The Effects of Fatigue on Exercise-Induced Hypoalgesia

The purpose of this study is to understand how different intensities (or how hard an exercise is) of a leg exercise with weights potentially change your threshold for pain. We also want to understand how different psychological factors, such as fear, and other factors, such as sleep or physical activity, can be used to predict the amount of pain reduction after resistance exercise.

During this study, you will attend three sessions that are about 30 minutes-1 hour each in which you will complete forms and undergo assessment of your pain sensitivity through exposure to heat, cold, and pressure stimuli. You will be performing a knee extension exercise of your dominant leg for 3 sets at different fatiguing levels.

Inclusion Qualifications:

Pain-free
18-60 years old
Participant can appropriately perform the knee extension exercise (assessed during screening)

Exclusion Qualifications:

You may not participate in this research opportunity if any of the following applies to you:

Regular use of prescription pain medications
Current or history of chronic pain condition
Currently taking blood-thinning medication
Systemic medical condition known to affect sensation, such as uncontrolled diabetes or neurological conditions
Any contraindication to the application of ice, such as: uncontrolled hypertension (blood pressure over 140/90 mmHg), cold urticaria, cryoglobulinemia, paroxysmal cold hemoglobinuria, circulatory compromise
Known presence of cardiovascular, pulmonary, or metabolic disease
Current use of tobacco products
Not physically ready to exercise without a medical exam as indicated by the Physical Activity Readiness Questionnaire Plus (PAR-Q+)
Surgery, injury, or fracture to the lower back or lower extremity within the past 6 months

Participate in this Research

Submitting this form will put you in contact with the main point of contact for this project. They will provide more information and determine if you meet all of the qualifications needed.