Issei Ogasawara

ORCID: 0000-0003-4176-689X
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About
Contact & Profiles
Research Areas
  • Knee injuries and reconstruction techniques
  • Sports injuries and prevention
  • Lower Extremity Biomechanics and Pathologies
  • Muscle activation and electromyography studies
  • Sports Performance and Training
  • Total Knee Arthroplasty Outcomes
  • Shoulder Injury and Treatment
  • Physical Activity and Health
  • Sport Psychology and Performance
  • Motivation and Self-Concept in Sports
  • Obesity, Physical Activity, Diet
  • Behavioral Health and Interventions
  • Cardiovascular and exercise physiology
  • Orthopedic Surgery and Rehabilitation
  • Sports Dynamics and Biomechanics
  • Cardiovascular Effects of Exercise
  • Motor Control and Adaptation
  • Botulinum Toxin and Related Neurological Disorders
  • Foot and Ankle Surgery
  • Balance, Gait, and Falls Prevention
  • Visual perception and processing mechanisms
  • Non-Invasive Vital Sign Monitoring
  • Cerebral Palsy and Movement Disorders
  • Mental Health Research Topics
  • Health and Lifestyle Studies

Osaka University of Health and Sport Sciences
2016-2024

Osaka University
2017-2024

Meiji University
2017

Japan Research Institute
2017

Biomed Research Institute
2017

Mukogawa Women's University
2011-2015

Japan Sport Council
2009-2011

Waseda University
2009

The University of Tokyo
2009

University of Tsukuba
2009

Background and Objective: Dementia with Lewy bodies (DLB) is frequently misdiagnosed as Alzheimer's disease (AD) due to overlapping clinical presentations. In this study, we evaluated a smartphone-based digital platform that leverages behavioral markers accurately differentiate between DLB AD. Methods: We conducted cross-sectional study on 81 participants (Healthy controls = 40, AD 21, 20), administering MMSE, noise pareidolia test (NPT) integrated eye-tracking speech inputs. Ground truth...

10.1101/2025.03.31.25324871 preprint EN cc-by-nc-nd 2025-04-01

BACKGROUND AND OBJECTIVE: Dementia with Lewy bodies (DLB) is frequently misdiagnosed as Alzheimer’s disease (AD) due to overlapping clinical presentations. In this study, we evaluated a smartphone-based digital platform that leverages behavioral markers accurately differentiate between DLB and AD. METHODS: We conducted cross-sectional study on 81 participants (Healthy controls = 40, AD 21, 20), administering the MMSE noise pareidolia test (NPT) integrated eye-tracking speech inputs. Ground...

10.32388/umu6ss preprint EN 2025-04-07

Abstract Pareidolias refer to visual perceptual deficits where ambiguous shapes take on meaningful appearances. In neurodegenerative diseases, pareidolias are examined via a paper-based neuropsychological tool called the noise pareidolia test. this study, we present initial findings regarding utilization of test digital format analyze variations between and testing approaches. We performed our experiments healthy controls, patients diagnosed with Alzheimer’s disease (AD), Dementia Lewy body...

10.1101/2024.02.08.24302504 preprint EN cc-by medRxiv (Cold Spring Harbor Laboratory) 2024-02-09

Background: Meniscal extrusion/translation has been used as an index for meniscal treatment. However, the relationship between displacement and degree of tear or load–transmission function lateral meniscus (LM) remains unclear. Purpose: To clarify width radial LM (1) (2) resultant force through under axial compressive load in porcine model. Study Design: Controlled laboratory study. Methods: Eight intact knees with without a partial at midbody (involving 30%, 60%, 90% its width) were...

10.1177/03635465221090543 article EN The American Journal of Sports Medicine 2022-04-13

Abstract ‘Yips’ in golf is a complex spectrum of anxiety and movement-disorder that affects competitive sporting performance. With unclear etiology high prevalence documented western literature, the perception management this psycho-neuromuscular problem among Japanese elite golfers unknown. The objective study was to explore factors associated with yips, investigate performance deficits strategies implemented prevent yips. We surveyed approx. 1300 professional on their golfing habits,...

10.1038/s41598-021-99128-9 article EN cc-by Scientific Reports 2021-10-11

All living tissues and cells on Earth are subject to gravitational acceleration, but no reports have verified whether acceleration mode influences bone formation healing. Therefore, this study was compare the effects of two modes, vibration constant (centrifugal) accelerations, healing in trunk using BMP 2-induced ectopic (EBF) mouse model a rib fracture (RFH) rat model. Additionally, we tried verify difference mechanism effect by accelerations between these models. Three groups (low-...

10.1371/journal.pone.0172614 article EN cc-by PLoS ONE 2017-03-06

Combined knee valgus and tibial internal rotation (VL + IR) moments have been shown to stress the anterior cruciate ligament (ACL) in several vitro cadaveric studies. To utilize this knowledge for non-contact ACL injury prevention sports, it is necessary elucidate how ground reaction force (GRF) acting point (center of pressure, CoP) stance foot produces combined VL IR risky maneuvers, such as cuttings. However, effects GRF on development moment cutting are still unknown. We first...

10.1016/j.jshs.2023.11.005 article EN cc-by-nc-nd Journal of sport and health science/Journal of Sport and Health Science 2023-11-27

Sportswear-type wearables with integrated inertial sensors and electrocardiogram (ECG) electrodes have been commercially developed. We evaluated the feasibility of using a sportswear-type wearable for evaluating exercise intensity within controlled laboratory setting. Six male college athletes were asked to wear while performing treadmill test that reached up 20 km/h. The magnitude filtered tri-axial acceleration signal, recorded by sensor, was used calculate index. R-R intervals ECG...

