Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05120440
Other study ID # IRB2021-649
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date November 17, 2021
Est. completion date May 16, 2022

Study information

Verified date August 2022
Source Texas Tech University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial 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.


Description:

OVERVIEW 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. Participants will report to the laboratory on three separate occasions, with 3 to 10 days between each visit. At the first visit, after initial screening and provision of informed consent, each participant will undergo a performance screening and familiarization session to confirm eligibility and become accustomed to the study procedures. This familiarization session will include initial assessments of bench press, barbell back squat, and conventional deadlift maximal strength in order to determine final eligibility. Additionally, body composition will be assessed via dual-energy X-ray absorptiometry and digital anthropometry at this session for descriptive purposes. Following the familiarization session, each participant will complete two laboratory visits consisting of completion of the resistance training workout described below after consuming the provided meals either divided between breakfast and lunch (~3-4 hours after breakfast), or solely at lunch. This will ensure each participant consumes identical quantities and types of foods prior to both exercise sessions. Thus, the only difference will be the food distribution as two meals (breakfast and lunch) or one meal (lunch). Throughout the study, participants will be asked to maintain their normal lifestyle practices. In addition, participants will report their dietary intake during the 24-hour period prior to the first testing session and will be asked to replicate this intake during the 24-hour period prior to the subsequent testing sessions. A background questionnaire will also be completed to assess general supplement use. PURPOSE The purpose of this investigation is to examine the effect of breakfast consumption or omission on afternoon resistance training performance in habitual breakfast consumers and non-consumers. GENERAL HYPOTHESIS It is hypothesized that afternoon resistance training performance will be impaired in habitual breakfast consumers when breakfast is omitted, but similar decrements will not be observed in habitual non-consumers. HYPOTHESES TO BE TESTED/SPECIFIC AIMS Specific Aim 1. To determine the effect of breakfast consumption on afternoon resistance training performance. Hypothesis. It is hypothesized that afternoon resistance training performance will not be impacted by breakfast consumption or omission when the cohort is examined as a whole. Specific Aim 2. To determine whether habitual breakfast consumption patterns impact afternoon resistance training performance following consumption or omission of breakfast. Hypothesis. It is hypothesized that habitual breakfast consumption patterns will impact the effect of breakfast consumption on resistance training performance. More specifically, performance will be negatively affected by the omission of breakfast in those who habitually consume breakfast. Yet the omission of breakfast will not negatively impact resistance training performance in those that regularly do not consume breakfast. Specific Aim 3. To determine the impact of breakfast consumption on subjective responses throughout an afternoon resistance training session. Hypothesis. It is hypothesized that subjective responses during afternoon resistance training will not be impacted by breakfast consumption or omission when the cohort is examined as a whole. Specific Aim 4. To determine whether habitual breakfast consumption patterns influence subjective responses throughout an afternoon resistance training session, following consumption or omission of breakfast. Hypothesis. It is hypothesized that worsened subjective responses will be observed after breakfast omission only in those who habitually consume breakfast.


Recruitment information / eligibility

Status Completed
Enrollment 39
Est. completion date May 16, 2022
Est. primary completion date May 16, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 40 Years
Eligibility Inclusion Criteria: - 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. Exclusion Criteria: - Failing to meet any of the aforementioned inclusion criteria. - 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.

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Breakfast omission
Breakfast omission will consist of not eating breakfast on the morning of afternoon resistance training performance assessment.
Breakfast consumption
Breakfast consumption will consist of eating a standardized breakfast on the morning of afternoon resistance training performance assessment.

