Age-related degradations of muscular properties such as a decline in maximal isometric ankle torque can impact these activities [1].
Within each block, two maximal voluntary contractions (MVCs) were performed to establish maximal isometric ankle torque, followed by five trials with torque and ultrasound measurements.
Following maximal isometric ankle dorsiflexion, BOLD response was measured in the dorsiflexors.
This study has allowed us to characterize the maximal isometric strength of ankle evertors and dorsiflexors with quantitative muscle testing between three levels of severity of DM1 (mild, moderate and severe) and control subjects in a multicenter study setup.
16 Muscle strength was determined by the same experienced technician through measurement of the maximal isometric strength of ankle dorsiflexors, knee extensors, and hip abductors in both legs using a hand-held dynamometer, ie, the Nicholas manual muscle tester (Lafayette Instruments, Lafayette, IN), as described previously.
The objectives of this study were to characterize the maximal isometric strength of ankle evertors and dorsiflexors with HHD quantitative muscle testing in DM1 patients to establish the intra- and inter reliability, which is of major importance for future multicentric therapeutic trials.
Maximal isometric muscle strength for ankle dorsiflexion will also be measured as the maximum of three trials with the participant sitting in a high chair with their foot secured to a footplate attached to a spring gauge.
Muscle strength was assessed by an objective method: determination of the maximal isometric strength of the ankle dorsiflexers, knee extensors, and hip abductors on both legs using a hand held dynamometer – the Nicholas Manual Muscle Tester (NMMT; Lafayette Instruments, Lafayette, IN). 26 One experienced technician (BK) performed all strength assessments on 53 elderly women.
For each subject, the larger of the two maximal isometric joint torque measurements at each ankle angle (TIM) was used to construct a Tθ relationship.
The maximal isometric leg-extensor strength at the knee ankle 110° will be measured by a strain gauge dynamometer (Tamtron, Tampere, Finland) and the grip strength of both forearms with a standard hand dynamometer (Lafaytte, Loughborough, UK).
Mathieu et al. (2003) used a Nicholas push HHD to measure the maximal isometric force of elbow extension, hip flexion, and ankle dorsiflexion [ 2].
