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  • 1
    Online Resource
    Online Resource
    Lumbar Intervertebral Disk Degeneration in Athletes
    SAGE Publications ; 2009
    In:  The American Journal of Sports Medicine Vol. 37, No. 1 ( 2009-01), p. 149-155
    Details
    In: The American Journal of Sports Medicine, SAGE Publications, Vol. 37, No. 1 ( 2009-01), p. 149-155
    Abstract: Several studies have reported that physical loading related to competitive sports activities is associated with lumbar intervertebral disk degeneration. However, the association between types of sports activities and disk degeneration has not been clarified. Hypothesis The frequencies of disk degeneration may vary with the competitive sport because of the different postures and actions specific to each sport. Study Design Cross-sectional study (prevalence); Level of evidence, 3. Methods Study participants were 308 well-trained university athletes (baseball players, basketball players, kendo competitors, runners, soccer players, swimmers) and 71 nonathlete university students (reference group). Disk degeneration was evaluated using T2-weighted magnetic resonance imaging. A self-reported questionnaire concerning low back pain was also conducted. Results The proportions of the participants who had disk degeneration among the baseball players (odds ratio, 3.23) and the swimmers (odds ratio, 2.95) were significantly higher than among the nonathletes using logistic regression analysis. When all patients were grouped together, the association between lifetime experience of low back pain and participants with disk degeneration was significant, and a linear association between the degree of severest low back pain experienced and participants with disk degeneration, analyzed by a Cochran-Mantel-Haenszel test, was also significant. Conclusion Continuous competitive baseball and swimming activities during youth may be associated with disk degeneration. Furthermore, the study indicates that the experience of severe low back pain might be a predictor of disk degeneration in youth. The authors hope that preventive measures and management to protect against disk degeneration and low back pain in athletes will be established by further studies based on these results.
    Type of Medium: Online Resource
    ISSN: 0363-5465 , 1552-3365
    URL: Article
    DOI: 10.1177/0363546508323252
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2009
    detail.hit.zdb_id: 2063945-4
    SSG: 31
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  • 2
    Online Resource
    Online Resource
    Effectiveness of Lumbar Stabilization Exercises for Reducing Chronic Low Back Pain and Improving Quality-of-Life
    Society of Physical Therapy Science ; 2011
    In:  Journal of Physical Therapy Science Vol. 23, No. 4 ( 2011), p. 679-681
    Details
    In: Journal of Physical Therapy Science, Society of Physical Therapy Science, Vol. 23, No. 4 ( 2011), p. 679-681
    Type of Medium: Online Resource
    ISSN: 0915-5287 , 2187-5626
    URL: Article
    DOI: 10.1589/jpts.23.679
    Language: English
    Publisher: Society of Physical Therapy Science
    Publication Date: 2011
    detail.hit.zdb_id: 2038898-6
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  • 3
    Online Resource
    Online Resource
    Factors associated with lumbar intervertebral disc degeneration in the elderly
    Elsevier BV ; 2008
    In:  The Spine Journal Vol. 8, No. 5 ( 2008-09), p. 732-740
    Details
    In: The Spine Journal, Elsevier BV, Vol. 8, No. 5 ( 2008-09), p. 732-740
    Type of Medium: Online Resource
    ISSN: 1529-9430
    URL: Article
    DOI: 10.1016/j.spinee.2007.07.392
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2008
    detail.hit.zdb_id: 2057875-1
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  • 4
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    Mechanical loading influences the lumbar intervertebral disc. A cross‐sectional study in 308 athletes and 71 controls
    Wiley ; 2021
    In:  Journal of Orthopaedic Research Vol. 39, No. 5 ( 2021-05), p. 989-997
    Details
    In: Journal of Orthopaedic Research, Wiley, Vol. 39, No. 5 ( 2021-05), p. 989-997
    Abstract: There is evidence in animal populations that loading and exercise can positively impact the intervertebral disc (IVD). However, there is a paucity of information in humans. We examined the lumbar IVDs in 308 young athletes across six sporting groups (baseball, swimming, basketball, kendo, soccer, and running; mean age 19 years) and 71 nonathletic controls. IVD status was quantified via the ratio of IVD to vertebral body height (IVD hypertrophy) and ratio of signal intensity in the nucleus to that in the annulus signal (IVD nucleus hydration) on sagittal T2‐weighted magnetic resonance imaging. P values were adjusted via the false discovery rate method to mitigate false positives. In examining the whole collective, compared to referents, there was evidence of IVD hypertrophy in basketball ( P  ≤ .029), swimming ( P  ≤ .010), soccer ( P  = .036), and baseball ( P  = .011) with greater IVD nucleus hydration in soccer ( P  = .007). After matching participants based on back‐pain status and body height, basketball players showed evidence of IVD hypertrophy ( P  ≤ .043) and soccer players greater IVD nucleus hydration ( P  = .001) than referents. Greater career duration and training volume correlated with less (ie, worse) IVD nucleus hydration, but explained less than 1% of the variance in this parameter. In this young collective, increasing age was associated with increased IVD height. The findings suggest that basketball and soccer may be associated with beneficial adaptations in the IVDs in young athletes. In line with evidence on other tissues, such as muscle and bone, the current study adds to evidence that specific loading types may beneficially modulate lumbar IVD properties.
