Journal
INTERNATIONAL JOURNAL OF SPORTS MEDICINE
Volume 34, Issue 9, Pages 806-813Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0032-1331185
Keywords
muscular strength; blood pressure; heart rate variability; aging
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Funding
- Araucaria Foundation for the Support of Scientific and Technological Development of Parana (FAADCT/Brazil)
- National Council of Technological and Scientific Development (CNPq/Brazil)
- FAADCT/Brazil [15466]
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The purpose of this study was to investigate the effect of resistance training on resting blood pressure and heart rate variability in elderly postmenopausal women. 29 untrained, non-hypertensive elderly women were randomly assigned to 2 groups: an intervention group (n=15, 65.5 +/- 5.0 years, 57.3 +/- 6.5 kg, 156.7 +/- 5.1 cm) that underwent a supervised resistance training program (8 exercises, 2 sets, 10-15 repetitions, 3 times/week) or a control group (n=14, 66.2 +/- 4.1 years, 61.1 +/- 11.7 kg, 157.5 +/- 7.1 cm) that participated in a supervised stretching program (25-30 min/session, 2 times/week). Resting auscultatory blood pressure, heart rate variability, evaluated from short recordings in a seated position, and maximal dynamic strength (1-RM test) were measured at baseline and after 12 weeks. A group x time ANOVA revealed that muscular strength increased significantly in the resistance training group (+ 10.2% for bench press and +12.7% for leg extension, P<0.05). Systolic blood pressure was reduced significantly in the resistance training group from pre- to post-intervention period (- 5 mmHg; P<0.05), while no significant effect was noted for diastolic blood pressure and heart rate variability indexes (P>0.05). None of these variables changed in the control group throughout the study. In conclusion, a supervised resistance training program improved muscular strength and reduced systolic blood pressure without affecting diastolic blood pressure and heart rate variability in elderly postmenopausal women.
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