{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:42:21Z","timestamp":1760240541360,"version":"build-2065373602"},"reference-count":32,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2019,7,15]],"date-time":"2019-07-15T00:00:00Z","timestamp":1563148800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Oxygen uptake (VO2) kinetics has been analyzed through mathematical modeling of constant work-rate exercise, however, the exponential nature of the VO2 response in resistance exercise is currently unknown. The present work assessed the VO2 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 \u00b1 4.3 years, height: 177 \u00b1 5 cm, body mass: 79.0 \u00b1 10.6 kg and estimated body fat: 11.4 \u00b1 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\u00b0) and leg extension exercises. During all testing, expired gases were collected breath-by-breath with a portable gas analyzer (K4b2, Cosmed, Italy) and VO2 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 VO2 kinetics parameters. VO2 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 VO2 measurements.<\/jats:p>","DOI":"10.3390\/ijerph16142524","type":"journal-article","created":{"date-parts":[[2019,7,16]],"date-time":"2019-07-16T02:23:16Z","timestamp":1563243796000},"page":"2524","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Oxygen Uptake On-Kinetics during Low-Intensity Resistance Exercise: Effect of Exercise Mode and Load"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4996-1414","authenticated-orcid":false,"given":"Victor M.","family":"Reis","sequence":"first","affiliation":[{"name":"Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4507-6562","authenticated-orcid":false,"given":"Eduardo B.","family":"Neves","sequence":"additional","affiliation":[{"name":"Brazilian Army Research Institute of Physical Fitness, Rio de Janeiro 22291-090, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8105-7580","authenticated-orcid":false,"given":"Nuno","family":"Garrido","sequence":"additional","affiliation":[{"name":"Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana","family":"Sousa","sequence":"additional","affiliation":[{"name":"Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal"},{"name":"Department of Sciences of Physical Education &amp; Sports, University Institute of Maia, ISMAI, 4475-690 Maia, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8657-2792","authenticated-orcid":false,"given":"Andr\u00e9 L.","family":"Carneiro","sequence":"additional","affiliation":[{"name":"Department of Physical Education &amp; Sports, State University at Montes Claros, Minas Gerais 39401-089, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6227-3571","authenticated-orcid":false,"given":"Carlo","family":"Baldari","sequence":"additional","affiliation":[{"name":"eCampus University, 22060 Novedrate, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tiago","family":"Barbosa","sequence":"additional","affiliation":[{"name":"Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, 5000-103 Vila Real, Portugal"},{"name":"Department of Physical Education &amp; Sports Science, Nanyang Technologic University, Singapore 637616, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2118","DOI":"10.1152\/jappl.1998.85.6.2118","article-title":"The VO2 slow component for severe exercise depends on type of exercise and is not correlated with time to fatigue","volume":"85","author":"Billat","year":"1998","journal-title":"J. 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