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  • 1
    Online Resource
    Online Resource
    Head Impact in Blind Football During the Tokyo Paralympics : Video-Based Observational Study
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  American Journal of Physical Medicine & Rehabilitation Vol. 102, No. 9 ( 2023-9), p. 836-839
    Details
    In: American Journal of Physical Medicine & Rehabilitation, Ovid Technologies (Wolters Kluwer Health), Vol. 102, No. 9 ( 2023-9), p. 836-839
    Abstract: Head impacts during blind football are common and have high injury rates; however, their characteristics and impact are still underreported. We compared head impact characteristics in blind football players with and without falls on all 18 official blind football match videos from the Tokyo 2020 Paralympic games. The rate of head impacts with falls was significantly higher in the preliminary phase, offense phase, and during dribbling. Significant differences in the region of the head impacted were also observed among the impact subjects/objects. The findings in this study would contribute to the development of injury prevention measures to minimize head injuries from head impact in blind football.
    Type of Medium: Online Resource
    ISSN: 1537-7385 , 0894-9115
    URL: Article
    DOI: 10.1097/PHM.0000000000002187
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 2272463-1
    detail.hit.zdb_id: 2049617-5
    SSG: 31
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  • 2
    Online Resource
    Online Resource
    Characteristics of Wheelchair Basketball Falls During the Tokyo 2020 Paralympics by Sex and Physical Impairment Classification : A Video-Based Observational Study
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  American Journal of Physical Medicine & Rehabilitation Vol. 102, No. 9 ( 2023-9), p. 840-845
    Details
    In: American Journal of Physical Medicine & Rehabilitation, Ovid Technologies (Wolters Kluwer Health), Vol. 102, No. 9 ( 2023-9), p. 840-845
    Abstract: The aim of the study is to evaluate the fall characteristics of wheelchair basketball players by sex and impairment classification using the official videos of the Tokyo 2020 Summer Paralympic Games. Design This was a video-based observational study. In total, 42 men’s and 31 women’s wheelchair basketball game videos were obtained from the official International Paralympic Committee. The videos were analyzed to assess the number of falls, playing time of the fall, playing phase, contact, foul judgment, fall location/direction, and the body part that first impacted the floor. Results A total of 1269 falls (men, n = 944; and women, n = 325) occurred. The analysis of men demonstrated significant differences in rounds, playing phase, location of fall, and body part first impacted. Women demonstrated significant differences in all categories except in rounds. Comparisons by functional impairment showed different trends for men and women. Conclusions The detailed observation of videos suggested that men are more likely to have dangerous falls. There is a necessity for discuss the prevention measures based on sex and impairment classification.
    Type of Medium: Online Resource
    ISSN: 1537-7385 , 0894-9115
    URL: Article
    DOI: 10.1097/PHM.0000000000002211
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 2272463-1
    detail.hit.zdb_id: 2049617-5
    SSG: 31
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  • 3
    Online Resource
    Online Resource
    Do “Stay-at-Home Exercise” Videos Induce Behavioral Changes in College Students? A Randomized Controlled Trial
    MDPI AG ; 2021
    In:  Sustainability Vol. 13, No. 21 ( 2021-10-20), p. 11600-
    Details
    In: Sustainability, MDPI AG, Vol. 13, No. 21 ( 2021-10-20), p. 11600-
    Abstract: The coronavirus disease pandemic has led to college students spending more time at home. “Stay-at-home exercise” videos to mitigate inactivity are currently available on various digital platforms; however, it is unclear whether these videos lead to behavioral changes among college students. This study aimed to investigate the improvement in physical activity (PA) resulting from “stay-at-home exercise” among college students. Overall, 150 college students were recruited, and 125 students (control group: 65; intervention group: 60) who completed baseline surveys were analyzed. The preliminary outcomes were PA, health-related quality of life (HRQoL), subjective well-being (SWB), and psychological stress (K6). Mixed model repeated-measure analysis of variance compared the outcomes before and after the intervention. After 8 weeks of “stay-at-home exercise”, there was no significant interaction in PA (F = 0.02, p = 0.89); however, a significant interaction for the general health subscale of HRQoL (F = 9.52), SWB (F = 6.70), and K6 (F = 7.83) was detected (p 〈 0.05). On comparing the pre- and post-intervention results, we found that only distributing an 8-week streaming video of “stay-at-home exercise” did not increase the amount of physical activity among participants, but it did have a positive effect on their mental health during the pandemic.
