Serum leptin during recovery following maximal incremental and prolonged exercise

M. C. Torjman, A. Zafeiridis, A. M. Paolone, C. Wilkerson, Robert Considine

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

This study investigated the delayed circulating leptin response to maximal and prolonged treadmill-exercise. Six healthy untrained males performed three sessions after an overnight fast: control, maximal exercise, and prolonged exercise at 50% of maximal oxygen consumption. Blood samples were collected prior to exercise, at the end of exercise, and at 60, 120, 180, and 240 min following exercise and control sessions. Blood samples were analyzed for serum leptin, insulin, glucose, free fatty acids, and glycerol. Hemoglobin and hematocrit were measured to correct for plasma volume changes. Resting energy expenditure (REE) and body fat (BF) were also assessed. Immediately at the end of maximal and prolonged exercise, and during the 4 hours of recovery, serum leptin levels did not change significantly compared to their respective baseline values. At 240 min of recovery serum leptin decreased 7% and 9% (p > 0.05) from the baseline in the maximal and prolonged sessions, respectively. In the control experiment serum leptin decreased 27% from the baseline at 240 min of the recovery (p <0.05). No significant differences were found in leptin values between the control and exercise sessions. Control serum leptin was positively correlated (p <0.05) to BF (r = 0.88) and glucose (r = 0.96), and negatively correlated to REE (r = -0.81). In conclusion, maximal or prolonged exercise do not appear to have an influence on circulating serum leptin in the delayed (4 hr) post exercise recovery period.

Original languageEnglish (US)
Pages (from-to)444-450
Number of pages7
JournalInternational Journal of Sports Medicine
Volume20
Issue number7
DOIs
StatePublished - 1999
Externally publishedYes

Fingerprint

Leptin
Serum
Energy Metabolism
Adipose Tissue
Glucose
Plasma Volume
Hematocrit
Nonesterified Fatty Acids
Oxygen Consumption
Glycerol
Hemoglobins
Insulin

Keywords

  • Body fat
  • Exercise
  • Free fatty acids
  • Glucose
  • Glycerol
  • Insulin
  • Leptin

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Serum leptin during recovery following maximal incremental and prolonged exercise. / Torjman, M. C.; Zafeiridis, A.; Paolone, A. M.; Wilkerson, C.; Considine, Robert.

In: International Journal of Sports Medicine, Vol. 20, No. 7, 1999, p. 444-450.

Research output: Contribution to journalArticle

Torjman, M. C. ; Zafeiridis, A. ; Paolone, A. M. ; Wilkerson, C. ; Considine, Robert. / Serum leptin during recovery following maximal incremental and prolonged exercise. In: International Journal of Sports Medicine. 1999 ; Vol. 20, No. 7. pp. 444-450.
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