Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
17 participants
INTERVENTIONAL
2018-08-31
2019-05-31
Brief Summary
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Detailed Description
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2. Randomization
Participants will proceed through each of the following conditions lasting 3 days:
CON: Participants will be in energy balance and consume 1.2 g protein/kg BW/day. Participants will be provided 30 g maltodextrin post-exercise.
CR+C: Participants will be restricted to 15 kcal/kg FFM/day and consume 1.2 g protein/kg BW/day. Participants will be provided 30 g maltodextrin post-exercise.
CR+P: Participants will be restricted to 15 kcal/kg FFM/day and consume 1.2 g protein/kg BW/day. Participants will be provided 30 g whey protein post-exercise.
3. Diet Prescription Dietary energy intake will be controlled using clinical products, maltodextrin and whey protein isolate to meet target energy intakes. Participants will receive calcium and Vitamin D supplementation throughout the study.
4. Exercise Prescription Participants will perform one bout of 5 sets of 5 repetitions of barbell back squat exercise on the morning of Day 3 each condition. Additional exercise and intense physical activity will be prohibited.
5. Assessments Body weight and composition (DXA + BIA), fasting blood draws for assessment of metabolic and anabolic hormones and questionnaires will be conducted before and after each condition. A 24-hour serial blood draw procedure will be conducted following each workout session on each Day 3.
6. Washout Once a participant completes a study condition, participants will continue to take daily body weights at home for up to one week. Then participants will be required to wait one more week before completing their next condition during which they will resume regular diet and physical activity.
Conditions
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Study Design
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RANDOMIZED
CROSSOVER
BASIC_SCIENCE
SINGLE
Study Groups
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Energy Balance
Participants will be in energy balance and consume 1.2 g/kg BW protein. They will be provided 30 g of maltodextrin following exercise.
Energy Balance
Participants will consume 40 kcal/kg FFM/day.
Post-Exercise Carbohydrate
Participants will ingest 30 g of carbohydrate following exercise.
Calcium and Vitamin D
Participants will be supplied Calcium and Vitamin D supplements throughout the study period matched to the CON condition.
Caloric Restriction and CHO Supp
Participants will be calorie restricted to 15 kcal/kg FFM/day and consume 1.2 g/kg BW protein. They will be provided 30 g of maltodextrin following exercise.
Caloric Restriction
Participants will consume 15 kcal/kg FFM/day.
Post-Exercise Carbohydrate
Participants will ingest 30 g of carbohydrate following exercise.
Calcium and Vitamin D
Participants will be supplied Calcium and Vitamin D supplements throughout the study period matched to the CON condition.
Caloric Restriction and PRO Supp
Participants will be calorie restricted to 15 kcal/kg FFM/day and consume 1.2 g/kg BW protein. They will be provided 30 g of whey protein following exercise.
Caloric Restriction
Participants will consume 15 kcal/kg FFM/day.
Post-Exercise Protein
Participants will ingest 30 g of protein following exercise.
Calcium and Vitamin D
Participants will be supplied Calcium and Vitamin D supplements throughout the study period matched to the CON condition.
Interventions
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Caloric Restriction
Participants will consume 15 kcal/kg FFM/day.
Post-Exercise Protein
Participants will ingest 30 g of protein following exercise.
Energy Balance
Participants will consume 40 kcal/kg FFM/day.
Post-Exercise Carbohydrate
Participants will ingest 30 g of carbohydrate following exercise.
Calcium and Vitamin D
Participants will be supplied Calcium and Vitamin D supplements throughout the study period matched to the CON condition.
Eligibility Criteria
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Inclusion Criteria
* Weight-Stable (2.5 kg) within the past six months
* Height-Stable (\< 0.25 inches) within the past year
* 3 years of resistance training experience
\- \<20% body fat (men) or \<30% body fat (women)
Exclusion Criteria
* Pregnancy
* Taking interfering medications such as steroids, thyroid or growth hormones
19 Years
30 Years
ALL
Yes
Sponsors
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University of Nebraska Lincoln
OTHER
Responsible Party
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Principal Investigators
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Karsten Koehler
Role: PRINCIPAL_INVESTIGATOR
University of Nebraska Lincoln
Locations
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Sports and Exercise Nutrition Laboratory, Department of Nutrition and Health Sciences, Ruth Leverton Hall
Lincoln, Nebraska, United States
Countries
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Other Identifiers
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17933
Identifier Type: -
Identifier Source: org_study_id
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