Resistance Training in the Fasted State

Federal University of Rio Grande do Sul

Status: Completed

Conditions: Resistance Training; Fasting; Exercise

Treatments: Other: Resistance training in the fasted state; Other: Resistance training in the fed state

Study type: Interventional

Funder types: Other

Identifiers

NCT05482750

URioGrandeESEFID

Details and patient eligibility

About

It is well evidenced in the literature that fasting aerobic exercise generates a series of metabolic differences when compared to exercise performed in the fed state, including the use of fats predominantly as an energy source. Consequently, increases in adaptations to aerobic training, related to health and physical performance, are observed when sessions are performed in the fasted state. In relation to resistance training, the evidence is limited. There is a lack of data in the literature regarding the effects of fasting on resistance exercises and whether this practice may reflect in losses or improvements in morphological and neuromuscular adaptations related to resistance training. Thus, the aim of the present project is to compare the effects of resistance training performed in the fasted state compared to the fed state during 12 weeks on body composition and physical performance in young adults. Thirty-four eutrophic or overweight individuals, not engaged in regular resistance exercises, aged between 20 and 40 years, will be recruited. They will be put on a standard customized diet and will perform 2 weekly sessions of resistance exercise after overnight fasting (10 to 12 hours) or in the fed state, for 12 weeks. Before, in the middle and after this period, evaluations of body composition, muscle thickness and quality, maximum dynamic strength and maximum power will be analyzed. Comparisons will be performed using Generalized Estimating Equations (GEE), adopting the factors group (2 stratifications) and time (3 stratifications). All results will be expressed as mean and standard deviation and the accepted significance level will be 5%.

Enrollment: 28 patients

Sex: All

Ages: 19 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Men and women;
• Aged between 19 and 40 years;
• Body mass index (BMI) between 18 and 29.9 kg/m²;
• Not engaged in regular strength physical exercise (>1 weekly session) for the last 3 months.

Exclusion criteria

• Smokers;
• Use of medications and/or supplements that may influence the outcomes evaluated;
• Individuals who have a chronic disease that may prevent physical exercise.

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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28 participants in 2 patient groups

Resistance training in the fasted state

Experimental group

Description:

Subjects will maintain the standard diet and will perform resistance exercise sessions after overnight fasting (10 to 12 hours). Over the 12 weeks of intervention, participants will perform two sessions a week of resistance exercises.

Treatment:

Other: Resistance training in the fasted state

Resistance training in the fed state

Active Comparator group

Description:

Subjects will maintain the standard diet and will perform resistance exercise sessions in the fed state, between 1 and 2 hours after consuming a carbohydrate-containing meal. Over the 12 weeks of intervention, participants will perform two sessions a week of resistance exercises.

Treatment:

Other: Resistance training in the fed state