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