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
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 入组人数
- 120
- 试验地点
- 1
- 主要终点
- Pectoral Strength
研究概览
简要总结
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).
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
Single-blind (outcome assessors only; participants/instructors unblinded due to intervention nature).
入排标准
- 年龄范围
- 20 Years 至 45 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Non-athletic women (no exercise in prior 6 months).
- •Interest in improving chest aesthetics.
- •No musculoskeletal injuries.
排除标准
- •Pregnancy
- •Chronic illness
- •Exercise contraindications
研究组 & 干预措施
NASM OPT Group
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.
干预措施: NASM OPT Program (Behavioral)
General Exercise Group
Three 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training.
干预措施: General Exercise (Behavioral)
结局指标
主要结局
Pectoral Strength
时间窗: Baseline
Kilogram (kg); handheld dynamometer
Perceived Breast Firmness/Lift
时间窗: Baseline
5-point Likert scale
Chest Circumference
时间窗: Baseline
Centimeter (cm)
Aesthetic Satisfaction
时间窗: Baseline
5-point Likert scale
Functional Performance
时间窗: Baseline
30-second push-up test
Low Back Pain
时间窗: Baseline
VAS, 0-10 cm
Pectoral Strength
时间窗: Baseline, 12 weeks
Kilogram (kg); handheld dynamometer
Perceived Breast Firmness/Lift
时间窗: Baseline, 12 weeks
5-point Likert scale
Chest Circumference
时间窗: Baseline, 12 weeks
Centimeter (cm)
次要结局
- Aesthetic Satisfaction(After12 weeks (post-intervention))
- Functional Performance(After12 weeks (post-intervention))
- Low Back Pain(After12 weeks (post-intervention))
- Pectoral Strength(After12 weeks (post-intervention))
- Perceived Breast Firmness/Lift(After12 weeks (post-intervention))
- Chest Circumference(After12 weeks (post-intervention))
- Aesthetic Satisfaction(Baseline, 12 weeks (post-intervention))
- Functional Performance(Baseline, 12 weeks (post-intervention))
- Low Back Pain(Baseline, 12 weeks (post-intervention))
研究者
Mohammadreza Rezaeipour
Assoc.Prof.Dr.
University of Sistan and Baluchestan