Locations

Country Name City State
United States Department of Kinesiology & Sport Management Lubbock Texas

Sponsors (1)

Lead Sponsor Collaborator
Texas Tech University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary 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
Primary Squat Repetition Volume The total number of repetitions completed across four sets of the barbell back squat exercise. 20 minutes
Primary Bench Press Repetition Volume The total number of repetitions completed across four sets of the barbell bench press exercise. 20 minutes
Primary Deadlift Repetition Volume The total number of repetitions completed across four sets of the conventional barbell deadlift exercise. 20 minutes
Primary Average Concentric Barbell Velocity for Squat The average barbell velocity during the concentric portion of the squat exercise across all repetitions. 20 minutes
Primary 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
Primary Average Concentric Barbell Velocity for Deadlift The average barbell velocity during the concentric portion of the deadlift exercise across all repetitions. 20 minutes
Primary Peak Concentric Barbell Velocity for Squat The peak barbell velocity during the concentric portion of the squat exercise across all repetitions. 20 minutes
Primary 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
Primary Peak Concentric Barbell Velocity for Deadlift The peak barbell velocity during the concentric portion of the deadlift exercise across all repetitions. 20 minutes
Primary Average Power for Squat The average power during the squat exercise across all repetitions. 20 minutes
Primary Average Power for Bench Press The average power during the bench press exercise across all repetitions. 20 minutes
Primary Average Power for Deadlift The average power during the deadlift exercise across all repetitions. 20 minutes
Primary Peak Power for Squat The peak power during the squat exercise across all repetitions. 20 minutes
Primary Peak Power for Bench Press The peak power during the bench press exercise across all repetitions. 20 minutes
Primary Peak Power for Deadlift The peak power during the deadlift exercise across all repetitions. 20 minutes
Secondary Hunger Subjective rating of hunger as assessed by visual analog scale. 1 hour
Secondary Desire to Eat Subjective rating of desire to eat as assessed by visual analog scale. 1 hour
Secondary Fullness Subjective rating of fullness as assessed by visual analog scale. 1 hour
Secondary Energy Subjective rating of energy as assessed by visual analog scale. 1 hour
Secondary Focus Subjective rating of focus as assessed by visual analog scale. 1 hour
Secondary Fatigue Subjective rating of fatigue as assessed by visual analog scale. 1 hour
See also
  Status Clinical Trial Phase
Completed NCT05987046 - Contrast Training, Post-activation Countermovement Jump Performance in High Strength Male N/A
Completed NCT04136821 - The Long-term Effects of Oceanix™ on Resistance Training Adaptations N/A
Recruiting NCT05945641 - Effect of Low-load Resistance Training vs. High-intensity Interval Training on Local Muscle Endurance N/A
Completed NCT04069351 - Body Composition Changes During Overfeeding Plus Resistance Training N/A
Not yet recruiting NCT06360536 - Remotely Delivered Resistance Training for Cardiometabolic Health Among Black Women N/A
Completed NCT04535596 - Blood Flow Restriction Exercises and Conservative Exercises in Knee Osteoarthritis N/A
Completed NCT04213586 - Effects of Whey Protein and Collagen Supplementation N/A
Completed NCT05052164 - Improvement Of Physical And Physiological Parameters In Menopausal Or Post-Menopausal Celiac Women N/A
Completed NCT04630951 - Blood Flow Restriction Strength Training in Professional Soccer Players N/A
Not yet recruiting NCT03722277 - Variable Resistance Training in Patients With Osteoarthrosis of the Knee N/A
Completed NCT00991523 - Overnight Post-Exercise Recovery After Protein Ingestion Prior to Sleep N/A
Completed NCT01216722 - Study of Resistance Strengthening Versus Ambulation Post-Liver Transplant N/A
Recruiting NCT06131138 - Aquatic Exercises VS Core Strengthening on Disability, Flexibility and Postural Stability in Weightlifters. N/A
Recruiting NCT06240962 - Mindfulness Practice vs Strength Training on Pain, Kinesiophobia and Function Among Sprinters N/A
Recruiting NCT06131125 - Plyometric vs Explosive Strength Training on Agility, Power, and Balance in Basketball Players N/A
Recruiting NCT06131047 - High Intensity Resistance Training With and Without Blood Flow Restriction in ACL Reconstruction N/A
Completed NCT04315077 - The Short Term Effects of Oceanix Supplementation on Recovery N/A
Completed NCT05597423 - Massage as Recovery Strategy After Resistance Training N/A
Completed NCT02327975 - Prescription of Physical Exercise Through Mobile Application in Elderly N/A
Active, not recruiting NCT06171841 - Effects of Low-Intensity Blood Flow Restriction Training in Normoxia and Hypoxia Conditions N/A