NASM OPT for Pectoral Enhancement and Breast Firmness
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: NASM OPT Program, General Exercise.
- Who it may be relevant to
- Registry conditions: Low Back Pain, Muscle Weakness, Breast Sagging. Basic parameters: 20 years — 45 years · Female.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Iran
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
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
Overview
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.
Interventions
- Behavioral NASM OPT Program
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. - Behavioral General Exercise
Three 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training.
Primary outcome measures
- Pectoral Strength [Time frame: Baseline]
- Perceived Breast Firmness/Lift [Time frame: Baseline]
- Chest Circumference [Time frame: Baseline]
- Aesthetic Satisfaction [Time frame: Baseline]
- Functional Performance [Time frame: Baseline]
- Low Back Pain [Time frame: Baseline]
Secondary outcome measures (6)
- 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)]
Eligibility criteria
Inclusion criteria
- Non-athletic women (no exercise in prior 6 months).
- Interest in improving chest aesthetics.
- No musculoskeletal injuries.
Exclusion criteria
- Pregnancy
- Chronic illness
- Exercise contraindications
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Single blind
- Primary purpose
- Treatment
Study locations
Iran · 1 center
- Sport Sciences Department — Zahedan
Identifiers
NCT: NCT06977919 · 9378-30-3-2025