Assessing Function and Endurance in Adults with Spinal and Bulbar Muscular Atrophy: Validity of the Adult Myopathy Assessment Tool

Table 7

Quantitative assessment of peak muscle force. The tested muscle groups, subject testing position, and orientation of the dynamometer strap are listed for the quantitative assessment of maximum isometric force^€ using a fixed dynamometry load cell^£.

Muscle group	Patient position	Strap position
Upper extremity
Lateral pinch	Seated; elbow at 90°; midrange supination/pronation	None; pinch dynamometer
Hand grip	Seated; elbow at 90°; midrange supination/pronation	None; hand grip dynamometer
Wrist flexors	Seated; elbow at 90°; midrange supination/pronation	Ventral metacarpals with second stabilizing strap at dorsal proximal wrist
Elbow flexors	Supine; elbow at 90°; midrange supination/pronation	Radial distal forearm proximal to wrist
Elbow extensors	Supine; elbow at 90°; midrange supination/pronation	Ulnar distal forearm proximal to wrist
Shoulder abductors	Supine; shoulder and elbow at 90°	Lateral distal arm proximal to elbow
Lower extremity
Ankle dorsiflexors	Supine; ankle at 90°	Around dorsal metatarsals
Knee extensors	Seated; hip and knee at 90°	Around ankle and proximal to malleolus
Hip flexors	Supine; hip and knee at 90°	Anterior distal femur and proximal to patella
Hip extensors	Supine; hip and knee at 90°	Posterior distal femur
Hip abductors	Seated; hip and knee at 90°	Lateral distal femur

€AEVERL Medical, LLC P.O. Box  170 Gainesville, GA 30503.
^£Interface, 7401 East Butherus Drive, Scottsdale, AZ 85260.