Energy cost and cardiovascular response to upper and lower limb rhythmic exercise with different equipments in normal-weight and severely obese individuals

C. L. Lafortuna, S. Chiavaroli, F. Rastelli, M. De Angelis, F. Agosti, A. Patrizi, A. Sartorio

Research output: Contribution to journalArticle

Abstract

Aims: The purpose of the study was to assess energy expenditure and cardiovascular response to rhythmic activity with 6 machines exercising different arm and leg muscle groups in normal-weight (NW) and obese (OB) individuals. Methods: In 16 extremely OB subjects and 15 NW controls, oxygen uptake (VO2), heart rate (HR), blood lactate (LA) concentration and ratings of perceived exertion (RPE) were determined during submaximal rhythmic exercise at different intensities obtained by increasing the frequency of the movement (FOM) with each machine. Peak VO2 (VO2p) for each equipment was determined with incremental tests up to exhaustion, whereas maximal VO2 was estimated at cycle ergometer. Results: Net energy cost (Enet) of exercise increased (p2p were attained with lower limbs than with upper limbs, in both NW (p2 (relative to maximal), HR, LA, and RPE were similar in NW and OB but higher during arm than leg activity (p2 (relative to VO 2p) no difference was detected. Conclusion: Enet of rhythmic exercise is higher in OB than NW with machines requiring wide displacement of large body segments. For both NW and OB, physiological responses and RPE are importantly affected by the relative activation of involved muscles. LA concentration is an important determinant of RPE, independent of the limb in activity.

Original languageEnglish
Pages (from-to)131-139
Number of pages9
JournalJournal of Endocrinological Investigation
Volume34
Issue number2
DOIs
Publication statusPublished - Feb 2011

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Keywords

  • Arm and leg exercise
  • Obesity
  • Physical activity

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

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