Effect of habitual exercise on urinary liver-type fatty acid-binding protein levels in middle-aged and older adults

K. Kosaki, A. Kamijo-Ikemori, T. Sugaya, K. Tanahashi, Y. Sawano, N. Akazawa, S. G. Ra, K. Kimura, Y. Shibagaki, S. Maeda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The purpose of this study was to examine the effect of habitual exercise on urinary liver-type fatty acid-binding protein (L-FABP), which can reflect the degree of various stresses on renal proximal tubule related to the progression of renal disease, in middle-aged and older adults. Cross-sectional and interventional approaches were used to comprehensively achieve this purpose. In the cross-sectional study, we investigated the relationship between physical activity levels and urinary L-FABP levels in 130 middle-aged and older adults. In the interventional study, subjects (n=31) were divided into two groups: exercise (n=19) and control group (n=12), whereby we examined the effects of 12-week aerobic exercise training on urinary L-FABP levels. The cross-sectional study showed that the urinary L-FABP levels were significantly lower in the higher physical activity group than in the lower physical activity group (P<.05). In the interventional study, 12-week aerobic exercise training significantly decreased urinary L-FABP levels (P<.01). Furthermore, the relative changes in urinary L-FABP levels were significantly correlated with the relative changes in physical activity levels and mean arterial pressure after intervention (r=−.374 and r=.530, respectively). Our results revealed that the urinary L-FABP levels were lower in the higher physical activity individuals, and aerobic exercise training decreased urinary L-FABP levels. These results suggest that habitual exercise appears to be associated with a decrease in the degree of several stresses on renal proximal tubule and to be beneficial for kidney health in middle-aged and older adults.

Original languageEnglish
Pages (from-to)152-160
Number of pages9
JournalScandinavian Journal of Medicine and Science in Sports
Volume28
Issue number1
DOIs
Publication statusPublished - 2018 Jan
Externally publishedYes

Keywords

  • aerobic exercise training
  • exercise habituation
  • kidney
  • renoprotective effect
  • tubular biomarker

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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