title: Comparison of the effects of remote after-effects of static contractions for different upper-extremity positions and pinch-force strengths in patients with restricted wrist flexion range of motion.
abstract: The objective of the study was to examine the after-effects of static contractions of upper extremity muscles in different shoulder joint positions and at different pinch-force strengths on the maximal active range of motion (MAROM) and wrist agonist/antagonist IEMG activities for patients with restricted wrist flexion range of motion (ROM) due to upper limb pain and dysfunction. The subjects were 10 outpatients (3 males, 7 females) with restricted wrist joints. These subjects performed four static contractions of upper extremity muscles in neutral and diagonal shoulder joint positions and with weak and strong pinch-force strengths in random order. Two-way repeated measures analysis of variance showed that the change in MAROM was significantly larger (P < 0.05) after diagonal-strong static contractions than after neutral-weak static contractions. There were no significant correlations between changes in MAROM and IEMG activities. These results indicate that shoulder joint position and pinch-force strength should be considered for effective induction of remote after-effects of static contractions for increasing MAROM for restricted wrist flexion ROM.
authors.affiliation: Division of Physical Therapy, Tokyo Metropolitan University, Japan. Electronic address: arai-mitsuo@tmu.ac.jp.
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Arai
authors.affiliation: Division of Physical Therapy, Sonoda Hospital, Japan.
authors.forename: Tomoko
authors.initials: T
authors.lastname: Shiratani
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000502:physiology; D026741:Physical Therapy Modalities; D016059:Range of Motion, Articular / Q000502:physiology*; D012785:Shoulder Joint / Q000502:physiology*; D034941:Upper Extremity; D014955:Wrist Joint / Q000502:physiology*
keywords: Active range of motion; Facilitation; PNF aftereffect; Pinch-force; Resistive static contraction