Skip to main content
OpenTrials
Completed

NCT Number: NCT06976060

High-Intensity Interval Training in a Community Gym

This study will deliver a 9 week high intensity interval training (HIIT) class using functional movements within a community based gym. The class will be twice a week. Outcomes are focused on cardiovascular endurance, balance, strength and muscle size and muscle quality changes. The outcomes will be assessed weekly.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Age-related Strength Loss

Age range

50 year–95 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

UNMC Engage Wellness Medical Fitness Center

Omaha, Nebraska, 68105, United States

About this study

We will measure cardiovascular endurance (2-minute Step Test; 2MST), balance (Functional Gait Assessment; FGA), muscular strength (Grip Strength and 5 times sit-to-stand; 5xSTS) and muscle size (thickness) and quality (echo intensity) on a weekly basis over the 9 week HIIT class.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • no contraindications to exercise (PAR-Q+)
  • do not have severe mental impairment (>14 on the SAGE)
  • ability to walk 100 ft without the use of an assistive device

Treatment and study plan

High-intensity interval training

Behavioral

High-intensity interval training (HIIT) sessions will occur twice per week, on non-consecutive days. Each training session will last 45-60 minutes and consist of eight functional movement exercises incorporating the entire body (upper body, lower body, core/stability, cycling, and agility). Participants will complete two rounds of the 8-exercise circuit with 2-minutes of rest between rounds. The load/resistance used for each exercise will be self-selected by the participants that equates to 15-18 on the RPE scale. During each round, participants will have 1 minute to complete as many repetitions as possible of a given exercise and then have 1 minute of rest before completing the next exercise - giving the participants a 1:1 exercise-to-rest ratio.

Primary outcomes

  1. 2-minute Step Test Performance

    Time frame: Baseline and weekly over the 9 week intervention

    Cardiovascular endurance metric, number of repetitions a single leg is able to complete in 2 minutes.

Secondary outcomes

  1. Functional Gait Asssessment

    Time frame: Baseline and weekly over the 9 week intervention

    Balance metric, reporting the score out of 30 points

  2. 5 times sit to stand

    Time frame: Baseline and weekly over the 9 week intervention

    Lower extremity muscular strength. Recording the amount of time to complete 5 sit to stand repetitions.

  3. Grip Strength

    Time frame: Baseline and weekly over the 9 week intervention

    Upper Extremity Strength assessment. Peak grip strength measured with hand held dynamometer.

  4. Muscle Thickness

    Time frame: Baseline and weekly over the 9 week intervention

    Muscle thickness will be recorded via ultrasound

  5. Muscle Echo Intensity

    Time frame: Baseline and weekly over the 9 week intervention

    Ultrasound images of the vastus lateralis will be obtained and echo intensity for the muscle will be assessed.

Sponsors and collaborators

Lead sponsor

Creighton University

Other

Registry information

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
May 16, 2025
Registry last updated
Sep 22, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.