PhA. Among those physically inactive, the total SB amount was negatively related to PhA (B: −0.059, 95% CI: −0.118, 0.000). This study underscores the importance of minimizing the total SB amount in physically inactive older adults, providing evidence for future interventions targeting SB and PhA in this population.

Original languageEnglish
Article number101
Issue number1
Publication statusPublished - 2024 Jan


  • BIA
  • accelerometer
  • cell health
  • nutrition
  • sedentary duration

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics


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