    Type of Medium: Online Resource
    ISSN: 2071-1050
    URL: Article
    DOI: 10.3390/su132111600
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2518383-7
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  • 4
    Online Resource
    Online Resource
    J-GEM optical and near-infrared follow-up of gravitational wave events during LIGO’s and Virgo’s third observing run
    Oxford University Press (OUP) ; 2021
    In:  Progress of Theoretical and Experimental Physics Vol. 2021, No. 5 ( 2021-05-18)
    Details
    In: Progress of Theoretical and Experimental Physics, Oxford University Press (OUP), Vol. 2021, No. 5 ( 2021-05-18)
    Abstract: The Laser Interferometer Gravitational-wave Observatory Scientific Collaboration and Virgo Collaboration (LVC) sent out 56 gravitational-wave (GW) notices during the third observing run (O3). The Japanese Collaboration for Gravitational wave ElectroMagnetic follow-up (J-GEM) performed optical and near-infrared observations to identify and observe an electromagnetic (EM) counterpart. We constructed a web-based system that enabled us to obtain and share information on candidate host galaxies for the counterpart, and the status of our observations. Candidate host galaxies were selected from the GLADE catalog with a weight based on the 3D GW localization map provided by LVC. We conducted galaxy-targeted and wide-field blind surveys, real-time data analysis, and visual inspection of observed galaxies. We performed galaxy-targeted follow-ups to 23 GW events during O3, and the maximum probability covered by our observations reached 9.8$\%$. Among these, we successfully started observations for 10 GW events within 0.5 days after the detection. This result demonstrates that our follow-up observation has the potential to constrain EM radiation models for a merger of binary neutron stars at a distance of up to $\sim$100 Mpc with a probability area of $\leq$ 500 deg$^2$.
    Type of Medium: Online Resource
    ISSN: 2050-3911
    URL: Article
    DOI: 10.1093/ptep/ptab007
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2021
    detail.hit.zdb_id: 2705045-2
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  • 5
    Online Resource
    Online Resource
    Morphological and Functional Characteristics of the Peroneus Muscles in Patients with Lateral Ankle Sprain: An Ultrasound-Based Study
    MDPI AG ; 2022
    In:  Medicina Vol. 58, No. 1 ( 2022-01-03), p. 70-
    Details
    In: Medicina, MDPI AG, Vol. 58, No. 1 ( 2022-01-03), p. 70-
    Abstract: Background and Objectives: The effectiveness of multiple ultrasound evaluations of the peroneus muscles morphology, including muscle cross-sectional area (CSA) and connective tissue, after lateral ankle sprain (LAS) is unknown. This study aimed to measure the peroneus muscles after LAS at three points, adding distal 75% to the conventional measurement points, in order to obtain a detailed understanding of the post-injury morphology and to propose a new evaluation index of the peroneus muscles for multiple LAS. Materials and Methods: Participants with and without LAS (LAS and control groups, 16 each) were recruited. The muscle cross-sectional area (CSA) and muscle echogenicity were measured using a B-mode ultrasound system at 25%, 50%, and 75% proximal to the line connecting the fibular head to the lateral malleolus. The ankle evertor strength was measured using a handheld dynamometer. Simultaneously, the peroneus longus (PL) and peroneus brevis (PB) muscle activities were measured using surface electromyography. Measurements for the LAS side, non-LAS side, and control leg were performed separately. Results: The CSA was significantly higher at 75% on the LAS side than on the non-LAS side and in the control leg. Muscle echogenicity of the LAS side at 75% was significantly lower than that of the non-LAS side and the control leg. Muscle activity of the PL was significantly lower and the PB was higher on the LAS side than on the non-LAS side and in the control leg. Conclusions: The PL was less active than the PB, while the PB was found to be overactive, suggesting that PB hypertrophy occurs due to an increase in the percentage of muscle fibers and a decrease in the connective tissue. Therefore, it is necessary to evaluate the condition of the PL and PB separately after LAS.
