Low Back PainBreastFirmneNCT06977919
NASM OPT for Pectoral Enhancement and Breast Firmness
A study testing NASM OPT Program and General Exercise in people with Low Back Pain and Muscle Weakness, run by University of Sistan and Baluchestan at 1 site in Iran.
Trial summary
This RCT investigates a 12-week NASM OPT program targeting pectoral muscle strength, breast aesthetics (firmness, lift, chest circumference), and low back pain in 120 non-athletic women. The intervention group performed structured resistance training, while the control group engaged in general exercise. Read more about this study
- Who is it for?
- Ages 20 to 45 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Low Back Pain, Muscle Weakness, Breast Sagging
- What is being tested?
- NASM OPT Program and General Exercise
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 120 participants
- Where
- 1 siteIran
- Study dates
- 1 May 2025to 30 Apr 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 20 to 45 years
- Women only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Non-athletic women (no exercise in prior 6 months).
- Interest in improving chest aesthetics.
- No musculoskeletal injuries.
Who cannot join
- Pregnancy
- Chronic illness
- Exercise contraindications
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Efficacy of a 12-Week NASM Optimum Performance Training Program on Pectoral Muscle Strength, Breast Aesthetics, and Low Back Pain in Non-Athletic Women: A Randomized Controlled Trial
This RCT investigates a 12-week NASM OPT program targeting pectoral muscle strength, breast aesthetics (firmness, lift, chest circumference), and low back pain in 120 non-athletic women. The intervention group performed structured resistance training, while the control group engaged in general exercise. Outcomes included pectoral strength (dynamometer), aesthetic satisfaction (Likert scale), and functional performance (push-up test).
Read the detailed description
Participants were randomized to NASM OPT (3 weekly sessions: stabilization, strength, and hypertrophy phases) or general exercise (brisk walking/aerobics). Measurements at baseline and 12 weeks included pectoral strength, chest circumference, low back pain (VAS), and perceived breast aesthetics.
- Conditions
- Low Back Pain, Muscle Weakness, Breast Sagging
- Being tested
- NASM OPT Program, General Exercise
- Keywords
- NASM OPT, Pectoral Muscles, Breast Firmness, Non-Athletic Women, Resistance Training
- Medical subject headings
- Low Back Pain, Muscle Weakness
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
NASM OPT ProgramBehavioural
Also called Experimental
Three 60-minute weekly sessions for 12 weeks, progressing through stabilization (weeks 1-4), strength endurance (weeks 5-8), and hypertrophy (weeks 9-12) phases. Exercises included bench presses, chest flyes, and push-ups.
General ExerciseBehavioural
Also called Active Comparator
Three 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training.
| Study group | Role | What they receive |
|---|---|---|
| NASM OPT Group | Experimental | Three 60-minute weekly sessions for 12 weeks, progressing through stabilization (weeks 1-4), strength endurance (weeks 5-8), and hypertrophy (weeks 9-12) phases. Exercises included bench presses, chest flyes, and push-ups. Receives: Behavioral: NASM OPT Program |
| General Exercise Group | Active comparator | Three 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training. Receives: Behavioral: General Exercise |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pectoral Strength
Kilogram (kg); handheld dynamometer
Measured: Baseline
Perceived Breast Firmness/Lift
5-point Likert scale
Measured: Baseline
Chest Circumference
Centimeter (cm)
Measured: Baseline
Aesthetic Satisfaction
5-point Likert scale
Measured: Baseline
Functional Performance
30-second push-up test
Measured: Baseline
Low Back Pain
VAS, 0-10 cm
Measured: Baseline
Secondary outcomes (6)
Aesthetic Satisfaction
5-point Likert scale
Measured: After12 weeks (post-intervention)
Functional Performance
30-second push-up test
Measured: After12 weeks (post-intervention)
Low Back Pain
VAS, 0-10 cm
Measured: After12 weeks (post-intervention)
Pectoral Strength
Kilogram (kg); handheld dynamometer
Measured: After12 weeks (post-intervention)
Perceived Breast Firmness/Lift
5-point Likert scale
Measured: After12 weeks (post-intervention)
Chest Circumference
Centimeter (cm)
Measured: After12 weeks (post-intervention)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 May 2025
- Study start1 May 2025
- Primary completion15 Sep 2025
- Study completion30 Apr 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Low Back PainStudies 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 120 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Sistan and Baluchestan
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mohammadreza Rezaeipour, University of Sistan and Baluchestan
- Investigators
- Mohammadreza Rezaeipour, MD, PhD, Study director, Assoc.Prof.Dr.
