Age Affects Exercise-Induced Improvements in Heart Rate Response to Exercise

Autor(es)

Ciolac, E. G. ^[1] ; Roberts, C. K. ^[2] ; Rodrigues da Silva, J. M. ^[3] ; Guimaraes, G. V. ^[4]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Sch Sci, Dept Phys Educ, Exercise & Chron Dis Res Lab, Sao Paulo - Brazil

^[2] Univ Calif Los Angeles, Sch Nursing, Translat Sci Sect, Exercise & Metab Dis Res Lab, Los Angeles, CA 90024 - USA

^[3] Univ Sao Paulo, Sch Med, Inst Orthoped & Traumatol, Lab Kinesiol, Sao Paulo - Brazil

^[4] Univ Sao Paulo, Sch Med, Inst Heart, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 35, n. 5, p. 371-378, MAY 2014.
• Citações Web of Science: 1

Resumo

The aim of the present study was to analyze the effects of age on cardiorespiratory fitness (CRF), muscle strength and heart rate (HR) response to exercise adaptation in women in response to a long-term twice-weekly combined aerobic and resistance exercise program. 85 sedentary women, divided into young (YG; n=22, 30.3 +/- 6.2 years), early middle-aged (EMG; n=28, 44.1 +/- 2.5 years), late middle-aged (LMG; n=20, 56.7 +/- 3.5 years) and older (OG; n=15, 71.4 +/- 6.9 years) groups, had their CRF, muscle strength (1-repetition maximum test) and HR response to exercise (graded exercise test) measured before and after 12 months of combined exercise training. Exercise training improved CRF and muscle strength in all age groups (P<0.05), and no significant differences were observed between groups. Exercise training also improved resting HR and recovery HR in YG and EMG (P<0.05), but not in LMG and OG. Maximal HR did not change in any group. Combined aerobic and resistance training at a frequency of 2 days/week improves CRF and muscle strength throughout the lifespan. However, exercise-induced improvements in the HR recovery response to exercise may be impaired in late middle-aged and older women. (AU)

• Processo FAPESP: 12/02409-0 - Efeitos da atividade física em piscina aquecida versus atividade física em solo na densidade mineral óssea, capacidade física e composição corporal em transplantados cardíacos
• Beneficiário: Emmanuel Gomes Ciolac
• Modalidade de apoio: Auxílio à Pesquisa - Regular