    Type of Medium: Online Resource
    ISSN: 1648-9144
    URL: Article
    DOI: 10.3390/medicina58010070
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2088820-X
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  • 6
    Online Resource
    Online Resource
    Characteristics of Falls Among Men’s Wheelchair Rugby Players in the Rio 2016 and Tokyo 2020 Summer Paralympic Games: A Video Analysis
    Termedia Sp. z.o.o. ; 2022
    In:  Journal of Human Kinetics Vol. 84 ( 2022-11-8), p. 233-237
    Details
    In: Journal of Human Kinetics, Termedia Sp. z.o.o., Vol. 84 ( 2022-11-8), p. 233-237
    Abstract: Wheelchair rugby is a contact sport in which falls are common and injury rates are high, yet the characteristics of the falls are still under-reported. We investigated the fall characteristics of men’s wheelchair rugby players by functional classification, using all 36 official match videos from the Rio 2016 and Tokyo 2020 summer Paralympic Games. The videos were analyzed to evaluate the number of falls, playing time when the fall occurred, playing phase (offense or defense), contact with other players, foul judgement, direction of the fall, and the body part first in contact with the floor. All 182 men’s wheelchair rugby players (Rio 2016, 94; Tokyo 2020, 88) were classified as low-point players or high-point players depending on their functional classification. A total of 200 falls were detected, 27 (13.5%) for low-point players and 173 (86.5%) for high-point players. Significant differences were noted between low-point players and high-point players in the direction of the fall and body part first in contact with the floor. High-point players had more falls in the forward and left-right directions, whereas low-point players were characterized by a higher percentage of falls in the left-right and backward directions. Additionally, high-point players landed on the floor with their hands with high frequency, whereas low-point players landed with their elbows and shoulders more often. Our findings suggest the significance of devising measures to prevent falls during men’s wheelchair rugby games according to their functional classification.
    Type of Medium: Online Resource
    ISSN: 1640-5544 , 1899-7562
    URL: Article
    DOI: 10.2478/hukin-2022-0104
    Language: Unknown
    Publisher: Termedia Sp. z.o.o.
    Publication Date: 2022
    detail.hit.zdb_id: 2503989-1
    SSG: 31
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  • 7
    Online Resource
    Online Resource
    Impact of the COVID-19 Pandemic on Life Space Extent and Apathy: A Comparison of Competitive Japanese Swimmers with and without Disabilities
    MDPI AG ; 2021
    In:  International Journal of Environmental Research and Public Health Vol. 18, No. 10 ( 2021-05-12), p. 5106-
    Details
    In: International Journal of Environmental Research and Public Health, MDPI AG, Vol. 18, No. 10 ( 2021-05-12), p. 5106-
    Abstract: Changes in the daily lives and mental health of people with disabilities due to the coronavirus disease (COVID-19) pandemic have not been reported. The Japanese government closed public facilities, including swimming pools, during the first wave of COVID-19, and many competitive swimmers lost their places of activities. This study aimed to investigate the impact of the COVID-19 pandemic on life space and apathy among swimmers and investigated differences in the impact on swimmers with and without disabilities. A total of 39 competitive swimmers participated in this study, including 11 male and nine female swimmers with disabilities (swimmers with disabilities = para-swimmers), and e11 male and eight female swimmers without disabilities. Baseline and follow-up web-based questionnaire surveys were conducted, and changes in life space and apathy scale (AS) were assessed. Female para-swimmers showed significantly lower apathy than female able-bodied subjects (para, during; 16.0 ± 1.9; after, 12.8 ± 3.2; non-disabled; during, 10.5 ± 4.4; after, 10.6 ± 4.8; p 〈 0.05). Female swimmers with disabilities may be more likely to experience worsening mental health due to changes in their lifestyle.
    Type of Medium: Online Resource
    ISSN: 1660-4601
    URL: Article
    DOI: 10.3390/ijerph18105106
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2175195-X
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  • 8
    Online Resource
    Online Resource
    Analysis of wheelchair falls in team sports at the Paralympic Games: video-based descriptive comparison between the Rio 2016 and Tokyo 2020 games
    BMJ ; 2022
    In:  BMJ Open Vol. 12, No. 8 ( 2022-08), p. e060937-
    Details
    In: BMJ Open, BMJ, Vol. 12, No. 8 ( 2022-08), p. e060937-
    Abstract: To identify the fall characteristics of athletes in wheelchair rugby and wheelchair basketball during the Tokyo 2020 Paralympic Games and descriptively compare these with those of the Rio 2016 Paralympic Games. Design Cross-sectional analysis. Primary and secondary outcome measures We obtained video footage from the International Paralympic Committee of the Tokyo 2020 Paralympic Games that included 8 teams from each of the 18 wheelchair rugby and 10 wheelchair basketball games (men and women). The data were analysed to evaluate the number of falls, class difference (low or high pointer), time of play during the fall, phase of play, contact with other athletes, fall direction, fall location and the body part that first contacted the floor during the fall. These data from the Rio 2016 and Tokyo 2020 games were compared. Results Overall, 430 falls (rugby, 104; men’s basketball, 230 and women’s basketball, 96) occurred (average per game ±SD: 5.8±3.1, 23.0±5.4 and 9.6±5.0, respectively). Significant differences in class, direction, fall location and body part point of contact between the three sports were observed. In wheelchair rugby, falls occurred mainly in high pointers and tended to be more lateral due to contact. In wheelchair basketball, falls occurred more in female high-pointers and in male low pointers, with more forward falls due to forward contact. Unlike in the Rio 2016 games, no difference between the events based on the presence or absence of contact was observed in the Tokyo 2020 games. Conclusions The number of falls increased in Tokyo 2020 compared with Rio 2016, with no significant difference in the characteristics of falls between the Rio 2016 and Tokyo 2020 games. Only in men’s wheelchair basketball, the number of falls in low pointers significantly increased in the Tokyo 2020 games when compared with that in the Rio 2016 games.
