Resistance ExerciseLEARNCT06623747
Low Energy Availability and Recovery From Resistance Exercise
A study testing Diet in people with Resistance Exercise, run by Chaise Murphy at 1 site in United States.
Trial summary
This research project will determine how restricting Calories to lose weight affects your ability to recover between weightlifting exercise sessions. Read more about this study
- Who is it for?
- Ages 18 to 30 years, men only
- Conditions the study is for
- Resistance Exercise
- What is being tested?
- Diet
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 8 participants
- Where
- 1 siteUnited States
- Study dates
- 19 Jul 2024to 20 Dec 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 30 years
- Men only
- No healthy volunteers
- Adult
Who may be able to join
- 3 years of resistance training experience
Who cannot join
- 1+ American College of Sports Medicine sign(s) or symptom(s) of cardiovascular, metabolic or renal disease(s)
- musculoskeletal disorder(s)
- lactose intolerance; soy or dairy allergies
Trial locations and contacts
1 site in 1 country.
United States1 site
South Dakota State University
Brookings, South Dakota, 57006
About this study
This research project will determine how restricting Calories to lose weight affects your ability to recover between weightlifting exercise sessions.
- Conditions
- Resistance Exercise
- Being tested
- Diet
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DietBehavioural
15 kcal per kg fat-free mass
DietBehavioural
45 kcal per kg fat-free mass
| Study group | Role | What they receive |
|---|---|---|
| CONTROL | Active comparator | Not described Receives: Behavioral: Diet |
| LOW ENERGY AVAILABILITY | Experimental | Not described Receives: Behavioral: Diet |
What is being measured
The primary outcome is the main question the study is designed to answer.
Vertical Jump Performance
Measured: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Knee Extension and Flexion Repetitions to Failure
Measured: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Bench Press One-Repetition Maximum
Measured: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Peak Knee Extension and Flexion Torques
Measured: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Oct 2024
- Study start19 Jul 2024
- Primary completion20 Dec 2024
- Study completion20 Dec 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Resistance ExerciseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 8 participants (actual)
Sponsor and investigators
- Lead sponsor
- Chaise Murphy
- Sponsor type
- University, hospital or other
- Collaborators
- South Dakota State University
- Responsible party
- Sponsor-investigator, Chaise Murphy, South Dakota State University
- Investigators
- Chaise A Murphy, Ph.D., Principal investigator, South Dakota State University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06623747
- Sponsor's protocol ID
- IRB-2024-43
- Acronym
- LEAR
- Status last verified
- Oct 2025
- First submitted
- 24 Sep 2024
- Last updated
- 12 Feb 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: As of right now, I have no collaborators to share the data with.
Study at a glance
From the registry record, last updated by the sponsor on 12 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Low Energy Availability and Recovery From Resistance Exercise
- ClinicalTrials.gov ID
- NCT06623747
- Acronym / sponsor ID
- LEAR / IRB-2024-43
- Conditions
- Resistance Exercise
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 8 participants (actual)
- Lead sponsor
- Chaise MurphyUniversity, hospital or other
- Collaborators
- South Dakota State University
- Study start
- 19 Jul 2024 (actual)
- Primary completion
- 20 Dec 2024 (actual)
- Study completion
- 20 Dec 2024 (actual)
- First posted
- 2 Oct 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This research project will determine how restricting Calories to lose weight affects your ability to recover between weightlifting exercise sessions.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| CONTROL | Active comparator | Behavioral: Diet |
| LOW ENERGY AVAILABILITY | Experimental | Behavioral: Diet |
Who may qualify
- Ages
- 18 to 30 years
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- 3 years of resistance training experience
Key exclusion criteria (3 listed)
- 1+ American College of Sports Medicine sign(s) or symptom(s) of cardiovascular, metabolic or renal disease(s)
- musculoskeletal disorder(s)
- lactose intolerance; soy or dairy allergies
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Diet15 kcal per kg fat-free mass | Behavioural | LOW ENERGY AVAILABILITY |
| Diet45 kcal per kg fat-free mass | Behavioural | CONTROL |
Primary outcome
Vertical Jump Performance
Time frame: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Knee Extension and Flexion Repetitions to Failure
Time frame: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Bench Press One-Repetition Maximum
Time frame: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Peak Knee Extension and Flexion Torques
Time frame: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Feb 2026.
- Individual participant dataSharing planned: No. As of right now, I have no collaborators to share the data with.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Chaise A Murphy, Ph.D. principal investigator
South Dakota State University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Diet in people with Resistance Exercise, run by Chaise Murphy at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 12 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Vertical Jump Performance (time frame: At enrollment (baseline), wait 1-2 weeks, before and after first 2-day condition, wait 1-2 weeks, before and after second 2-day condition). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Feb 2026.