    Type of Medium: Online Resource
    ISSN: 0736-0266 , 1554-527X
    URL: Issue
    URL: Article
    DOI: 10.1002/jor.v39.5
    DOI: 10.1002/jor.24809
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2050452-4
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  • 5
    Online Resource
    Online Resource
    Relationship between Low Back Pain and Competitive Sports Activities during Youth
    SAGE Publications ; 2010
    In:  The American Journal of Sports Medicine Vol. 38, No. 4 ( 2010-04), p. 791-796
    Details
    In: The American Journal of Sports Medicine, SAGE Publications, Vol. 38, No. 4 ( 2010-04), p. 791-796
    Abstract: Low back pain is a significant problem not only for the adult, but also during youth. However, the relationship between low back pain during youth and the duration or types of competitive sports has not been clarified. Hypothesis Low back pain during youth is associated with the duration and types of competitive sports. Study Design Cross-sectional study; Level of evidence, 4. Methods Study participants were 4667 new university students who, from 2004 to 2006, answered a questionnaire concerning low back pain and their participation in competitive sports. The participants were divided into a “no” group (NO), a middle group (MID), and a high group (HI) based on the duration of participation in competitive sports. The answers to the questionnaire were analyzed using the Cochran-Mantel-Haenszel test. Furthermore, we selected students who had participated in the same sport for 5 or more years and categorized the students according to the type of sport. Differences in low back pain among the groups were analyzed using logistic regression with the NO group as the reference group. Results There were statistically significant linear associations in the NO, MID, and HI groups, with 50.0%, 61.8%, and 71.7%, respectively, of the students experiencing low back pain. Among the NO, MID, and HI groups, 4.4%, 5.7%, 9.6%, respectively, had experienced school absence due to low back pain; and 4.0%, 8.5%, and 14.6%, respectively had low back pain with associated lower extremity pain and numbness. All 8 sports groups that were analyzed had experienced low back pain significantly higher than the NO group, and the odds ratios differed by sport with the highest (3.8) for the volleyball group. Conclusion Excessive exposure to competitive sports activities during youth was associated with low back pain and symptoms in the lower extremities, with the severity varying with the sport. To reduce low back pain in youth, factors that may be causing low back pain, such as sport-specific postures and motions, need to be investigated.
    Type of Medium: Online Resource
    ISSN: 0363-5465 , 1552-3365
    URL: Article
    DOI: 10.1177/0363546509350297
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2010
    detail.hit.zdb_id: 2063945-4
    SSG: 31
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  • 6
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    Online Resource
    Lumbar Intervertebral Disk Degeneration in Elite Competitive Swimmers : A Case Control Study
    SAGE Publications ; 2007
    In:  The American Journal of Sports Medicine Vol. 35, No. 8 ( 2007-08), p. 1341-1345
    Details
    In: The American Journal of Sports Medicine, SAGE Publications, Vol. 35, No. 8 ( 2007-08), p. 1341-1345
    Abstract: The majority of orthopaedic problems experienced by competitive swimmers are related to pain in the shoulder, low back, and knee. Three of 39 national swim team members were hampered in their performance due to lumbar disk herniation at an international competition in 2001. There has been no previous research into lumbar disk degeneration in elite competitive swimmers. Hypothesis Excessive competitive swimming activities accelerate lumbar disk degeneration. Study Design Case control study; Level of evidence, 3. Methods Fifty-six elite swimmers (high-load group, 35 men and 21 women; mean age, 19.6 years) and a control group of 38 university recreational level swimmers (low-load group, 24 men and 14 women; mean age, 21.1 years) were evaluated for lumbar disk degeneration using magnetic resonance imaging. We compared the prevalence of disk degeneration and the disk level between the 2 groups and further investigated the relationship among their symptoms, swimming styles, and disk degeneration. Results Thirty-eight (68%) elite swimmers and 11 (29%) controls had degenerated disks at various disk levels, and the prevalence was significantly greater in the elite swimmers (P = .0002). Comparison between the 2 groups of the prevalence of disk degeneration at each level revealed that the disk level of L5-S1 was significantly more frequently degenerated in the high-load group (P = .026). There was no significant relationship observed among the variables of low back pain symptoms, swimming strokes, and disk degeneration. Conclusion Excessive competitive swimming activities might exaggerate lumbar intervertebral disk degeneration, especially in the L5-S1 intervertebral segment. Keywords lumbar intervertebral disk; disk degeneration; swimming; sports
    Type of Medium: Online Resource
    ISSN: 0363-5465 , 1552-3365
    URL: Article
    DOI: 10.1177/0363546507300259
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2007
    detail.hit.zdb_id: 2063945-4
    SSG: 31
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  • 7
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    Magnetic resonance imaging findings related to sacroiliac joint pain in high-performance athletes
    IOS Press ; 2023
    In:  Journal of Back and Musculoskeletal Rehabilitation ( 2023-07-03), p. 1-9
    Details
    In: Journal of Back and Musculoskeletal Rehabilitation, IOS Press, ( 2023-07-03), p. 1-9
    Abstract: BACKGROUND: Sacroiliac joint (SIJ) dysfunction in athletes affects competitiveness. However, the pathology and imaging features have not been clarified. OBJECTIVE: To clarify the association between SIJ pain and MRI findings in high-performance athletes. METHODS: Fifty-two Japanese high-performance athletes with or without SIJ pain were recruited. MRI short tau inversion recovery (STIR) semi-coronal and semi-axial images of their SIJs were taken. The relationships between high-signal changes in MRI-STIR and SIJ pain and pain duration were investigated. Six athletes with continuous SIJ pain were prospectively followed. RESULTS: The proportion of athletes with high-signal changes in the SIJ was significantly higher among athletes with SIJ pain for one month or more (76.9%, 10/13) than among athletes with SIJ pain for less than one month (18.2%, 2/11) and among athletes without SIJ pain (28.6%, 8/28). High-signal changes on painful SIJs were most often present in the sacrum. In three of the six athletes who were prospectively followed, the high-signal area and intensity on MRI both diminished as their symptoms improved. CONCLUSIONS: High-signal changes of the SIJ on MRI-STIR images in high-performance athletes may reflect their SIJ pain.