10.3390/s22072577 article EN cc-by Sensors 2022-03-28

Motion sensors are widely used for gait analysis. The validity of commercial analysis systems is great interest because calculating position/angle-level parameters potentially produces an error in the integration process motion sensor data; moreover, ORPHE ANALYTICS, a motion-sensor-based system, has not yet been examined. We examined calculated using ANALYTICS relative to those conventional optical capture. Nine young adults performed tasks on treadmill at speeds 2−12 km/h....

10.3390/s23010331 article EN cc-by Sensors 2022-12-28

Abstract Background Biomechanical factors affecting horizontal-plane hip and knee kinetic chain anterior cruciate ligament (ACL) injury risk during cutting maneuvers remain unclear. This study aimed to examine whether different foot strike patterns alter kinetics kinematics a maneuver in female athletes clarify the individual force contribution for producing high-risk loadings. Twenty-five healthy performed 60° task with forefoot rearfoot first conditions. Horizontal-plane moment components,...

10.1186/s40798-021-00368-w article EN cc-by Sports Medicine - Open 2021-10-21

Dynamic balance was evaluated using the trajectory length of center foot pressure (COP) in early phase from immediately after landing to time pastoral maintenance. Ten young volunteers with an average age 23.8 years were asked stand on one a horizontal floor, hop forward half step and land 10 times each 3 non-consecutive days. The peak vertical component floor reaction force (Fz), initiation maximum value (tz) COP measured by plate (AMTI, Ltd.). None subjects complained any feeling fear or...

10.2739/kurumemedj.ms65012 article EN The Kurume Medical Journal 2016-01-01

Introduction: With the widespread use of wearable sensors, various methods to evaluate external physical loads using acceleration signals measured by inertial sensors in sporting activities have been proposed. Acceleration-derived evaluated as a simple indicator, such mean or cumulative values target interval. However, conventional simplified indicator may not adequately represent features load involving movement intensities. Therefore, we propose method tennis player based on histogram...

10.3389/fphys.2023.1161182 article EN cc-by Frontiers in Physiology 2023-03-24

Precise postural control helps prevent anterior cruciate ligament injury. However, it is unknown whether the anticipated stability can be improved during a physically uncertain and cognitively demanding task.Anticipated will improve through unanticipated single-leg landing with rapid foot placement target tracking.Controlled laboratory study.A total of 22 healthy female university-level athletes performed novel dual-task paradigm: an tracking. In normal condition (60 trials), participants...

10.1177/23259671231177312 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2023-07-01

The inside-out meniscal repair is widely performed to preserve the function of meniscus. In this technique, outer suture passed through capsule as well meniscus, while inner inserted into aim study was biomechanically compare stability between meniscus-meniscus and meniscus-capsule methods for longitudinal tear with technique.Twenty-seven porcine knees were dissected maintain femur-medial capsule/meniscus-tibia complex, meniscus cut off along circumferential fiber 3 mm width peripheral...

10.1186/s40634-021-00417-z article EN cc-by Journal of Experimental Orthopaedics 2021-10-21

The objective of this study was to design an orthosis during the exercise walking in water for rehabilitation ACL injury. In injury, it is necessary train muscles around knee joint. particular, compared flexors, extensors are less exerted normal form while water. Therefore, orthosis, by which can be trained, optimally designed simulator compute body load considering fluid force and acting on ACL. characteristics obtained simulation large width thigh foot parts small density shank parts....

10.1299/jbse.6.222 article EN Journal of Biomechanical Science and Engineering 2011-01-01

The objective of this study was to propose the walking in water for ACL injury rehabilitation program by simulation. For objective, simulator which can compute body load considering fluid force and acting on utilized. optimal forms three phases were then computed From simulation analysis, form first phase obtained as "bend knee all through swing phase". This prevent from loading force. second greatly stretch ankle first, bend hip keeping bent foot stretched By form, muscles around joint be...

10.1299/jbse.5.461 article EN Journal of Biomechanical Science and Engineering 2010-01-01

This study investigated the changes in physical inactivity of university students during COVID-19 pandemic, with reference to their academic calendar. We used daily step counts recorded by a smartphone application (iPhone Health App) from April 2020 January 2021 (287 days) for 603 participants. The data 287 days were divided into five periods based on median value across each period was calculated. A k-means clustering analysis performed classify participants subgroups demonstrate...

10.3390/ijerph19041958 article EN International Journal of Environmental Research and Public Health 2022-02-10

Abstract Background Motion sensors are widely used for gait analysis. ORPHE ANALYTICS is a motion-sensor-based analysis system. The validity of commercial systems great interest to clinicians because calculating position/angle-level parameters using motion sensor data potentially produces an error in the integration process; moreover, has not yet been examined. Research question How valid calculated relative those conventional optical capture? Methods Nine young adults performed tasks on...

10.1101/2022.10.17.22281166 preprint EN medRxiv (Cold Spring Harbor Laboratory) 2022-10-17

This short-term survey examined the effect of body part pain on subjective and objective handball performance in Japanese male national athletes. Fourteen athletes participated this study. Assessments 10 parts (concentration satisfaction with movement) were performed using a visual analog scale from 0 to over four consecutive training days. Monitoring heart rate acceleration during was also quantify performance. Path analysis linear mixed modeling employed assess relationship between scores...

10.3390/sports12030065 article EN cc-by Sports 2024-02-21
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