{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,23]],"date-time":"2026-02-23T23:26:29Z","timestamp":1771889189258,"version":"3.50.1"},"reference-count":37,"publisher":"Canadian Science Publishing","issue":"5","license":[{"start":{"date-parts":[[2019,5,1]],"date-time":"2019-05-01T00:00:00Z","timestamp":1556668800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.nrcresearchpress.com\/page\/about\/CorporateTextAndDataMining"}],"content-domain":{"domain":["cdnsciencepub.com"],"crossmark-restriction":false},"short-container-title":["Appl. Physiol. Nutr. Metab."],"published-print":{"date-parts":[[2019,5]]},"abstract":"<jats:p> The current study investigated whether a single bout of concurrent exercise (Ex Rx) at Third Age Academies (TAAs) in Rio de Janeiro City meets the American College of Sports Medicine (ACSM) guidelines for energy cost and metabolic intensity in older adults. Nine subjects (5 males and 4 females, 63\u201380 years of age) visited the laboratory for clinical screening and for anthropometrical, resting, and maximal oxygen uptake assessments. Thereafter, subjects performed an Ex Rx circuit consisting of a single circuit alternating aerobic and resistance exercises with outdoor exercise equipment using body mass as the load (total of 9 exercises, 1\u20132 sets of 15 repetitions). Expired gases were collected via a metabolic cart during exercise bouts. The mean observed energy cost value of 169.1 kcal was slightly greater than the minimum value of 150 kcal reported in the ACSM guidelines (p = 0.018). Like energy cost, all the intensity markers adopted to analyze the physiological strain induced by the Ex Rx circuit significantly exceeded their reference values for moderate intensity (reference values: 3.2 METs (mean observed value = 4.6 METs, p = 0.002); 40% of oxygen uptake reserve (mean observed value = 51.5%, p = 0.040); 40% of heart rate reserve (mean observed value = 64.1%, p &lt; 0.001)), according to the ACSM guidelines. In conclusion, a single bout of Ex Rx circuit performed at TAAs in Rio de Janeiro City was able to induce a physiological strain (i.e., energy cost and intensity) compatible with ACSM recommendations for eliciting health benefits among older adults. <\/jats:p>","DOI":"10.1139\/apnm-2018-0513","type":"journal-article","created":{"date-parts":[[2018,10,1]],"date-time":"2018-10-01T21:34:41Z","timestamp":1538429681000},"page":"477-484","update-policy":"https:\/\/doi.org\/10.1139\/csp-crossmark-policy","source":"Crossref","is-referenced-by-count":6,"title":["Concurrent exercise circuit protocol performed in public fitness facilities meets the American College of Sports Medicine guidelines for energy cost and metabolic intensity among older adults in Rio de Janeiro City"],"prefix":"10.1139","volume":"44","author":[{"given":"Felipe A.","family":"Cunha","sequence":"first","affiliation":[{"name":"Post-Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, RJ 20550-900, Brazil."},{"name":"Laboratory of Physical Activity and Health Promotion, University of Rio de Janeiro State, Rio de Janeiro, RJ 20550-900, Brazil."}]},{"given":"Gabrielle S.M.","family":"Gomes","sequence":"additional","affiliation":[{"name":"Post-Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, RJ 20550-900, Brazil."}]},{"given":"Joana","family":"Carvalho","sequence":"additional","affiliation":[{"name":"Research Centre in Physical Activity, Health and Leisure, Faculty of Sport Science, University of Porto, Porto 4200-450, Portugal."}]},{"given":"N\u00e1dia S.L.","family":"da Silva","sequence":"additional","affiliation":[{"name":"Post-Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, RJ 20550-900, Brazil."},{"name":"Laboratory of Physical Activity and Health Promotion, University of Rio de Janeiro State, Rio de Janeiro, RJ 20550-900, Brazil."}]}],"member":"155","reference":[{"key":"refg1\/ref1","unstructured":"ACSM. 2018. 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