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06977919
- Sponsor's protocol ID
- 9378-30-3-2025
- Acronym
- BreastFirmne
- Status last verified
- Apr 2026
- First submitted
- 10 May 2025
- Last updated
- 6 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Privacy concerns regarding sensitive participant data.
Study at a glance
From the registry record, last updated by the sponsor on 6 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Efficacy of a 12-Week NASM Optimum Performance Training Program on Pectoral Muscle Strength, Breast Aesthetics, and Low Back Pain in Non-Athletic Women: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT06977919
- Acronym / sponsor ID
- BreastFirmne / 9378-30-3-2025
- Conditions
- Low Back Pain, Muscle Weakness, Breast Sagging
- Keywords
- NASM OPT, Pectoral Muscles, Breast Firmness, Non-Athletic Women, Resistance Training
- Study type
- Interventional
- Recruitment status
- Enrolling by invitation
- Enrolment
- 120 participants (estimated)
- Lead sponsor
- University of Sistan and BaluchestanUniversity, hospital or other
- Study start
- 1 May 2025 (actual)
- Primary completion
- 15 Sep 2025 (actual)
- Study completion
- 30 Apr 2026 (estimated)
- First posted
- 18 May 2025 (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 RCT investigates a 12-week NASM OPT program targeting pectoral muscle strength, breast aesthetics (firmness, lift, chest circumference), and low back pain in 120 non-athletic women. The intervention group performed structured resistance training, while the control group engaged in general exercise. Outcomes included pectoral strength (dynamometer), aesthetic satisfaction (Likert scale), and functional performance (push-up test).
Detailed description
Participants were randomized to NASM OPT (3 weekly sessions: stabilization, strength, and hypertrophy phases) or general exercise (brisk walking/aerobics). Measurements at baseline and 12 weeks included pectoral strength, chest circumference, low back pain (VAS), and perceived breast aesthetics.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| NASM OPT Group | Experimental | Behavioral: NASM OPT ProgramThree 60-minute weekly sessions for 12 weeks, progressing through stabilization (weeks 1-4), strength endurance (weeks 5-8), and hypertrophy (weeks 9-12) phases. Exercises included bench presses, chest flyes, and push-ups. |
| General Exercise Group | Active comparator | Behavioral: General ExerciseThree 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training. |
Who may qualify
- Ages
- 20 to 45 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Non-athletic women (no exercise in prior 6 months).
- Interest in improving chest aesthetics.
- No musculoskeletal injuries.
Key exclusion criteria (3 listed)
- Pregnancy
- Chronic illness
- Exercise contraindications
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 |
|---|---|---|
| NASM OPT ProgramAlso: ExperimentalThree 60-minute weekly sessions for 12 weeks, progressing through stabilization (weeks 1-4), strength endurance (weeks 5-8), and hypertrophy (weeks 9-12) phases. Exercises included bench presses, chest flyes, and push-ups. | Behavioural | NASM OPT Group |
| General ExerciseAlso: Active ComparatorThree 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training. | Behavioural | General Exercise Group |
Primary outcome
Pectoral Strength
Time frame: Baseline
Kilogram (kg); handheld dynamometer
Perceived Breast Firmness/Lift
Time frame: Baseline
5-point Likert scale
Chest Circumference
Time frame: Baseline
Centimeter (cm)
Aesthetic Satisfaction
Time frame: Baseline
5-point Likert scale
Functional Performance
Time frame: Baseline
30-second push-up test
Low Back Pain
Time frame: Baseline
VAS, 0-10 cm
6 secondary outcomes
Aesthetic Satisfaction
Time frame: After12 weeks (post-intervention)
Functional Performance
Time frame: After12 weeks (post-intervention)
Low Back Pain
Time frame: After12 weeks (post-intervention)
Pectoral Strength
Time frame: After12 weeks (post-intervention)
Perceived Breast Firmness/Lift
Time frame: After12 weeks (post-intervention)
Chest Circumference
Time frame: After12 weeks (post-intervention)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 May 2026.
- Individual participant dataSharing planned: No. Privacy concerns regarding sensitive participant data.
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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.
Mohammadreza Rezaeipour, MD, PhD study director
Assoc.Prof.Dr.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing NASM OPT Program and General Exercise in people with Low Back Pain and Muscle Weakness, run by University of Sistan and Baluchestan at 1 site in Iran.
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 3 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: enrolling by invitation, as of the sponsor's last update on 6 May 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 Iran. 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?
This study is still under way. Results are not available in the source record yet.
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?
Pectoral Strength (time frame: Baseline). The study lists 6 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 6 May 2026.