Fig 1.
Testing positions for strength and power assessment.
Note: Same positions were used on the fixed dynamometer. (A) Hip flexors with the participant seated and hips and knees flexed at 90°. Dynamometer placed on the anterior aspect of the thigh, proximal to the knee joint. (B) Knee extensors with the participant seated and hip and knees flexed at 90°. Dynamometer placed on the anterior aspect of the shank, proximal to the ankle joint. (C) Knee flexors with the participant seated and hips and knees flexed at 90°. Dynamometer placed on the posterior aspect of the shank, proximal to the ankle joint. (D) Ankle plantarflexors with the participant lying supine with the ankle in plantargrade and hips and knees extended. Dynamometer placed over the metatarsal heads on the sole of the foot. (E) Ankle dorsiflexors with the participant lying supine with the ankle relaxed and hips and knees extended. Dynamometer placed over the metatarsal heads on the dorsum of the foot. (F) Hip abductors with the participant lying supine and hips and knees extended. Dynamometer placed on the lateral aspect of the shank, proximal to the ankle joint. (G) Hip adductors with the participant lying supine and hips and knees extended. Dynamometer placed on the medial aspect of the shank, proximal to the ankle joint. (H) Hip extensors with the participant lying prone and hips and knees extended. Dynamometer placed on the posterior aspect of the shank, proximal to the ankle joint.
Table 1.
Test-retest reliability (ICCs) of different rate of force development measures on the fixed KinCom dynamometer.
Table 2.
Mean (SD) values and intra-rater reliability for each assessor on each device plus the KinCom for peak force (kg).
Table 3.
Mean (SD) values and intra-rater reliability for each assessor on each device plus the KinCom for rate of force development (kg/s).
Table 4.
Inter-rater and inter-device reliability for the HHDs.
Table 5.
Concurrent validity analysis of the HHDs for assessment of peak force and RFD measures compared to the KinCom.