Kazuyuki Shibata

ORCID: 0000-0002-4808-0906
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About
Contact & Profiles
Research Areas
  • Lower Extremity Biomechanics and Pathologies
  • Osteoarthritis Treatment and Mechanisms
  • Shoulder Injury and Treatment
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Elbow and Forearm Trauma Treatment
  • Knee injuries and reconstruction techniques
  • Orthopedic Surgery and Rehabilitation
  • Total Knee Arthroplasty Outcomes
  • Balance, Gait, and Falls Prevention
  • Respiratory Support and Mechanisms
  • Sports injuries and prevention
  • Advanced Wireless Communication Techniques
  • Tendon Structure and Treatment
  • Scoliosis diagnosis and treatment
  • Musculoskeletal pain and rehabilitation
  • Peripheral Nerve Disorders
  • Wireless Communication Networks Research
  • Human Motion and Animation
  • Peripheral Neuropathies and Disorders
  • Organic Light-Emitting Diodes Research
  • Conducting polymers and applications
  • Luminescence and Fluorescent Materials
  • Muscle activation and electromyography studies
  • Bone and Joint Diseases
  • Neurological Disorders and Treatments

Akita University Hospital
2015-2024

Akita University
2015-2019

Tokyo University of Science
2008

Kitami Institute of Technology
2006-2008

Osaka City University
2000

Tokyo Teishin Hospital
1995

The University of Tokyo
1995

Kyushu University
1984

Little is known regarding the relationship between balance impairments and physical activity in COPD. There has been no study investigating objectively measured activity. Here we investigated association by an monitor elderly COPD patients.Twenty-two outpatients with (mean age, 72±7 years; forced expiratory volume 1 second, 53%±21% predicted) 13 age-matched healthy control subjects 72±6 years) participated study. We assessed all 35 subjects' (one-leg standing test [OLST] times, Short...

10.2147/copd.s107936 article EN cc-by-nc International Journal of COPD 2016-07-01

Abstract Background Ultrasound imaging has been widely used for of the diaphragm thickness (Tdi) and thickening. Few studies assessed Tdi using ultrasonography in patients with chronic obstructive pulmonary disease (COPD). We measured thickening COPD compared healthy younger older adults to reveal influence ageing and/or COPD. Methods Thirty‐eight male (age 72 ± 8 years), 15 22 1 years) 5 volunteers were recruited. at total lung capacity (Tdi TLC ), functional residual FRC ) volume RV B‐mode...

10.1111/crj.13161 article EN The Clinical Respiratory Journal 2020-02-11

In extended new general relativity, which is formulated as a reduction of Poincaré gauge theory gravity whose group the covering group, we study problem whether total energy-momentum, angular momentum and charge are equal to corresponding quantities gravitational source.We examine this for charged axi-symmetric solutions field equations.Our main concern restriction on asymptotic form variables imposed by requirement that physical system equivalent rotating source body.This can be regarded an...

10.1143/ptp.104.505 article EN Progress of Theoretical Physics 2000-09-01

Background: Young baseball players with medial elbow injuries are known to have high forearm flexor-pronator muscle elasticity; however, the causal relationship between elasticity and occurrence of remains unclear. Purpose/Hypothesis: The purpose this study was determine whether is a risk factor for injury in young players. It hypothesized that flexor carpi ulnaris (FCU) would be injuries. Study Design: Cohort study; Level evidence, 2. Methods: (aged 9-12 years) no history underwent...

10.1177/03635465231202028 article EN The American Journal of Sports Medicine 2023-10-10

To clarify the changes in echo intensity (EI) prefemoral fat pad (PFP) and identify relationship between PFP clinical features of knee osteoarthritis (OA).Twenty-six women with OA (mean age: 76 years) 17 healthy 73 were enrolled. The Kellgren Lawrence grading scale was used for radiographic evaluation OA. EI measured as grayscale values. change ratio anteroposterior length during quadriceps contraction measured. Knee range motion pain (100-mm visual analog scale) evaluated.The significantly...

10.4103/jmu.jmu_85_20 article EN cc-by-nc-sa Journal of Medical Ultrasound 2021-01-22

Abstract The aim of this study was to clarify the morphologic characteristics central aponeurosis (CA) rectus femoris (RF) muscle in individuals with medial knee osteoarthritis (OA). Forty legs 26 OA (OA group), 41 21 elderly (elderly and 40 20 young (young group) were investigated. We measured following 4 parameters: (1) ratio CA length, expressed as percentage RF length; (2) type (curved, straight, S-shaped, or irregular); (3) direction, defined direction line from anterior posterior ends...

10.1097/ruq.0000000000000227 article EN Ultrasound Quarterly 2016-06-23

Background: In normal knees, quadriceps contraction changes the shape of prefemoral fat pad (PFP). However, in persons with knee osteoarthritis (OA), functional or morphological PFP are unclear. This study aimed to clarify individuals OA through ultrasonography. Materials and Methods: Participants were divided into (36 knees; mean age, 74 years), elderly (31 70 young (26 21 years) groups. The anteroposterior (AP) length before during isometric at 0°, 30°, 60°, 90° flexion was measured...

10.4103/jmu.jmu_15_17 article EN cc-by-nc-sa Journal of Medical Ultrasound 2018-01-01

The purpose of the present study was to measure elasticities forearm flexor-pronator muscles in youth baseball players and examine their relationships with medial elbow injuries.We examined strain ratios (SR) flexor digitorum superficialis (FDS), carpi ulnaris (FCU), pronator teres (PT) 89 epicondylar fragmentation (injury group) 142 healthy (control group). An index muscle elasticity determined using ultrasound elastography. SR each compared between injury control groups, both side arms...

