Study of 15% Versus 30% Velocity Loss Thresholds During Bodyweight Squats and Their Effects on Strength and Endurance in Young Women

March 4, 2026 updated by: Shiza Maryam, University of Health Sciences Lahore

Effect of 15% Versus 30% Intra-Set Velocity Loss Thresholds During Bodyweight Squats on Lower-Limb Strength and Muscular Endurance in Non-Athletic Young Female Adults.

The goal of this clinical trial is to learn how two different velocity loss thresholds (15% and 30%) during bodyweight squats affect strength and endurance in non-athletic young women aged 18-25 years.

The main questions it aims to answer are:

Does a lower velocity loss threshold (15%) during bodyweight squats improve lower-limb strength? Does a higher velocity loss threshold (30%) during bodyweight squats improve muscular endurance? Researchers will compare the two groups (15% vs. 30% velocity loss) to see if one approach works better for strength and endurance.

Participants will:

Perform bodyweight squats three times per week for six weeks. Be randomly assigned to either the 15% or 30% velocity loss group. Complete strength and endurance tests before and after the program

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

This randomized controlled trial will examine the effects of two intra-set velocity loss (VL) thresholds, 15% and 30%, during bodyweight squats on lower-limb strength and muscular endurance in non-athletic young female adults. Velocity-based resistance training (VBRT) is increasingly used to regulate training intensity and volume, but most existing evidence comes from trained male athletes performing loaded exercises. There is limited research on accessible, equipment-free protocols such as bodyweight squats, particularly in underrepresented populations such as non-athletic young women.

A total of 52 female university students aged 18-25 years will be recruited using the International Physical Activity Questionnaire-Short Form (IPAQ-SF). Participants will be randomly assigned to either the 15% Velocity Loss group or the 30% Velocity Loss group, with 26 participants per group. Both groups will perform bodyweight squat sessions three times per week for six weeks.

Outcomes will be assessed before and after the intervention by a blinded assessor. Primary outcomes include lower-limb strength and muscular endurance. Data will be analyzed using Statistical Package for the Social Sciences (SPSS) version 27, with statistical significance set at p < 0.05.

The study aims to determine whether a lower Velocity Loss threshold (15%) produces comparable improvements in strength and endurance to a higher Velocity Loss threshold (30%) when using bodyweight squats. Findings will provide evidence to guide physiotherapists, exercise professionals, and health educators in designing safe, accessible, and effective training programs for non-athletic young women.

Study Type

Interventional

Enrollment (Estimated)

52

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

Study Locations

  • Pakistan
    • Punjab Province
      • Lahore, Punjab Province, Pakistan, 39350
        • Recruiting
        • University of Health Sciences
        • Contact:
          • Dr. Wajeeha Mahmood PT, PhD(scholar),MSNMPT,PPDPT,BSPT
          • Phone Number: +92 334 9867317
          • Email: higheraimz@hotmail.com
        • Principal Investigator:
          • Shiza Maryam, DPT

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

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Female participants
  • 18-25 Years
  • Body Mass Index less than 30 kg/m²
  • Low physical activity level
  • Able to perform body weight squats without pain or assistance

Exclusion Criteria:

  • Recent Cardiovascular Disease
  • Current Patellar Injury
  • Recent Musculoskeletal Injuries
  • Current Pregnancy or Postpartum Period within the last 6 months
  • Participation in resistance or endurance training programs in the past 6 months.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 15% Velocity Loss Group
Participants will perform body-weight squats with intra-set velocity loss threshold of 15%, monitored using metronome cadence as a proxy for movement velocity.
Behavioral: Body-weight squat training (15% velocity loss threshold)
Participants will perform supervised body-weight squat training using an intra-set velocity loss threshold of 15%. Velocity loss will be monitored using standardized metronome cadence as a proxy for movement velocity. Training frequency, volume, and progression will be consistent across groups except for the velocity loss threshold.
Active Comparator: 30% Velocity Loss Group
Participants will perform body-weight squats with intra-set velocity loss threshold of 30%, monitored using metronome cadence as a proxy for movement velocity.
Behavioral: Body-weight squat training (30% velocity loss threshold)
Participants will perform supervised body-weight squat training using an intra-set velocity loss threshold of 30%. Velocity loss will be monitored using standardized metronome cadence as a proxy for movement velocity. Training frequency, volume, and progression will be consistent across groups except for the velocity loss threshold.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Lower-limb muscular strength
Time Frame: Baseline and Week 6
Total number of completed chair stands performed in 30 seconds, measured in repetitions.
Baseline and Week 6
Lower-limb muscular endurance
Time Frame: Baseline and Week 6
Total time maintaining the wall-sit position, measured in seconds.
Baseline and Week 6

Collaborators and Investigators

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

Sponsor

University of Health Sciences Lahore

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 (Actual)

February 22, 2026

Primary Completion (Estimated)

April 5, 2026

Study Completion (Estimated)

April 19, 2026

Study Registration Dates

First Submitted

February 24, 2026

First Submitted That Met QC Criteria

March 4, 2026

First Posted (Actual)

March 10, 2026

Study Record Updates

Last Update Posted (Actual)

March 10, 2026

Last Update Submitted That Met QC Criteria

March 4, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • UHS/USERC-26/SEC/89

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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