# Reliability of a New Portable Dynamometer for Assessing Hip and Lower Limb Strength
## 2 Materials and Methods
### Study Protocol
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Task** & **Body Position** & **Sensor \& Lower Leg Contact** \\ \hline HIP FLX & seated position; hip in \(\sim\)45\({}^{\circ}\) flexion and neutral in other & anterior (for FLX), medial (for ADD), or lateral (for ABD) side of the lower leg in \\ HIP ADD & planes (0\({}^{\circ}\) abduction/adduction; 0\({}^{\circ}\) external/internal & lateral (for ABD) side of the lower leg in \\ HIP ADD & rotation); knee locked in full extension; ankle in slight & contact with superior (for FLX), medial (for ADD), or lateral (for ABD) part of \\ HIP ABD & dorsiflexion and neutral in other planes; hands placed on the floor behind the device for support; non-elastic strap & sensor brace; 5 cm proximal to the medial \\  & placed across the pelvis on the anterior side for stabilization & malleoli \\ \hline HIP EXT & prone position; hip in neutral position in all planes (0\({}^{\circ}\) flexion/extension; 0\({}^{\circ}\) abduction/adduction; 0\({}^{\circ}\) external/internal rotation); knee locked in full extension and placed slightly above the surface (to further emphasize & posterior side of the lower leg in contact with superior part of sensor brace; 5 cm proximal to the medial malleoli \\ HIP EXT & hip extension movement and to avoid any knee flexion & with superior part of sensor brace; 5 cm proximal to the medial malleoli \\  & during contraction); ankle in slight dorsiflexion and neutral & proximal to the medial malleoli \\  & in other planes; elbows placed on the padded mat on the floor behind the device for support; non-elastic strap placed & lateral (for IR) or medial (for ER) side of \\  & across the pelvis on the posterior side for stabilization & lateral (for IR) or medial (for ER) side of \\ \hline HIP IR & abduction/adduction; 0\({}^{\circ}\) external/internal & the lower leg in contact with lateral (for IR) or medial (for ER) side of \\ HIP ER & in 90\({}^{\circ}\) flexion and neutral in transversal plane (0\({}^{\circ}\) internal/external rotation); ankle in slight dorsiflexion & the lower leg in contact with lateral (for IR) or medial (for ER) part of sensor brace; \\  & internal/external rotation); ankle in slight dorsiflexion and neutral in other planes, no stabilization strap was used & 5 cm proximal to the medial malleoli \\ \hline KNEE EXT & supine position, hip in 90\({}^{\circ}\) flexion and neutral in other & \\  & planes (0\({}^{\circ}\) abduction/adduction; 0\({}^{\circ}\) external/internal & lateral (for IR) or medial (for ER) side of \\ HIP ER & abduction/adduction; 0\({}^{\circ}\) external/internal & the lower leg in contact with lateral (for IR) or medial (for ER) side of \\ HIP ER & abduction/adduction; 0\({}^{\circ}\) external/internal & the lower leg in contact with lateral (for IR) or medial (for ER) side of \\ HIP ER ER & abduction/adduction; 0\({}^{\circ}\) external/internal & the measurement was performed using non-elastic strap that connected \\  & and neutral in other planes; posterior side of lower leg was & participant’s lower leg on the anterior \\  & placed on the box, which was fixated on the dynamometer & side (5 cm proximal to medial malleoli) \\  & with non-elastic strap (yellow strap, shown in Figure 2D) & with a rigid rod mounted on both sensor \\  & posterior side of thigh in contact with the box; for & breaces on the superior part (shown in Figure 3A) \\  & stabilization, participant held the straps attached to the box & Figure 3A) \\ \hline ANKLE PFLX & seated position, hip in 90\({}^{\circ}\) flexion and neutral in other & \\  & planes (0\({}^{\circ}\) abduction/adduction; 0\({}^{\circ}\) external/internal & \\  & rotation); knee in 90\({}^{\circ}\) flexion and neutral in transverse plane & the measurement was performed using a rigid rod that was mounted on both \\  & (0\({}^{\circ}\) internal/external rotation); ankle in neutral position in & sensor braces on the inferior part; \\  & all planes (0\({}^{\circ}\) plantar/dorsal flexion, 0\({}^{\circ}\) inversion/eversion); & metatxso-phalangel joints were placed \\  & non-elastic strap that enabled isometric plantar flexion was & on the middle of the rigid rod (shown in Figure 3B) \\  & placed across the thigh proximal to the knee; for & \\  & stabilization, the participant held the straps attached to the box (black strap, shown in Figure 2E) & \\ \hline NHE & kneeling position; lower leg placed on the padded mat & posterior side of the lower leg in contact \\  & distally to the pattella (to allow free movement of the pattella & with superior part of sensor brace; 5 cm proximal to the medial malleoli \\ NHE & during the descend); participant slowly descended in 3–5 s & \\  & (eccentric contraction of knee flexors) while maintaining & posterior side of the lower leg in contact \\  & straight knee-hip-shoulder line & with superior part of sensor brace; 5 cm proximal to the medial \\ \hline ADD = adduction, ABD = abduction, FLX = flexion, EXT = extension, IR = internal rotation, ER = external rotation, PFLX = plantar flexion, & \\  &