Hiroshi Takasaki

Learn More
The Flexion-Rotation Test (FRT) is proposed to assess mobility primarily at C1-C2. However, there is no in vivo measurement investigating the validity of the FRT. The purpose of this study was 1) to examine measurement reliability of segmental upper cervical movements using magnetic resonance imaging and 2) to investigate the content validity of the FRT.(More)
The prone hip extension (PHE) test is commonly used in the evaluation of lumbo-pelvic dysfunction. It has been suggested that altered motor control identified by the PHE test can be improved with the application of compression force across the pelvis, to increase force closure on the sacroiliac joint (SIJ). This repeated measure study design investigated(More)
Visual symptoms are often reported by patients with neck pain. The aim of the study was to report on the prevalence and most troublesome visual disturbances in subjects with neck pain. Seventy subjects with neck pain and seventy healthy control subjects answered questions about the presence and magnitude (/12) - product of frequency (0-4) and intensity(More)
OBJECTIVES To measure the strain on 3 fiber groups of the subscapularis muscle at various glenohumeral joint positions and to determine the appropriate shoulder position for subscapularis muscle stretching. DESIGN Repeated-measures design. SETTING Biomechanics laboratory. SPECIMENS Nine frozen-thawed glenohumeral joints obtained from 9 fresh cadavers.(More)
STUDY DESIGN A comparative measurement design investigating the C4-Th1 intervertebral foramen under simulated clinical tests for cervical radiculopathy using magnetic resonance imaging. OBJECTIVE The purpose of this study was to evaluate functional changes in the cervical intervertebral foramen during the axial compression test (ACT), axial distraction(More)
BACKGROUND It is well known that cubital tunnel syndrome frequently occurs in throwing athletes. The cause of cubital tunnel syndrome is considered to be mechanical stimuli on the ulnar nerve in the cubital tunnel. The hypothesis of the present cadaveric study was that the ulnar nerve is subjected to longitudinal strain in the cubital tunnel during the(More)
Clinically, taping is believed to alter muscle activity. The purpose of this study was to investigate: (1) whether taping across the upper trapezius (UT) muscle influenced the level of UT and lower trapezius (LT) muscle activity and the ratio of these activities (UT/LT ratio) during a static typing task; and (2) if the activity of these muscles varied with(More)
STUDY DESIGN A comparative measurement study of in vivo cervical rotation, induced by shoulder abduction, measured using magnetic resonance imaging. OBJECTIVE The purpose of this study was to clarify the kinematics between cervical rotation and shoulder abduction. SUMMARY OF BACKGROUND DATA Although it is believed that abduction of the shoulder induces(More)
BACKGROUND Subjective visual vertical (SVV) assesses visual dependence for spacial orientation, via vertical perception testing. Using the computerized rod-and-frame test (CRFT), SVV is thought to be an important measure of cervical proprioception and might be greater in those with whiplash associated disorder (WAD), but to date research findings are(More)
STUDY DESIGN Case series. BACKGROUND Intersection syndrome is an overuse injury of the forearm. Taping has been described for the management of soft tissue injuries, yet there has been no report for the management of intersection syndrome using this method. The purpose of this case series was, therefore, to describe the efficacy of taping for the(More)