title: Wrist extension strength required for power grip: a study using a radial nerve block model.
abstract: The aim of this study was to investigate the correlation of wrist extension strength (WES) and grip strength (GS) using a radial nerve block, and to determine the WES required to prevent the "wrist flexion phenomenon" (antagonistic WES) when making a fist. We tested 14 arms in seven healthy males. WES and GS were measured before blocking as standard WES and standard GS. All participants then had radial nerve blocks with mepivacaine hydrochloride. During the recovery process from radial nerve blockade, WES and GS were recorded every 5 minutes. There was a very strong correlation between WES and GS (p < 0.0001). The mean antagonistic WES was 51% of standard WES, and the mean GS, recorded at the same time, was 66% of standard GS.
authors.affiliation: Departments of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan. takane.suzuki@faculty.chiba-u.jp
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Kunishi
authors.forename: J
authors.initials: J
authors.lastname: Kakizaki
authors.forename: N
authors.initials: N
authors.lastname: Iwakura
authors.forename: J
authors.initials: J
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Kuniyoshi
mesh_terms: D000328:Adult; D004576:Electromyography; D005260:Female; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008297:Male; D053581:Muscle Strength Dynamometer; D009407:Nerve Block; D011826:Radial Nerve; D014955:Wrist Joint / Q000502:physiology*