High-Intensity Interval Training and Intermittent Fasting on Body Composition and Physical Performance in Active Women

Not Applicable

Completed

• Conditions: Intermittent Fasting; Body Composition; Physical Performance
• Interventions: Behavioral: Intensity interval training (HIIT); Behavioral: Intensity interval training (HIIT) + intermittent fasting

• Registration Number: NCT04404413
• Lead Sponsor: University of Alicante

Brief Summary

The objective of this study is to compare the body composition and physical performance effects of HIIT, with or without intermittent fasting intervention in active women. Fourteen active normal weight women aged 18-35 participated in the study. The effects of 2x8 weeks without (HIIT) or with (HIIT+IF) intermittent fasting caloric restriction (20% reduction in weekly energy intake) on body composition and performance (Hand-grip strength, Counter movement jump, Wingate Anaerobic 30 s Cycling Test), were compared. There were two weeks in between both phases when they did not perform the scheduled activity, so as not to alter the experimental phase.

Detailed Description

Not available

Study Timeline

• Study Start: 2019-09-01
• Primary Completion: 2019-09-11
• Study Completion: 2020-03-01
• Status Verified: 2020-05
• Study First Submitted: 2020-05-19
• Study First Submitted QC: 2020-05-21
• Last Update Submitted: 2020-05-21
• Study First Posted: 2020-05-27
• Last Update Posted: 2020-05-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 14

Inclusion Criteria

1. No muscular, ligamentous, bone, nerve or joint pathology incompatible with the training program.
2. Not to present cardiovascular or cardiorespiratory problems.
3. Physically active in the last 5 years, according to the American College of Sports Medicine (ACSM) definition.

Exclusion Criteria

1. Following pharmacological treatment or supplement.
2. Performing other sports activities that may influence the study results during their participation in the study.
3. Not following training or diet program guidelines or attending scheduled training sessions.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
PARTICIPANTS	Intensity interval training (HIIT)	A single-group crossover design was used to compare the effects of 2x8 weeks of high-intensity interval training without (HIIT) or with (HIIT+IF) intermittent fasting caloric restriction (20% reduction in weekly energy intake) on body composition and performance. There were two weeks in the middle of both phases in which they did not carry out programmed activity, in order not to alter the experimental phase.
PARTICIPANTS	Intensity interval training (HIIT) + intermittent fasting	A single-group crossover design was used to compare the effects of 2x8 weeks of high-intensity interval training without (HIIT) or with (HIIT+IF) intermittent fasting caloric restriction (20% reduction in weekly energy intake) on body composition and performance. There were two weeks in the middle of both phases in which they did not carry out programmed activity, in order not to alter the experimental phase.

Primary Outcome Measures

Name	Time	Method
Counter movement jump (CMJ)	16 weeks	In the CMJ test, the participants performed a maximum vertical jump starting from a standing position with arm swing not allowed.
Residual mass	16 weeks	Body composition masses were estimated using validated equations. Residual mass was obtained from the difference between fat mass and muscle mass.
Muscle mass	16 weeks	Body composition masses were estimated using validated equations. Lee's equation to estimate muscle mass.
Body Mass	16 weeks	It was performed using a digital scale with 0,1kg accuracy (Tanita BC-545, Tokyo, Japan).
Hand-grip strength	16 weeks	Hand-grip strength test was performed as an indicator of overall strength.
Fat mass	16 weeks	Body composition masses were estimated using validated equations. Carter's equation was used to estimate fat mass.
Wingate Anaerobic 30 s Cycling Test	16 weeks	Wingate Anaerobic 30 s Cycling Test with a validated cycloergometer (Monark 894E, Vansbro, Sweden).

Trial Locations

Locations (1)

Alejandro Martínez Rodriguez; 🇪🇸 San Vicente Del Raspeig, Alicante, Spain