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Reliability and Validity of Muscle Strength Testing Devices

Research Objectives:
The purpose of this study is to determine how repeatable and valid knee strength measures are using three different strength-testing devices.

You will be asked to attend two (2) testing session (3-14 days apart) that will take 1.75 hours and 1.25 hour, respectively. All testing is non-invasive. You will be asked to perform knee strength tests with different devices and testers.

You may be eligible to participate in this study if:

  • You are between 18 and 60 years of age.
  • You do NOT have a current neck, back or leg injury.
  • You have NOT had knee or hip surgery within the last 3 months.
  • If you have had previous injuries or surgeries to your legs; your doctor has cleared you to return to normal activities including exercises for your legs.
  • You have a diagnosis of ARTHRITIS in your knees.
  • You are NOT restricted from performing strengthening exercises.
  • You CAN walk and climb stairs without using a cane or walker.

Subject will receive up to $40 dollars for completing both sessions.

3 Parkway Building,  2nd floor.
16th and Cherry on Drexel University’s Center City Campus,

To see if you qualify for this study, click the register button:


For a printable version of the flyer, click here to download

For more information contact Trey Brindle: (215) 553-7010 (

This research is approved by the Institutional Review Board.
This research is conducted by a researcher who is a member of Drexel University.

Office of Human Research
Protocol #1610004896A001
Approval Date: 02/28/2017
Expiration Date: 12/20/2017