Cardiovascular Responses to Different Resistance Exercise Protocols in Elderly.

Autor:	Sardeli AV; Gerontology Program - Faculty of Medical Sciences, University of Campinas - UNICAMP, Campinas, Brazil.; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil., do Carmo Santos L; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil., Ferreira MLV; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil., Gáspari AF; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil., Rodrigues B; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil., Cavaglieri CR; Gerontology Program - Faculty of Medical Sciences, University of Campinas - UNICAMP, Campinas, Brazil.; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil., Chacon-Mikahil MPT; Gerontology Program - Faculty of Medical Sciences, University of Campinas - UNICAMP, Campinas, Brazil.; Laboratory of Exercise Physiology - FISEX, University of Campinas - UNICAMP, Campinas, Brazil.
Jazyk:	angličtina
Zdroj:	International journal of sports medicine [Int J Sports Med] 2017 Nov; Vol. 38 (12), pp. 928-936. Date of Electronic Publication: 2017 Sep 26.
DOI:	10.1055/s-0043-115737
Abstrakt:	Increase in muscle mass and strength through resistance exercise (RE) has been highly recommended for healthy aging. On the other hand, RE could lead to acute cardiovascular risks prompted mainly by intense blood pressure elevations and cardiac autonomic imbalance. We compared the cardiovascular responses to three different RE protocols performed by 21 healthy elderly on a leg press machine. The protocols tested were high load (80% 1RM) until muscular failure (HL); low load (30% 1RM) until muscular failure (LL); low load, 30 repetitions followed by 3 sets of 15 repetitions, with 50% blood flow restriction (LL-BFR); and a control session (CON). Based on heart rate variability analysis, only LL kept parasympathetic indexes lower than CON at 30 min recovery. By finger photoplethysmography, LL-BFR prompted higher systolic and mainly diastolic blood pressure increments in many sets. The heart rate and cardiac output increase, and total peripheral resistance reduction following exercise were not different among RE protocols. There was no significant post-exercise hypotension and carotid arterial compliance changes. HL seems to be the safer protocol to be recommended for the healthy elderly, because it induces lower blood pressure increments and faster parasympathetic recovery compared to LL and LL-BFR. Competing Interests: Conflicts of interest: The authors declare there is no conflict of interest. (© Georg Thieme Verlag KG Stuttgart · New York.)
Databáze:	MEDLINE
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