    Type of Medium: Online Resource
    ISSN: 2044-6055 , 2044-6055
    URL: Article
    DOI: 10.1136/bmjopen-2022-060937
    Language: English
    Publisher: BMJ
    Publication Date: 2022
    detail.hit.zdb_id: 2599832-8
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  • 9
    Online Resource
    Online Resource
    The Relationship between Modified Short Physical Performance Battery and Falls: A Cross-Sectional Study of Older Outpatients
    MDPI AG ; 2021
    In:  Geriatrics Vol. 6, No. 4 ( 2021-10-30), p. 106-
    Details
    In: Geriatrics, MDPI AG, Vol. 6, No. 4 ( 2021-10-30), p. 106-
    Abstract: The Short Physical Performance Battery (SPPB) is a physical fall-risk screening tool and predictor of adverse health effects for the older. Its limited use in Japan is due to the relative ease for high-functioning older adults to achieve perfect scores. Japanese researchers thus created a community-based SPPB (SPPB-com). This study investigated whether the SPPB-com score can distinguish between older patients classified as “fallers” and “non-fallers.” Participants comprised 185 older outpatients aged 65 and above who self-reported their history of accidental falls and relevant physical activity. Fall risk was assessed using SPPB and SPPB-com. Handgrip strength, maximum isometric knee extensor strength, and maximum walking speed were measured as physical functions. Multivariate logistic regression and receiver-operating characteristic analyses determined criteria indicating faller status. Fallers were older and had lower physical function, physical activity, SPPB, and SPPB-com scores than non-fallers. Multivariate logistic regression analysis showed SPPB (OR 0.76, 95% CI 0.59–0.99, p = 0.045) and SPPB-com (OR 0.63, 95% CI 0.45–0.87, p = 0.005) scores were both independently associated with prior falls. The SPPB-com score may function as a fall-risk assessment tool for older outpatients, and its combined use with SPPB can increase the accuracy and precision of distinction between fallers and non-fallers.
    Type of Medium: Online Resource
    ISSN: 2308-3417
    URL: Article
    DOI: 10.3390/geriatrics6040106
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2934571-6
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  • 10
    Online Resource
    Online Resource
    Effect of thoracic expansion restriction on scapulothoracic and glenohumeral joint motion during shoulder external rotation
    IOS Press ; 2022
    In:  Journal of Back and Musculoskeletal Rehabilitation Vol. 35, No. 6 ( 2022-11-12), p. 1399-1406
    Details
    In: Journal of Back and Musculoskeletal Rehabilitation, IOS Press, Vol. 35, No. 6 ( 2022-11-12), p. 1399-1406
    Abstract: BACKGROUND: Shoulder external rotation in the throwing motion involves movement of the scapulothoracic and glenohumeral joints, thoracic spine, and the thorax. Restriction of thoracic expansion may decrease scapulothoracic joint motion and compensate by excessive glenohumeral joint motion. However, it is unclear how restricting the expansion of the thorax alters shoulder motion. OBJECTIVE: To elucidate changes in scapulothoracic and glenohumeral joint movements caused by restricted thoracic expansion. METHODS: Kinematic data were obtained using an electromagnetic tracking device (Liberty; Polhemus), from 18 male participants, during shoulder external rotation in the sitting position with and without restriction of thoracic expansion. The displacements from the start position to the maximum external rotation position were compared, and Pearson’s correlation coefficient was calculated. RESULTS: A significant difference was observed in the scapulothoracic posterior tilt angle (P 〈 0.01) and glenohumeral external rotation angle (P 〈 0.01). A significant positive correlation existed between scapulothoracic posterior tilt and glenohumeral external rotation (P 〈 0.05) with and without restriction. CONCLUSIONS: Restriction of thoracic expansion decreased scapulothoracic motion and increased glenohumeral motion. Thus, a decrease in thoracic expansion may change scapulothoracic and glenohumeral movements, which may be a risk factor for throwing injuries.
    Type of Medium: Online Resource
    ISSN: 1878-6324 , 1053-8127
    URL: Article
    DOI: 10.3233/BMR-220006
    Language: Unknown
    Publisher: IOS Press
    Publication Date: 2022
    detail.hit.zdb_id: 2029336-7
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