Body Composition, Intermittent Fasting, Physical Performance
Conditions
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.
Interventions
BEHAVIORALIntensity interval training (HIIT)
2x8 weeks of high-intensity interval training (HIIT)
BEHAVIORALIntensity interval training (HIIT) + intermittent fasting
2x8 high-intensity interval training with (HIIT+IF) intermittent fasting caloric restriction (20% reduction in weekly energy intake).
Sponsors
Universidad Católica San Antonio de Murcia
University of Alicante
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 35 Years
Healthy volunteers
Yes
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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Hand-grip strength | 16 weeks | Hand-grip strength test was performed as an indicator of overall strength. |
| 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. |
| Wingate Anaerobic 30 s Cycling Test | 16 weeks | Wingate Anaerobic 30 s Cycling Test with a validated cycloergometer (Monark 894E, Vansbro, Sweden). |
| Fat mass | 16 weeks | Body composition masses were estimated using validated equations. Carter's equation was used to estimate fat mass. |
| Muscle mass | 16 weeks | Body composition masses were estimated using validated equations. Lee's equation to estimate muscle mass. |
| 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. |
| Body Mass | 16 weeks | It was performed using a digital scale with 0,1kg accuracy (Tanita BC-545, Tokyo, Japan). |
Countries
Spain
Outcome results
None listed