{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T15:02:37Z","timestamp":1775746957128,"version":"3.50.1"},"reference-count":35,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,9,23]],"date-time":"2022-09-23T00:00:00Z","timestamp":1663891200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/147608\/2019 UIDB\/04045\/2020 UIDB\/50008\/2020"],"award-info":[{"award-number":["SFRH\/BD\/147608\/2019 UIDB\/04045\/2020 UIDB\/50008\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Physiol."],"abstract":"<jats:p>Identifying the relative loads (%1RM) that maximize power output (P<jats:sub>max-load<\/jats:sub>) in resistance exercises can help design interventions to optimize muscle power in older adults. Moreover, examining the maximal mean power (MP<jats:sub>max<\/jats:sub>) and peak power (PP<jats:sub>max<\/jats:sub>) values (Watts) would allow an understanding of their differences and associations with functionality markers in older adults. Therefore, this research aimed to 1) analyze the load-mean and peak power relationships in the leg press and chest press in older adults, 2) examine the differences between mean P<jats:sub>max-load<\/jats:sub> (MP<jats:sub>max-load<\/jats:sub>) and peak P<jats:sub>max-load<\/jats:sub> (PP<jats:sub>max-load<\/jats:sub>) within resistance exercises, 3) identify the differences between resistance exercises in MP<jats:sub>max-load<\/jats:sub> and PP<jats:sub>max-load<\/jats:sub>, and 4) explore the associations between MP<jats:sub>max<\/jats:sub> and PP<jats:sub>max<\/jats:sub> in the leg press and chest press with functional capacity indicators. Thirty-two older adults (79.3 \u00b1 7.3\u00a0years) performed the following tests: medicine ball throw (MBT), five-repetition sit-to-stand (STS), 10-m walking (10\u00a0W), and a progressive loading test in the leg press and chest press. Quadratic regressions analyzed 1) the load-mean and peak power relationships and identified the MP<jats:sub>max-load<\/jats:sub>, MP<jats:sub>max<\/jats:sub>, PP<jats:sub>max-load<\/jats:sub>, and PP<jats:sub>max<\/jats:sub> in both exercises, 2) the associations between MP<jats:sub>max<\/jats:sub> and PP<jats:sub>max<\/jats:sub> in the chest press with MBT, and 3) the associations between MP<jats:sub>max<\/jats:sub> and PP<jats:sub>max<\/jats:sub> in the leg press with STS<jats:sub>power<\/jats:sub> and 10W<jats:sub>velocity<\/jats:sub>. In the leg press, the MP<jats:sub>max-load<\/jats:sub> was \u223c66% 1RM, and the PP<jats:sub>max-load<\/jats:sub> was \u223c62% 1RM, both for women and men (<jats:italic>p<\/jats:italic> &amp;gt; 0.05). In the chest press, the MP<jats:sub>max-load<\/jats:sub> was \u223c62% 1RM, and the PP<jats:sub>max-load<\/jats:sub> was \u223c56% 1RM, both for women and men (<jats:italic>p<\/jats:italic> &amp;gt; 0.05). There were differences between MP<jats:sub>max-load<\/jats:sub> and PP<jats:sub>max-load<\/jats:sub> within exercises (<jats:italic>p<\/jats:italic> &amp;lt; 0.01) and differences between exercises in MP<jats:sub>max-load<\/jats:sub> and PP<jats:sub>max-load<\/jats:sub> (<jats:italic>p<\/jats:italic> &amp;lt; 0.01). The MP<jats:sub>max<\/jats:sub> and PP<jats:sub>max<\/jats:sub> in the chest press explained \u223c48% and \u223c52% of the MBT-1\u00a0kg and MBT-3\u00a0kg variance, respectively. In the leg press, the MP<jats:sub>max<\/jats:sub> and PP<jats:sub>max<\/jats:sub> explained \u223c59% of STS<jats:sub>power<\/jats:sub> variance; however, both variables could not explain the 10W<jats:sub>velocity<\/jats:sub> performance (<jats:italic>r<\/jats:italic><jats:sup><jats:italic>2<\/jats:italic><\/jats:sup> \u223c 0.02). This study shows that the P<jats:sub>max-load<\/jats:sub> is similar between sexes, is resistance exercise-specific, and varies within exercises depending on the mechanical power variable used in older adults. Furthermore, this research demonstrates the influence of the MBT as an upper-limb power marker in older adults.<\/jats:p>","DOI":"10.3389\/fphys.2022.1007772","type":"journal-article","created":{"date-parts":[[2022,9,23]],"date-time":"2022-09-23T13:38:50Z","timestamp":1663940330000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Load-power relationship in older adults: The influence of maximal mean and peak power values and their associations with lower and upper-limb functional capacity"],"prefix":"10.3389","volume":"13","author":[{"given":"Diogo Lu\u00eds","family":"Marques","sequence":"first","affiliation":[]},{"given":"Henrique Pereira","family":"Neiva","sequence":"additional","affiliation":[]},{"given":"Daniel Almeida","family":"Marinho","sequence":"additional","affiliation":[]},{"given":"Ivan Miguel","family":"Pires","sequence":"additional","affiliation":[]},{"given":"C\u00e9lia","family":"Nunes","sequence":"additional","affiliation":[]},{"given":"M\u00e1rio Cardoso","family":"Marques","sequence":"additional","affiliation":[]}],"member":"1965","published-online":{"date-parts":[[2022,9,23]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"1567","DOI":"10.1097\/00005768-200109000-00021","article-title":"Progressive strength training in sedentary, older African American women","volume":"33","author":"Adams","year":"2001","journal-title":"Med. 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