The primary purpose of this study is to to compare immediate changes in pressure pain threshold at the exercising muscle (quadriceps) and a non-exercising muscle (upper trapezius) during low and high weight knee extension exercise. Participants will attend one session that consists of pain sensitivity testing, completion of pain-related psychological questionnaires, and random assignment to one of three interventions: 1) knee extension exercise with a high weight, 2) knee extension exercise with a low weight, or 3) quiet rest.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
60
Participants will be seated in a resistance exercise machine. Weight corresponding to the assigned group will be added to the machine. Participants will extend the dominant knee for 3 sets of 10 repetitions.
University of Central Florida
Orlando, Florida, United States
Pressure Pain Threshold
A digital pressure algometer will be applied to the quadriceps and upper trapezius for two trials each. Participants are instructed to say "stop" or "pain" so the stimulus can be terminated "when the sensation first transitions from pressure to pain" (pain threshold). Participants will rate the pain experienced during the threshold testing using a 101-point numeric pain rate scale (NPRS) anchored with 0= no pain to 100= the most intense pain sensation imaginable immediately following each testing time.
Time frame: 1 day
Conditioned Pain Modulation
Pressure pain threshold after an cold water immersion task will be measured.
Time frame: 1 day
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.