Isotonic vs Isokinetic Leg Extensions: Differences in Neuromuscular Function

Isotonic vs Isokinetic Leg Extensions: Differences in Neuromuscular Function

Why is this research being done?
This research is examining how changes in muscle oxygenation influence performance in young adults. Typically, exercise protocols with blood flow restriction are done an isotonic exercise machine, however this is not typical for gym equipment. This study will compare neuromuscular differences elicited by an isotonic leg extension machine versus an isokinetic dynamometer.

How long will the research last and what will I need to do?
There are 4 total visits that we expect will occur for an 8–21-day period. The first visit will require approximately 30 minutes of time and the following three visits will be approximately 60 minutes each. Total time for the entire study is approximately 3 hours and 30 minutes spread out over different 4 days.

Inclusion Qualifications:

  • Female between the ages of 18 to 35
  • Trained or untrained individuals
  • Trained individuals are defined as: meeting the ACSM standards for recreationally active individuals of exercising ≥ 150 minutes exercise/week.
  • Willing to come in for all testing visits
  • No known cardiovascular, pulmonary, metabolic, muscular, and/or coronary heart disease
  • Do not regularly use prescription medication (not including contraceptives)
  • Are not currently seeking medical care
  • Are not currently pregnant

Exclusion Qualifications:

You may not participate in this research opportunity if any of the following applies to you:
  • Male individuals
  • Do not meet the resistance training experience requirements (≥ 150 minutes exercise/week)
  • Lack of transportation to and from the laboratory
  • Regular use of prescription medication
  • Arthritis in the upper or lower extremities (hands, arms, shoulders, hips, knees, ankles)
  • Use of anabolic steroids within the previous year
  • History of cancer
  • History of stroke
  • History of heart attack
  • History of cardiovascular, pulmonary, metabolic, muscular, and/or coronary heart disease
  • Pregnant women
  • Any other health related illnesses that would prohibit a participant from physical performance testing

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UCF IRB#: STUDY00003207
PI: Paola Rivera
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Recruitment End Date:
November 23, 2021
Education Complex
12494 University Blvd
Orlando, FL 32816
Time Commitment:
Number of visits: 4
Expected time per visit: 1 hours
Point of Contact:
Paola Rivera
Faculty Advisors:
Ethan Hill
Associated Units:
Athletic Training
Health Sciences
Physical Therapy
Exercise Physiology & Rehabilitation Science
Related Tags:
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