10.1080/00913847.2021.1954861 article EN The Physician and Sportsmedicine 2021-07-14

The forearm flexor-pronator muscles act as a dynamic elbow stabilizer against valgus load during baseball pitching. elasticity of these increases with However, it is unclear whether increased muscle associated greater torque This study aimed to determine the relationship between and pitching in young pitchers.

10.1016/j.jse.2024.05.027 article EN cc-by Journal of Shoulder and Elbow Surgery 2024-07-14

Abstract We aimed to elucidate the relationship between active force production and curvature of central aponeurosis (CA) rectus femoris in young healthy participants as fundamental data compare muscle CA before after straight leg raising (SLR) training with knee osteoarthritis (OA). Central was determined during submaximal maximal voluntary contractions (MVCs) using ultrasonography. Twenty-five female volunteers underwent ultrasonographic measurements under conditions isometric MVC. They...

10.1097/ruq.0000000000000443 article EN Ultrasound Quarterly 2019-04-06

Restoration of motor function in the hand is difficult brachial plexus injuries which C5, 6, 7 and 8 roots are involved, because there insufficient motors available for transfer to restore extensors fingers wrist. We have used extensor digitorum tenodesis 11 cases found it effective simple.

10.1016/s0266-7681(05)80132-9 article EN Journal of Hand Surgery (European Volume) 1995-10-01

<b>Background:</b> Slow gait speed (GS) is well recognized in elderly COPD. However which parameter of contributes to GS has been uncertain. We aimed investigate the determinants among parameters, and relationships between parameters clinical characteristics <b>Methods:</b> Twenty-three outpatients with COPD (age, 71±7years, FEV<sub>1</sub>, 53±23%pred) 13 healthy controls 72±6 years) performed 10-m test at their usual pace wearing a tri-axial accelerometer on low back. Step time (Step-T),...

10.1183/13993003.congress-2016.pa1565 article EN 01.02 - Rehabilitation and chronic care 2016-09-01

<b>Aim:</b> The standard inspiratory muscle training (IMT) for COPD patients was low-intensity (30% maximal mouth pressure: PImax) 30 minutes until Langer (2015) showed that high-intensity (&gt;50% of breaths (3-5 minutes) effective. We investigated the efficacy moderate-intensity (40% and short-duration (30 breaths) IMT in elderly with COPD. <b>Methods:</b> Sixteen outpatients stable (Age: 72 ± 7years, FEV<sub>1</sub>: 53.4 19.9% predicted) were followed three months a combined protocol...

10.1183/13993003.congress-2016.pa703 article EN 01.02 - Rehabilitation and chronic care 2016-09-01

We study the performances of a synchronous chip-interleaved, block spread (CIBS) code division multiple access (CDMA) with space-time block-coding (STBC) in presence frequency-selective fading. For providing space diversity gain due to STBC, we introduce optimum precoding for STBC. Zero-forcing and minimum mean square error equalizers CIBS-CDMA are derived. Simulation results confirm that proposed precoder is valid under frequency selective

10.1093/ietfec/e91-a.10.2885 article EN IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences 2008-10-01

Abstract— The temperature‐dependent photoluminescence features of polycarbonate thin films doped with blue‐phosphorescent molecules, either bis[(4,6‐difluorophenyl)‐pyridinato‐N,C 2′ ] (picolinate) iridium (Flrpic) or bis(2‐phenylpyridinato‐N,C ) (acetylacetonate) rhodium [(ppy) 2 Rh(acac)], which have an equivalent triplet energy 2.64 eV, been studied. intensity the Flrpic‐doped film did not show any dependence on temperature. On other hand, as for (ppy) Rh(acac)‐doped film, decreasing...

10.1889/1.2938872 article EN Journal of the Society for Information Display 2008-05-28

The decorrelating detector is one of the detecting methods in a direct sequence code division multiple access systems. We investigate blind adaptive (BADD) using only signature desired user (DU) according to assumption that algorithm used downlink. When BADD constructed with an antenna array, both spatial and temporal must be taken into consideration for signal detection. propose incorporated estimation (SS) DU from received signals. As procedure SS, orthogonal projection approximation...

10.1093/ietfec/e89-a.10.2686 article EN IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences 2006-10-01

Context : Baseball pitching is a coordinated movement involving the spine. A previous study indicated that increased thoracic kyphosis angle in standing position was risk factor for medial elbow injuries youth baseball players. However, spinal alignments single-leg and their relationships with injuries, scapular alignment, or hip joint range of motion are unclear. Objective To examine difference alignment between positions players analyze relationship motion. Design Cross-sectional study....

10.1123/jsr.2020-0155 article EN Journal of Sport Rehabilitation 2021-01-19

To investigate the differences in self-efficacy (SE) for walking tasks between older patients with knee osteoarthritis (OA) and adults without OA.A cross-sectional design was employed. Older radiographic OA community-dwelling as controls were enrolled study. SE task assessed using modified gait efficacy scale (mGES). A Wilcoxon rank-sum test used to compare mGES groups of participants. Tobit regression model estimate difference mGES. The presence an independent variable. Sex (women), age,...

10.1298/ptr.e10128 article EN Physical Therapy Research 2021-12-05
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