The Effect of Breakfast Consumption on Afternoon Resistance Training Performance

NCT05120440 | Completed

• 1 other identifier: IRB2021-649
• Study Type: interventional
• Target: 39
• Locations: 1 country
• Sites: 1

Brief Summary

This study is a randomized crossover trail examining the effect of breakfast consumption or omission on afternoon resistance training performance. Resistance-trained adults will complete a resistance training workout comprised of barbell back squat, barbell bench press, and barbell conventional deadlift following either consuming breakfast and lunch, or the same amount of food consumed solely at lunch. For each testing session the participants will be provided with all food to consume prior to arriving at the laboratory. Major performance outcomes will be total repetition volume completed for each exercise (i.e. bench press, squat, and deadlift) and the entire workout (each individual trial), along with barbell kinematics for each exercise.

Conditions

Resistance Training; Breakfast

Keywords

resistance training; breakfast; intermittent fasting

Outcome Measures

Primary Outcomes (16)

• Total Repetition Volume

  The total number of repetitions completed across four sets of the barbell back squat exercise, four sets of the barbell bench press exercise, and four sets of the conventional barbell deadlift exercise.

  1 hour

• Squat Repetition Volume

  The total number of repetitions completed across four sets of the barbell back squat exercise.

  20 minutes

• Bench Press Repetition Volume

  The total number of repetitions completed across four sets of the barbell bench press exercise.

  20 minutes

• Deadlift Repetition Volume

  The total number of repetitions completed across four sets of the conventional barbell deadlift exercise.

  20 minutes

• Average Concentric Barbell Velocity for Squat

  The average barbell velocity during the concentric portion of the squat exercise across all repetitions.

  20 minutes

• Average Concentric Barbell Velocity for Bench Press

  The average barbell velocity during the concentric portion of the bench press exercise across all repetitions.

  20 minutes

• Average Concentric Barbell Velocity for Deadlift

  The average barbell velocity during the concentric portion of the deadlift exercise across all repetitions.

  20 minutes

• Peak Concentric Barbell Velocity for Squat

  The peak barbell velocity during the concentric portion of the squat exercise across all repetitions.

  20 minutes

• Peak Concentric Barbell Velocity for Bench Press

  The peak barbell velocity during the concentric portion of the bench press exercise across all repetitions.

  20 minutes

• Peak Concentric Barbell Velocity for Deadlift

  The peak barbell velocity during the concentric portion of the deadlift exercise across all repetitions.

  20 minutes

• Average Power for Squat

  The average power during the squat exercise across all repetitions.

  20 minutes

• Average Power for Bench Press

  The average power during the bench press exercise across all repetitions.

  20 minutes

• Average Power for Deadlift

  The average power during the deadlift exercise across all repetitions.

  20 minutes

• Peak Power for Squat

  The peak power during the squat exercise across all repetitions.

  20 minutes

• Peak Power for Bench Press

  The peak power during the bench press exercise across all repetitions.

  20 minutes

• Peak Power for Deadlift

  The peak power during the deadlift exercise across all repetitions.

  20 minutes

Secondary Outcomes (6)

• Hunger

  1 hour

• Desire to Eat

  1 hour

• Fullness

  1 hour

• Energy

  1 hour

• Focus

  1 hour

Study Arms (2)

Breakfast Omission

EXPERIMENTAL

This arm will consist of omission of breakfast and consumption of standardized food items solely at lunch preceding afternoon resistance exercise.

Other: Breakfast omission

Breakfast Consumption

ACTIVE COMPARATOR

This arm will consist of consumption of standardized food items at breakfast and lunch preceding afternoon resistance exercise.

Other: Breakfast consumption

Interventions

Breakfast omission OTHER

Breakfast omission will consist of not eating breakfast on the morning of afternoon resistance training performance assessment.

Breakfast Omission

Breakfast consumption OTHER

Breakfast consumption will consist of eating a standardized breakfast on the morning of afternoon resistance training performance assessment.

Breakfast Consumption

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Between the ages of 18 and 40
• Body mass between 50 - 110 kg (110-242 lb)
• Generally healthy (defined as an absence of any disease or medical condition which could potentially be negatively affected by consumption of the commercially available dietary supplements or performance of exercise, including but not limited to musculoskeletal or cardiovascular diseases).
• Resistance-trained, defined as completing 2+ resistance training sessions per week for at least three months prior to screening.
• Participants must self-report either consuming or skipping breakfast ≥ 5 times per week for three months prior to screening.
• Participants must have reported regular training of the lower body through a multi-joint exercise such as the squat or leg press at least once weekly during the three-month period prior to screening.
• Participants must have reported regular training of the bench press or chest press variation at least once weekly during the three-month period prior to screening.
• Participants must have reported regular training of the deadlift or deadlift variation at least once weekly during the three-month period prior to screening.
• Female participants will be required to bench press ≥ 0.5 x body mass, barbell back squat ≥ 0.75 x body mass, and deadlift ≥ 1.0 x body mass to be eligible or this study.
• Male participants will be required to bench press ≥ 1.0 x body mass, barbell back squat ≥ 1.375 x body mass, and deadlift ≥ 1.75 x body mass to be eligible or this study.

You may not qualify if:

• Pregnant or breastfeeding (for female participants)
• Taking prescription medication which could reasonably make participation unsafe for the participant or influence study outcomes
• An inability to complete resistance exercise due to injury or medical condition
• Inability to complete a 16 hour fast.
• Allergy to any of the ingredients in the provided breakfast and lunch.
• Current use of anabolic steroids
• Presence of a pacemaker or other implanted electrical device.
• Inability to perform the exercises with safe and proper form as determined by members of the research team.

Sponsors & Collaborators

• Texas Tech University: lead

Study Sites (1)

Department of Kinesiology & Sport Management

Lubbock, Texas, 79409, United States

Location

MeSH Terms

Conditions

Intermittent Fasting

Condition Hierarchy (Ancestors)

Fasting; Feeding Behavior; Behavior

Study Officials

• Grant M Tinsley, PhD

  Texas Tech University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 2, 2021
• First Posted: November 15, 2021
• Study Start: November 17, 2021
• Primary Completion: May 16, 2022
• Study Completion: May 16, 2022
• Last Updated: August 9, 2022

Record last verified: 2022-08

Locations

US (1)