This study investigates the evolution of sensory, motor and tissue variables following exercise-induced pain in wrist extensor muscles in healthy subjects.
The aim of this study is to determine how is the normalization process of sensory (pressure pain thresholds, subjective pain sensation, self-recovery perception), motor (maximal isometric strength, active range of motion, manual dexterity) and tissue (myotonometer) variables after an experimental pain model in the extensor forearms muscles, by delayed onset muscle soreness after an eccentric exercise in healthy subjects. This way will be possible to establish 1) if there are differences in the time of normalization for each variable; 2) if there is a correlation between each variable and self-recovery perception. Seven assessment sessions are performed in a 14-days period. Day 0 (baseline assessment 1), Day 7 (baseline assessment 2, pre exercise), Day 7 (post exercise), Day 8 (24-hours post exercise), Day 9 (48-hours post exercise), Day 10 (72-hours post exercise), Day 14 (1-week post exercise).
Study Type
OBSERVATIONAL
Enrollment
30
Universidad San Jorge
Villanueva de Gállego, Zaragoza, Spain
Changes in Pressure Pain Thresholds: pressure algometry
Changes in pressure pain thresholds will be determined with pressure algometry bilaterally over the forearm, leg and shoulder. Pressure Pain Threshold is defined as the exact time point where the pressure is first being perceived at painful.
Time frame: Day-1 (baseline assessment 1), Day-7 (baseline assessment 2, pre exercise), Day-7 (post-exercise), Day-8 (24 hours post-exercise), Day-9 (48 hours post-exercise), Day-10 (72 hours post-exercise), Day-14 (1-week post-exercise).
Changes in subjective perception of pain and recovery: Likert Scale
A modified 7-item Likert Scale for pain ("0" No pain - "6" Severely disabling pain) and a visual analogue scale (0-10 cm) for self-recovery perception will be filled up to show subjective perception along the follow-up period.
Time frame: Day-1 (baseline assessment 1), Day-7 (baseline assessment 2, pre exercise), Day-7 (post-exercise), Day-8 (24 hours post-exercise), Day-9 (48 hours post-exercise), Day-10 (72 hours post-exercise), Day-14 (1-week post-exercise).
Changes in mechanical properties of the muscle
Changes in mechanical properties of the muscle will be determined with myotonometer bilaterally over the forearm.
Time frame: Day-1 (baseline assessment 1), Day-7 (baseline assessment 2, pre exercise), Day-7 (post-exercise), Day-8 (24 hours post-exercise), Day-9 (48 hours post-exercise), Day-10 (72 hours post-exercise), Day-14 (1-week post-exercise).
Changes in manual dexterity
Changes in manual dexterity of both upper limbs will be assessed by the Nine Hole Peg Test. Participants will had to place 9 pegs in a specifically designed board as fast as possible.
Time frame: Day-1 (baseline assessment 1), Day-7 (baseline assessment 2, pre exercise), Day-7 (post-exercise), Day-8 (24 hours post-exercise), Day-9 (48 hours post-exercise), Day-10 (72 hours post-exercise), Day-14 (1-week post-exercise).
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Changes in maximal isometric force
Changes in wrist extensors maximal isometric strength will be assessed with hand-held dynamometry.
Time frame: Day-1 (baseline assessment 1), Day-7 (baseline assessment 2, pre exercise), Day-7 (post-exercise), Day-8 (24 hours post-exercise), Day-9 (48 hours post-exercise), Day-10 (72 hours post-exercise), Day-14 (1-week post-exercise).
Changes in active range of motion
Changes in active range of motion of the wrist will be assessed in both sides using a digital inclinometer.
Time frame: Day-1 (baseline assessment 1), Day-7 (baseline assessment 2, pre exercise), Day-7 (post-exercise), Day-8 (24 hours post-exercise), Day-9 (48 hours post-exercise), Day-10 (72 hours post-exercise), Day-14 (1-week post-exercise).
Level of catastrophizing
Punctuation obtained in Pain Catastrophizing Scale (PCS). It comprises 13 items which focus on thoughts and feelings encountered while experiencing pain. Each item is scored from 0 (not at all) to 4 (all the time) with a total PCS score range from 0-52 points, where higher scores indicating higher levels of pain catastrophizing.
Time frame: Day-1 (baseline), Day-14 (1-week post-exercise).