    Type of Medium: Online Resource
    ISSN: 1878-6324 , 1053-8127
    URL: Article
    DOI: 10.3233/BMR-220323
    Language: Unknown
    Publisher: IOS Press
    Publication Date: 2023
    detail.hit.zdb_id: 2029336-7
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  • 8
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    Collection of 2429 constrained headshots of 277 volunteers for deep learning
    Springer Science and Business Media LLC ; 2022
    In:  Scientific Reports Vol. 12, No. 1 ( 2022-03-08)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 12, No. 1 ( 2022-03-08)
    Abstract: Deep learning has rapidly been filtrating many aspects of human lives. In particular, image recognition by convolutional neural networks has inspired numerous studies in this area. Hardware and software technologies as well as large quantities of data have contributed to the drastic development of the field. However, the application of deep learning is often hindered by the need for big data and the laborious manual annotation thereof. To experience deep learning using the data compiled by us, we collected 2429 constrained headshot images of 277 volunteers. The collection of face photographs is challenging in terms of protecting personal information; we therefore established an online procedure in which both the informed consent and image data could be obtained. We did not collect personal information, but issued agreement numbers to deal with withdrawal requests. Gender and smile labels were manually and subjectively annotated only from the appearances, and final labels were determined by majority among our team members. Rotated, trimmed, resolution-reduced, decolorized, and matrix-formed data were allowed to be publicly released. Moreover, simplified feature vectors for data sciences were released. We performed gender and smile recognition by building convolutional neural networks based on the Inception V3 model with pre-trained ImageNet data to demonstrate the usefulness of our dataset.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-022-07560-2
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2615211-3
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  • 9
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    Online Resource
    Identification and characterization of a novel Enterococcus bacteriophage with potential to ameliorate murine colitis
    Springer Science and Business Media LLC ; 2021
    In:  Scientific Reports Vol. 11, No. 1 ( 2021-10-12)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 11, No. 1 ( 2021-10-12)
    Abstract: Increase of the enteric bacteriophages (phage), components of the enteric virome, has been associated with the development of inflammatory bowel diseases. However, little is known about how a given phage contributes to the regulation of intestinal inflammation. In this study, we isolated a new phage associated with Enterococcus gallinarum , named phiEG37k , the level of which was increased in C57BL/6 mice with colitis development. We found that, irrespective of the state of inflammation, over 95% of the E. gallinarum population in the mice contained phiEG37k prophage within their genome and the phiEG37k titers were proportional to that of E. gallinarum in the gut. To explore whether phiEG37k impacts intestinal homeostasis and/or inflammation, we generated mice colonized either with E. gallinarum with or without the prophage phiEG37k . We found that the mice colonized with the bacteria with phiEG37k produced more Mucin 2 (MUC2) that serves to protect the intestinal epithelium, as compared to those colonized with the phage-free bacteria. Consistently, the former mice were less sensitive to experimental colitis than the latter mice. These results suggest that the newly isolated phage has the potential to protect the host by strengthening mucosal integrity. Our study may have clinical implication in further understanding of how bacteriophages contribute to the gut homeostasis and pathogenesis.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-021-99602-4
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2615211-3
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  • 10
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    Online Resource
    Stress fracture of the thoracic spine in an elite rhythmic gymnast: A case report
    University of Tokushima Faculty of Medicine ; 2016
    In:  The Journal of Medical Investigation Vol. 63, No. 1.2 ( 2016), p. 119-121
    Details
    In: The Journal of Medical Investigation, University of Tokushima Faculty of Medicine, Vol. 63, No. 1.2 ( 2016), p. 119-121
    Type of Medium: Online Resource
    ISSN: 1343-1420 , 1349-6867
    URL: Article
    DOI: 10.2152/jmi.63.119
    Language: English
    Publisher: University of Tokushima Faculty of Medicine
    Publication Date: 2016
    detail.hit.zdb_id: 2155542-4
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