This study aims to investigate the relationship between knee joint range of motion and pain in patients with patellofemoral pain syndrome (PFPS). In a cross-sectional observational design, PFPS patients will perform trials involving progressively increased knee joint range of motion in three closed-chain exercises: squat, single-leg squat, and split squat. During each trial, participants will report pain levels on a 0-10 Visual Analog Scale (VAS) until either (1) achieving full depth in the respective exercise or (2) reaching a pain level of \>5 on the VAS.
Study Type
OBSERVATIONAL
Enrollment
15
Exercise with progressively increased range of motion.
Linnaues University
Kalmar, Sweden
RECRUITINGPain (VAS)
Pain measured 0-10 visual analog scale (VAS) reported during each trial of progressively increased range of motion during a single session.
Time frame: Day 1 (Cross sectional single session. Outcomes will be collected during one single session for each participant.)
Range of motion
Degrees of knee flexion measured during each trial in one single session.
Time frame: Day 1 (Cross sectional single session. Outcomes will be collected during one single session for each participant.)
Force
Force (N) (peak value) reported during the different trials in one session. Measured by force plates.
Time frame: Day 1 (Cross sectional single session. Outcomes will be collected during one single session for each participant.)
Tegner Activity Scale (TAS)
The Tegner Activity Scale (TAS) will be used to assess the physical activity levels of the participants. Scale from 1-10 where 10 is highest possible physical activity and 1 is sedentary.
Time frame: Baseline (Administered at the beginning of the study)
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