High-Intensity Progressive Resistance Training Increases Strength With No Change in Cardiovascular Function and Autonomic Neural Regulation in Older Adults

in Journal of Aging and Physical Activity
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The effects of high-intensity progressive resistance training (HIPRT) on cardiovascular function and autonomic neural regulation in older adults are unclear. To investigate this issue, 25 older adults were randomly divided into two groups: control (CON, N = 13, 63 ± 4 years; no training) and HIPRT (N = 12, 64 ± 4 years; 2 sessions/week, 7 exercises, 2−4 sets, 10−4 RM). Before and after four months, maximal strength, quadriceps cross-sectional area (QCSA), clinic and ambulatory blood pressures (BP), systemic hemodynamics, and cardiovascular autonomic modulation were measured. Maximal strength and QCSA increased in the HIPRT group and did not change in the CON group. Clinic and ambulatory BP, cardiac output, systemic vascular resistance, stroke volume, heart rate, and cardiac sympathovagal balance did not change in the HIPRT group or the CON group. In conclusion, HIPRT was effective at increasing muscle mass and strength without promoting changes in cardiovascular function or autonomic neural regulation.

Kanegusuku, Queiroz, and Forjaz are with the Exercise Hemodynamic Laboratory, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil. Silva is with the Physiology Division, Biological Science Department, Federal University of the Triángulo Mineiro, Uberaba, Brazil. de Mello is with the Center for Psychobiology and Exercise Studies, Federal University of São Paulo, São Paulo, Brazil. Ugrinowitsch is with the Neuromuscular Adaptation Laboratory, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.

Address author correspondence to Cláudia L.M. Forjaz at cforjaz@usp.br.