NCT04126785

High-Intensity Interval Versus Moderate-Intensity Continuous Water Based Exercise in Hypertensive Older Individuals

Effects of High-Intensity Interval Versus Moderate-Intensity Continuous Heated Water-Based Exercise on Blood Pressure and Hemodynamic Variables in Older Individuals With Hypertension

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 60 (estimated)
• Sponsor: Universidade Estadual Paulista Júlio de Mesquita Filho · Academic / Other
• Sex: All
• Age: 60 Years
• Healthy volunteers: Accepted

Summary

This study will investigate the acute and chronic effects in hemodynamic and autonomic variables to high-intensity interval versus moderate-intensity continuous heated water-based exercise in older individuals with hypertension.

Detailed description

BACKGROUND: Population aging is an unprecedented worldwide reality, which results in a change of epidemiological profile and increased prevalence of age-related non-communicable chronic diseases (NCDs). Among age-related NCDs, systemic arterial hypertension (HPT) is the leading cause of mortality and disability worldwide and has increased prevalence, morbidity and mortality with advancing age. Increase in physical activity level through regular physical exercise is one of the main global goals for the prevention and treatment of HPT and others NCDs. Among the different exercise types and intensities, high intensity interval exercise (HIIT) showed superior benefits for reducing blood pressure (BP) and improving variables involved in the pathophysiology of HPT when compared to continuous moderate-intensity exercise (MICE). However individuals with comorbidities or injures are not capable to follow adequate intensity of both types of exercise. Heated water-based has been used as an option to facilitate the individuals adherence to exercise and positive results especially in BP levels. Despite this, little is known about the effect of HIIT or MICE in heated water-based on BP and other hemodynamic variables involved in the pathophysiology of HPT in older hypertensive individuals. PURPOSE: To evaluate the hemodynamic and autonomic response to a HIIT versus MICE session and in 12 weeks of training in older individuals with hypertension. METHODS: 60 elderly hypertensives of both genders, aged over 60 years, will be randomized in the ratio 2: 2: 1 to 12 weeks of high intensity interval training (HIIT), moderate intensity continuous (MICE) or control follow-up without exercise (CON), respectively. Exercise programs will be discontinued after 12 weeks, and individuals will be followed up for another 12 weeks. Individuals will have their physical (cardiorespiratory and muscular) and functional capacity (walking, sitting and lifting ability), hemodynamic variables (blood pressure, arterial stiffness, endothelial function and cardiovascular response to exercise) and autonomic variables (variability of heart rate) and quality of life assessed before and after 12 and 24 weeks of follow-up. Before the beginning of the follow-up, 20 elderly hypertensive patients will also have a hemodynamic response (ambulatory blood pressure, endothelial function, arterial stiffness) and autonomic (heart rate variability) to a session of HI-HEx, MI-HEx and CON evaluated and compared. The feasibility of HIIE and MICE will also be assessed over the 12 weeks of its implementation. HIIT will consisted of warm up (4 min), 21 min of 1 min high intensity exercise (level 15) and "very hard" (level 17) of the subjective Rating of Perceived Exertion Scale (RPE) alternating with 2 min of walking at intensity between "easy" (level 9) and "fairly easy" (level 11) of the RPE. MICE will performed of 4 min warm up and 26 min of walking or jogging at intensity between "fairly light" (level 11) and " somewhat hard " (level 13) of the RPE.

Conditions

• Hypertension

Interventions

Type	Name	Description
OTHER	High Intensity Interval Exercise in Heated Water-Based	High intensity interval exercise will perform at controlled heated water-base (30 e 32 ºC). Subject will be submerged at the xiphoid process level. The session will consist in 4 min walking (warm-up) at 9 level of rate perceived exertion (RPE) scale, followed by 21 min of HIIE, alternating 1 min of jogging/running at 15-17 (hard-very hard) level with 2 min of walking at 9-11 (very light-fairly light) level of RPE.
OTHER	Continuous Moderate Exercise in Heated Water-Based	Continuous moderate exercise will perform at controlled heated water-base (30 e 32 ºC). Subject will be submerged at the xiphoid process level. The session will consist in 4 min walking (warm-up) at 9 level (light) of RPE, followed by 26 min of MICE, walking at 11-13 (fairly light)level of RPE.
OTHER	Control Group	CON session will perform at controlled heated water-base (30 e 32 ºC). Subject will be seated in a chair and submerged at the until xiphoid process level for 30 min.

Timeline

• Start date: 2019-11-01
• Primary completion: 2025-12-01
• Completion: 2026-12-01
• First posted: 2019-10-15
• Last updated: 2025-07-25

Locations

1 site across 1 country: Brazil