Increase of glucose uptake in human bone marrow with increasing exercise intensity

Ilkka Heinonen, Jukka Kemppainen, Toshihiko Fujimoto, Juhani Knuuti, Kari K. Kalliokoski

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Human bone marrow is a metabolically active tissue that responds to acute low-intensity exercise by having increased glucose uptake (GU). Here, the authors studied whether bone marrow GU increases more with increased exercise intensities. Femoral bone marrow GU was measured using positron emission tomography and [18F]-fluorodeoxyglucose in six healthy young men during cycling at intensities of 30% (low), 55% (moderate), and 75% (high) of maximal oxygen consumption on three separate days. Bone marrow GU at low was 17.2 μmol·kg−1·min−1 (range 9.0-25.4) and increased significantly (p = .003) at moderate (31.2 μmol·kg−1·min−1, 22.9-39.4) but was not significant from moderate to high (37.4 μmol·kg−1·min−1, 29.0-45.7, p = .26). Furthermore, the ratio between bone and muscle GU decreased from low to moderate exercise intensity (p < .01) but not (p = .99) from moderate to high exercise intensity. In conclusion, these results show that although the increase is not as large as observed in exercising skeletal muscle, GU in femoral bone marrow increases with increasing exercise intensity at least from low- to moderate-intensity effort, which may be important for bone and whole-body metabolic health.

Original languageEnglish
Pages (from-to)254-258
Number of pages5
JournalInternational journal of sport nutrition and exercise metabolism
Volume29
Issue number3
DOIs
Publication statusPublished - 2019 May

Keywords

  • Humans
  • Metabolism
  • PET

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Orthopedics and Sports Medicine
  • Nutrition and Dietetics

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