Effect of Rg1-based Supplementation on Exercise Training-induced Stem Cell Recruitments and Skeletal Muscle Adaptation in Women Aged > 60 (Senactiv)

July 20, 2026 updated by: Chia-Hua Kuo, University of Taipei
This study will provide novel insights into the role of bone marrow-derived stem cells in muscle adaptation to long-term exercise and advance our understanding of an Rg-1 based supplement-Senactiv® as a potential intervention for preventing sarcopenia and cognitive decline in older adults.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

Background: We have recently observed increased mesenchymal stem cells (Stro-1+ MSCs) in exercised skeletal muscle in women > 60 years following consumption of a ginseng-derived Rg1-based supplement (Senactiv®). A substantial proportion of these mobilized stem cells differentiated into neural stem cells (Nestin+). Exercise-induced sex hormone depletion is completely attenuated. Together with our earlier finding that Senactiv® reduced perceived exertion during resistance exercise in young men, these results suggest that the supplement may enhance brain-muscle connection/rewiring to improve performance. This acute, single-dose study raises the important question of whether long-term Senactiv® consumption can augment muscle strength and mass in older women engaged in resistance training, a population at high risk of progressing into sarcopenia.

Study Design: To address this, we will conduct a 12-week, two-arm, randomized, double-blind, placebo-controlled trial. Primary and secondary outcomes will include muscle strength, perceived exertion, muscle mass, grip strength and sitting-rising test, sex hormones, Nestin+ neural stem cells, mitochondria-rich phagocytes (MPO-expressing cells), transcriptomic changes (RNA-seq) focusing on age-related biomarkers, bone marrow-derived cells and cognitive function. Skeletal muscle tissue will be analyzed using minimally invasive micro-biopsy at three time points: pre-exercise baseline, immediately after the first exercise bout (0 h, acute response), and 48 hours after the final training session (long-term adaptation). Cognitive function will be comprehensively assessed using available campus resources.

Study Type

Interventional

Enrollment (Estimated)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

- Must be able to swallow pills

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Placebo
Behavioral: Resistance exercise
4 sets of 8-RM leg squats
Experimental: Senactiv
Rg1-based supplement
Behavioral: Resistance exercise
4 sets of 8-RM leg squats

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Bone marrow derived cells in skeletal muscle
Time Frame: * 3 weeks before exercise (baseline) * Immediately after exercise (0 hour) * 1-hour after exercise (1 h) * 24-hour after exercise (24 h)
Cell markers with bone marrow identity
* 3 weeks before exercise (baseline) * Immediately after exercise (0 hour) * 1-hour after exercise (1 h) * 24-hour after exercise (24 h)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Taipei

Collaborators

Education University of Hong Kong

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

August 2, 2026

Primary Completion (Estimated)

January 2, 2029

Study Completion (Estimated)

January 2, 2029

Study Registration Dates

First Submitted

July 9, 2026

First Submitted That Met QC Criteria

July 9, 2026

First Posted (Actual)

July 14, 2026

Study Record Updates

Last Update Posted (Actual)

July 22, 2026

Last Update Submitted That Met QC Criteria

July 20, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2025-2026-0067

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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