NCT06977958

Brief Summary

This RCT evaluates a 12-week NASM OPT program targeting gluteal muscle strength, hip aesthetics (shape, lift, 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 gluteal strength (dynamometer), aesthetic satisfaction (Likert scale), and functional performance (squat test).

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
120

participants targeted

Target at P75+ for not_applicable low-back-pain

Timeline
1mo left

Started Feb 2025

Typical duration for not_applicable low-back-pain

Geographic Reach
1 country

1 active site

Status
enrolling by invitation

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress95%
Feb 2025May 2026

Study Start

First participant enrolled

February 1, 2025

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

May 10, 2025

Completed
8 days until next milestone

First Posted

Study publicly available on registry

May 18, 2025

Completed
8 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 15, 2026

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

May 30, 2026

Expected
Last Updated

May 6, 2026

Status Verified

April 1, 2026

Enrollment Period

12 months

First QC Date

May 10, 2025

Last Update Submit

April 29, 2026

Conditions

Low Back PainMuscle WeaknessBody Image Disturbance

Keywords

NASM OPTGluteal MusclesHip AestheticsNon-Athletic WomenResistance Training

Outcome Measures

Primary Outcomes (6)

  • Gluteal Strength

    kg; handheld dynamometer

    Baseline

  • Perceived Hip Shape/Lift

    5-point Likert scale

    Baseline

  • Hip Circumference

    cm

    Baseline

  • Aesthetic Satisfaction

    5-point Likert scale

    Baseline

  • Functional Performance

    30-second squat test

    Baseline

  • Low Back Pain

    VAS, 0-10 cm

    Baseline

Secondary Outcomes (6)

  • Aesthetic Satisfaction

    After 12 weeks

  • Functional Performance

    After 12 weeks

  • Low Back Pain

    After 12 weeks

  • Gluteal Strength

    After12 weeks (post-intervention)

  • Perceived Hip Shape/Lift

    After12 weeks (post-intervention)

  • +1 more secondary outcomes

Study Arms (2)

NASM OPT Group

EXPERIMENTAL

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 hip thrusts, squats, and glute bridges.

Behavioral: NASM OPT Group

General Exercise Group

ACTIVE COMPARATOR

Behavioral: General Exercise Three 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training.

Behavioral: General Exercise Group

Interventions

NASM OPT GroupBEHAVIORAL

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 hip thrusts, squats, and glute bridges.

NASM OPT Group
General Exercise GroupBEHAVIORAL

Three 60-minute weekly sessions of brisk walking and light aerobics without targeted resistance training.

General Exercise Group

Eligibility Criteria

Age20 Years - 45 Years
Sexfemale(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Non-athletic women (no exercise in prior 6 months).
  • Interest in improving hip aesthetics.
  • No musculoskeletal injuries.

You may not qualify if:

  • Pregnancy
  • Chronic illness
  • Exercise contraindications

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Ferdows Shafa Center

Ferdows, South Khorasan Province, Iran

Location

MeSH Terms

Conditions

Low Back PainMuscle Weakness

Condition Hierarchy (Ancestors)

Back PainPainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsMuscular DiseasesMusculoskeletal DiseasesNeuromuscular ManifestationsNervous System DiseasesPathologic Processes

Study Officials

  • Mohammadreza Rezaeipour, MD, PhD

    Assoc.Prof.Dr. of University of Sistan and Baluchestan, Zahedan, Iran

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
Single-blind (outcome assessors only; participants/instructors unblinded due to intervention nature).
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assoc.Prof.Dr. of Sports Sciences

Study Record Dates

First Submitted

May 10, 2025

First Posted

May 18, 2025

Study Start

February 1, 2025

Primary Completion

January 15, 2026

Study Completion (Estimated)

May 30, 2026

Last Updated

May 6, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Privacy concerns regarding sensitive participant data.

Locations

IR(1)