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Feasibility of Lower-Body EMS Resistance Training in Postmenopausal Women

NCT07628790 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 16

Last updated 2026-07-28

No results posted yet for this study

Summary

This pilot randomized controlled trial evaluates whether combining lower-body electrical muscle stimulation (EMS) with resistance training is feasible and beneficial for physically inactive postmenopausal women, who experience concurrent declines in muscle strength, body composition, arterial elasticity, and cardiac autonomic balance.

Sixteen physically inactive postmenopausal women aged 50-70 years are randomly assigned (1:1) to either (A) supervised resistance training combined with lower-body EMS (applied to 6 muscle groups: lower back, lower abdomen, glutes, quadriceps, hamstrings, and calves) or (B) supervised resistance training alone. Both groups complete twelve 50-minute sessions (consisting of a 10-minute warm-up, 30-minute main exercise, and a 10-minute cool-down) over 6 weeks (twice weekly). Assessments before and after the intervention include body composition, lower-body muscle function, arterial stiffness, and 5-minute heart rate variability.

The primary aim is to determine the feasibility of the protocol(recruitment, retention, session attendance, and intervention dose delivery) to inform a future definitive trial. Preliminary estimates of intervention effects on the measured outcomes are reported as secondary aims.

Conditions

  • Post Menopausal
  • Resistance Exercise
  • Body Composition
  • Autonomic Function

Interventions

DEVICE

Lower-Body EMS combined with Resistance Training

Electrical muscle stimulation (85 Hz, 350 μs, cycle 11, duty approx 1:2) applied to 6 muscle groups: lower back (erector spinae), lower abdomen, glutes, quadriceps, hamstrings, and calves.

BEHAVIORAL

Resistance Training

A 50-minute session consisting of a 10-minute warm-up, 30 minutes of main exercise (8 machine-based lower-body resistance exercises, 3 sets of 8-12 repetitions), and a 10-minute cool-down.

Sponsors & Collaborators

  • Seoul National University

    lead OTHER

Principal Investigators

  • Yeon Soo Kim, MD, Prof · Seoul National University

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
50 Years
Max Age
70 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-06-01
Primary Completion
2026-07-27
Completion
2026-07-27

Countries

  • South Korea

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07628790 on ClinicalTrials.gov