Paraspinal and hamstring muscle shear-wave modulus relationship
Description
Shear wave elastography obtained from 14 individuals at three different angles (knee flexion 0, 45 and 90 degrees) and active contractions of the knee flexors at 70% of the maximum voluntary contraction. FILE 1: SWE MODULUS DATA The data are organized from left to right as follows: PARTICIPANT Nr PARTICIPANT CHARACTERISTICS RAW FORCE VALUES MOMENT ARM VALUES TORQUE VALUES ES0, MF0, SM0, ST0 SWE MODULUS VALUES AT REST, 0 DEGREE KNEE FLEXION ANGLE ES0, MF0, SM0, ST0 CONTRACTION SWE MODULUS VALUES AT 70% MVC, 0 DEGREE KNEE FLEXION ANGLE ES0, MF0, SM0, ST0 SWE MODULUS VALUES AT REST, 45 DEGREE KNEE FLEXION ANGLE ES0, MF0, SM0, ST0 CONTRACTION SWE MODULUS VALUES AT 70% MVC, 45 DEGREE KNEE FLEXION ANGLE ES0, MF0, SM0, ST0 SWE MODULUS VALUES AT REST, 90 DEGREE KNEE FLEXION ANGLE ES0, MF0, SM0, ST0 CONTRACTION SWE MODULUS VALUES AT 70% MVC, 90 DEGREE KNEE FLEXION ANGLE RELATIVE CHANGE IN SWE MODULUS FROM O TO 70% MVC ESOREL, MF0REL, STOREL, SM0REL (0 DEGREES) ES45REL, MF45REL, ST45REL, SM45REL (45 DEGREES) ES990REL, MF90REL, ST90REL, SM90REL (0 DEGREES) FILE 2: EMG RAW AND NORMALIZED TO MAXIMUM VOLUNTARY CONTRACTION (MVC) DATA FROM LEFT TO RIGHT RAW EMG VALUES OF SM/ST, MF, ES DURING PASSIVE AND ACTIVE (70% OF MVC) CONDITIONS
Files
Steps to reproduce
Participants performed passive and active (submaximal) knee flexion efforts from 0°, 45° and 90° angle of knee flexion from the prone position. Using shear-wave elastography (SWE) and surface elec-tromyography, we measured the elastic modulus and root mean square (RMS) signal of the erector spinae (ES), multifidus (MF) semitendinosus (ST) and semimembranosus (SM) during different knee flexion angles. Changes on SWE modulus from 0 to 70% MVC were calculated. EMG was normalized to MVC value.