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This paper is in the following e-collection/theme issue:

Physical Activity for Older People (492) mHealth for Data Collection and Research (1768) Fitness Trackers and Smart Pedometers/Accelerometers (803) Information and Patient Education on Healthy Aging (118) Innovations and Technology for Physical Activity Education (1075)

Published on in Vol 9 (2026)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/90158, first published .
Seniors exercise class with weights and resistance bands.

Domain-Specific Associations of Physical Activity With Phase Angle and Extracellular Water–to–Total Body Water Ratio in Middle-Aged or Older Adults: Cross-Sectional Study

Domain-Specific Associations of Physical Activity With Phase Angle and Extracellular Water–to–Total Body Water Ratio in Middle-Aged or Older Adults: Cross-Sectional Study

Authors of this article:

Seong-Uk Baek1 Author Orcid Image ;   Jin-Ha Yoon2, 3, 4 Author Orcid Image
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Seong-Uk Baek   1 , MD ;   Jin-Ha Yoon   2, 3, 4 , PHD

1 Graduate School, Yonsei University College of Medicine, Seoul, Seoul, Republic of Korea

2 Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea

3 The Institute for Occupational Health, Yonsei University College of Medicine, Seoul, Republic of Korea

4 Institute for Innovation in Digital Healthcare, Yonsei University Health System, Seoul, Republic of Korea

Corresponding Author:

  • Jin-Ha Yoon, PHD
  • Department of Preventive Medicine
  • Yonsei University College of Medicine
  • 50-1, Yonsei-ro, Seodaemungu
  • Seoul 03722
  • Republic of Korea
  • Phone: 82 010-34118-697
  • Email: posososo@naver.com