Resistance Training in the Fasted State
Condition: Fasting; Exercise; Resistance Training
Study type: Interventional

Summary: 
      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%.
    


Intervention name(s): Resistance training in the fasted state; Resistance training in the fed state
Intervention type(s): Other; Other
Intervention description(s): On the first day of evaluations, the subjects will perform the basal metabolic rate (BMR) analysis, as well as familiarization with the neuromuscular tests. After the preliminary tests, the volunteers will perform the pre-intervention procedures. Assessments of body composition, muscle thickness and quality, maximum dynamic strength and maximum power will be performed. In addition, instruments related to dietary control and physical activity level will be applied. Subsequently, in a randomized manner, participants will be allocated to one of two different interventions. During the intervention (8 weeks), the adherence to the standard diet will be verified, as well as body composition, muscle thickness and quality, maximum dynamic strength and maximum power will be reassessed. After the 12 weeks of intervention, the volunteers will perform the evaluations referring to the post-intervention moment, following the same steps of the pre-intervention collections.; On the first day of evaluations, the subjects will perform the basal metabolic rate (BMR) analysis, as well as familiarization with the neuromuscular tests. After the preliminary tests, the volunteers will perform the pre-intervention procedures. Assessments of body composition, muscle thickness and quality, maximum dynamic strength and maximum power will be performed. In addition, instruments related to dietary control and physical activity level will be applied. Subsequently, in a randomized manner, participants will be allocated to one of two different interventions. During the intervention (8 weeks), the adherence to the standard diet will be verified, as well as body composition, muscle thickness and quality, maximum dynamic strength and maximum power will be reassessed. After the 12 weeks of intervention, the volunteers will perform the evaluations referring to the post-intervention moment, following the same steps of the pre-intervention collections.
Other intervention name(s): Fasting; Strength training; Feeding; Strength training
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: Triple (Care Provider, Investigator, Outcomes Assessor)
Primary purpose: Other