Basal measurements are taken in relation to the study variables. Immediately subjects perform eccentric exercise on right hamstrings to develop delayed onset muscle soreness (DOMS). Measurements of the study variables are taken in the same conditions 48, 96 and 168 hours after the exercise to study the evolution of the variables while recovering from DOMS.
Basal measurements are taken in relation to the study variables. The variables are: * pressure pain thresholds * electromyography values * static and dynamic plantar pressure measurement * active knee extensibility * maximal strength of knee flexors * thermography * scales of pain perception Immediately subjects perform eccentric exercise on right hamstrings to develop DOMS (delay onset muscle soreness). Measurements of the study variables are taken in the same conditions 48, 96 and 168 hours after the exercise to study the evolution of the variables while recovering from DOMS.
Study Type
OBSERVATIONAL
Enrollment
24
Universidad San Jorge
Villanueva de Gállego, Zaragoza, Spain
Changes in spatio temporal parameters of gait
Changes in spatio temporal parameters of gait over a treadmill will be measurement using an optical measurement system consisting of a transmitting and receiving bar (OptoGait System).
Time frame: Baseline, 48 hours, 96 hours, 1 week
Changes in Pressure Pain Thresholds
Changes in pressure pain thresholds (PPT) will be determined with pressure algometry bilaterally over the leg and shoulder. PPT is defined as the exact time point where the pressure is first being perceived at painful.
Time frame: Baseline, 48 hours, 96 hours, 1 week
Changes in active knee extension test
Changes in range of motion (°; degrees) will be assessed in both sides using the active knee extension (AKE) test. AKE test: subject is lying prone with hip and knee flexed at 90°. Then, maximal knee extension is performed.
Time frame: Baseline, 48 hours, 96 hours, 1 week
Changes in knee-flexors maximal isometric muscle strength
Changes in knee-flexors maximal isometric strength (Newton) will be assessed by using a hand-held dynamometer.
Time frame: Baseline, 48 hours, 96 hours, 1 week
Electromyography (EMG) measurement during the tests
Electromyography values will be taken from hamstrings during the performance of gait analysis and dynamometry
Time frame: Baseline, 48 hours, 96 hours, 1 week
Changes in thermography on hamstrings areas
A thermography image will be taken every day of assessment. Changes in colour pixels will be analysed to determine temperature changes.
Time frame: Baseline, 48 hours, 96 hours, 1 week
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Changes in static and dynamic plantar pressure measurement
Changes in static and dynamic plantar pressure measurement will be performed in every session by using a pressure platform.
Time frame: Baseline, 48 hours, 96 hours, 1 week
Changes in subjective perception of pain and impairment: Two questionnaire (Modified 7-item Likert Scales)
Two questionnaires (Modified 7-item Likert Scales) are filled up by the subject to show subjective perception of pain related to movement along the recovery period. Scale of pain intensity, from 0 (no pain) to 6 (higher pain intensity). Scale of functional impairment, from 0 (no impairment) to 6 (higher impairment).
Time frame: 48 hours, 96 hours, 1 week