Oxygen Uptake On-Kinetics during Low-Intensity Resistance Exercise: Effect of Exercise Mode and Load

Victor M. Reis, Eduardo B. Neves, Nuno Garrido, Ana Sousa, André L. Carneiro, Carlo Baldari and Tiago Barbosa
Additional contact information
Victor M. Reis: Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal
Eduardo B. Neves: Brazilian Army Research Institute of Physical Fitness, Rio de Janeiro 22291-090, Brazil
Nuno Garrido: Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal
Ana Sousa: Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal
André L. Carneiro: Department of Physical Education & Sports, State University at Montes Claros, Minas Gerais 39401-089, Brazil
Carlo Baldari: eCampus University, 22060 Novedrate, Italy
Tiago Barbosa: Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal

IJERPH, 2019, vol. 16, issue 14, 1-8

Abstract: Oxygen uptake (VO 2 ) kinetics has been analyzed through mathematical modeling of constant work-rate exercise, however, the exponential nature of the VO 2 response in resistance exercise is currently unknown. The present work assessed the VO 2 on-kinetics during two different sub maximal intensities in the inclined bench press and in the seated leg extension exercise. Twelve males (age: 27.2 ± 4.3 years, height: 177 ± 5 cm, body mass: 79.0 ± 10.6 kg and estimated body fat: 11.4 ± 4.1%) involved in recreational resistance exercise randomly performed 4-min transitions from rest to 12% and 24% of 1 repetition maximum each, of inclined bench press (45°) and leg extension exercises. During all testing, expired gases were collected breath-by-breath with a portable gas analyzer (K4b 2 , Cosmed, Italy) and VO 2 on-kinetics were identified using a multi-exponential mathematical model. Leg extension exercise exhibited a higher R-square, compared with inclined bench press, but no differences were found in-between exercises for the VO 2 kinetics parameters. VO 2 on-kinetics seems to be more sensitive to muscle related parameters (upper vs. lower body exercise) and less to small load variations in the resistance exercise. The absence of a true slow component indicates that is possible to calculate low-intensity resistance exercise energy cost based solely on VO 2 measurements.

Keywords: VO 2 kinetics; resistance exercise; energy cost (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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