Acute post-exercise oxygen uptake, hormone and plasma metabolite response in obese men

S. Lanzi, F. Codecasa, M. Cornacchia, S. Maestrini, A. Salvadori, P. Fanari, A. Brunani, D. Malatesta

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to compare oxygen uptake (V̇O2), hormone and plasma metabolite responses during the 30min after submaximal incremental exercise (Incr) performed at the same relative/absolute exercise intensity and duration in lean (L) and obese (O) men. Eight L and 8 O men (BMI: 22.9±0.4; 37.2±1.8kg·m-2) completed Incr and were then seated for 30min. V̇O2 was monitored during the first 10min and from the 25-30th minutes of recovery. Blood samples were drawn for the determination of hormone (catecholamines, insulin) and plasma metabolite (NEFA, glycerol) concentrations. Excess post-exercise oxygen consumption (EPOC) magnitude during the first 10min was similar in O and in L (3.5±0.4; 3.4±0.3 liters, respectively, p=0.86). When normalized to percent change (V̇O2END=100%), % V̇O2END during recovery was significantly higher from 90-120s in O than in L (p≤0.04). There were no significant differences in catecholamines (p≥0.24), whereas insulin was significantly higher in O than in L during recovery (p=0.01). The time-course of glycerol was similar from 10-30min of recovery (-42% for L; -41% for O, p=0.85), whereas significantly different patterns of NEFA were found from 10-30min of recovery between groups (-18% for L; +8% for O, p=0.03). Despite similar EPOC, a difference in V̇O2 modulation between groups was observed, likely due to faster initial rates of V̇O2 decline in L than in O. The different patterns of NEFA between groups may suggest a lower NEFA reesterification during recovery in O, which was not involved in the rapid EPOC component.

Original languageEnglish
Pages (from-to)521-527
Number of pages7
JournalHormone and Metabolic Research
Volume46
Issue number7
DOIs
Publication statusPublished - 2014

Keywords

  • energy expenditure
  • indirect calorimetry
  • physical activity
  • weight management

ASJC Scopus subject areas

  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical
  • Endocrinology, Diabetes and Metabolism
  • Medicine(all)

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