High-intensity Interval Training on the Self-esteem, Basal Metabolic Rate and Muscle Mass in Overweight Women.

Summary

Overweight and obesity are a public health problem for society, reflected by an increase in its prevalence worldwide, being more frequent in women and related to low levels of self-esteem, accumulation of subcutaneous fat and internal organs, reduction of muscle mass (MM) and basal metabolic rate (BMR). Women are more predisposed to present weight gain because they are metabolically less efficient, have greater food intake, greater physical inactivity, and genetic factors. The different methods of physical training used for weight control are continuous training (CT) and the high-intensity interval training (HIIT). Both CT and HIIT have shown benefits without finding superiority of any of these methods. Nevertheless, there is a trend to the use HIIT programs, since they are more time-efficient and supports their use to induce physiological and metabolic adaptations over time, since this is a barrier to adherence to exercise programs. Overweight and obesity causes individual alterations in body composition and exercise leads to increase in MM, increase in caloric expenditure during the training session and increase in BMR due to the onset of muscle growth, secondary to an increase in the activity of the mitochondrial enzymes (greater mitochondrial biogenesis in the muscle), adaptations that could depend on the type of exercise, its intensity and the volume of it, but it is not clear due to the lack of evidence regarding this.

The primary objective of this study is to demonstrate that a HIIT program of short duration in a real-world setting has a standardized mean difference (SMD) higher than 0.84 in the improvement of self-esteem when comparing with a moderate-intensity continuous training (MICT) in women 18 to 44 years with overweight and obesity and low self-esteem, during eight weeks.

The secondary objective is to demonstrate that a low-volume HIIT in a real-world setting improves MM in 2% compared with MICT during a period of eight weeks in women 18 to 44 years.

Conditions

• Healthy Volunteers

Interventions

BEHAVIORAL

High-intensity interval training

The intervals of high intensity are conducted between 90 and 95 % of heart rate maximum (HRmax) and resting between 50 and 60 % of the HRmax 15 loads of 30 seconds at high intensity, with 60 seconds of recovery at loads of moderate intensity.

BEHAVIORAL

Moderate-intensity continuous training

The continuous training will be carried out at an intensity between 65 and 75% of the HRmax.

Sponsors & Collaborators

• Universidad de Antioquia

  lead OTHER

Principal Investigators

• Elkin F Arango, MD. MsC · Universidad de Antioquia

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

44 Years

Sex

FEMALE

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2018-02-26

Primary Completion

2019-01-28

Completion

2019-04-05

Countries

• Colombia

Study Locations