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Effect of Autonomic Responses after Isometric Training at Different Intensities on Obese People

Author(s):

Alexis Espinoza-Salinas*, José González-Jurado, Giovanny Arenas-Sanchez , Soledad Fuentealba-Sepúlveda, Isaias Cabezas-Gaete, Marcelo Bobadilla- Olivares and Arnaldo Burdiles-Alvarez   Pages 1 - 9 ( 9 )

Abstract:


Background: Arterial hypertension is among the leading causes of mortality worldwide. The primary non-pharmacological management of arterial hypertension is isometric grip training, which has shown better results than pharmacological methods; however, it has not been thoroughly studied in large muscle groups.

Objective: This study compared the pressor response of isometric exercise training at different intensities, in large versus small muscle groups, in sedentary eutrophic and overweight people aged 20-29 years.

Methods: A sample of 93 people (57 people with excess weight and 36 people of normal weight) participated in isometric training for 5 days, subdivided into leg press versus Handgrip strength, with different intensities for each subgroup (30 and 50%, 1 RM). Before and after the 5 training days, heart rate variability (HRV) and systolic and diastolic blood pressure, BSBP-BDBP and PSBP-PDBP, were measured to evaluate the state of sympathetic activation at rest and pressor response.

Results: Changes with significant differences (p <0.05) in terms of pre-post training measurements in the eutrophic group were the BSBP-PSBP variables at 30% and 50% 1 RM for manual isometric grip strength. In the excess weight group, the only significant change was the PSBP variable in Handgrip strength at 30% 1 RM. It should be noted that in all cases, blood pressure values tended to reduce.

Conclusion: Isometric strength exercises in large and small muscle groups show a tendency to reduce blood pressure values; however, the isometric Handgrip force at 30% 1 RM shows statistically significant reductions in blood pressure values.

Keywords:

Blood pressure, arterial hypertension, isometric training, obesity, autonomic response, handgrip training

Affiliation:

Laboratorio de Fisiología del Ejercicio, Escuela de Kinesiología, Universidad Santo Tomás, Facultad de Ciencias del Deporte, Universidad Pablo de Olavide. Sevilla, Laboratorio de Fisiología del Ejercicio, Escuela de Kinesiología, Universidad Santo Tomás, Laboratorio de Fisiología del Ejercicio, Escuela de Kinesiología, Universidad Santo Tomás, Laboratorio de Fisiología del Ejercicio, Escuela de Kinesiología, Universidad Santo Tomás, Laboratorio de Fisiología del Ejercicio, Escuela de Kinesiología, Universidad Santo Tomás, Centro de Medicina del Deporte, Clínica las Condes



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