Relation between changes in serum hypoxanthine levels by exercise and daily physical activity in the elderly

Shyuko Saiki, Tokutaro Sato, Masao Hiwatari, Taku Harada, Masao Oouchi, Masahiro Kamimoto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Effect of exercise at mild intensity on the serum levels of hypoxanthine was studied in eleven healthy elderly subjects. They were divided into the active and sedentary groups according to their daily physical activity. They performed exercise testing to walk for 5 minutes keeping heart rate at approximately 70% of the maximum heart rate. Mean intensity of exercise estimated according to Karvonen's formula in the active or sedentary group was 41.8±9.6% or 34.1± 6.1%, respectively. In the sedentary group, the serum hypoxanthine levels at 10 minutes after completion of walk load was significantly higher than that before exercise. Changes in the serum hypoxanthine levels in the active and sedentary groups were -0.97±1.36 and 0.80±0.57 μmol/liter, respectively (p < 0.05). This result suggests that mild intensity exercise increases the serum hypoxanthine concentration in the elderly leading inactive daily life, and physical activity suppresses an increase in the serum hypoxanthine levels by mild exercise.

Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalTohoku Journal of Experimental Medicine
Volume188
Issue number1
DOIs
Publication statusPublished - 1999 May

Keywords

  • Exercise
  • Hypoxanthine
  • Physical activity

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Fingerprint Dive into the research topics of 'Relation between changes in serum hypoxanthine levels by exercise and daily physical activity in the elderly'. Together they form a unique fingerprint.

Cite this