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Kawabuchi K, Yamane K, Maniwa S, Inoue K, Nakamura M. Epimuscular myofascial force transmission between the levator scapulae muscle and the upper fiber of the serratus anterior or rhomboid minor muscles. Clin Biomech (Bristol, Avon) 2024; 112:106194. [PMID: 38335837 DOI: 10.1016/j.clinbiomech.2024.106194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/28/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND This study investigated the epimuscular myofascial force transmission between the levator scapulae, serratus anterior, and rhomboid minor muscles. METHODS The participants included 10 healthy males (a total of 20 shoulders). Differences in the shear moduli of the levator scapulae, serratus anterior, and rhomboid minor muscles were measured in the resting and levator scapulae stretching positions using shear wave elastography. The correlation between the rates of change for each muscle was also verified. FINDINGS The results demonstrated a notable increase in the shear modulus from the resting to stretching positions for levator scapulae (42.9 ± 17.6 kPa vs. 52.4 ± 15.2 kPa) and serratus anterior (32.8 ± 12.9 kPa vs. 58.4 ± 18.5 kPa) (P = 0.02, P < 0.01). However, there was no significant difference in the shear modulus for the rhomboid minor between the resting (44.0 ± 19.2 kPa) and stretching (41.0 ± 20.2 kPa) positions (P = 0.40). Moreover, a significant positive correlation was observed between rates of change for the levator scapulae and serratus anterior muscles (P = 0.04, r = 0.459). INTERPRETATION These findings indicate that the shear modulus of the serratus anterior increased with the stretching of the levator scapulae, suggesting the occurrence of epimuscular myofascial force transmission between these two muscles with different muscle insertions.
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Affiliation(s)
- Keita Kawabuchi
- Rehabilitation Room, Tottori Prefectural Central Hospital, 730 Ezu, Tottori City, Tottori 680-0901, Japan.
| | - Kenta Yamane
- Rehabilitation Room, Tottori Prefectural Central Hospital, 730 Ezu, Tottori City, Tottori 680-0901, Japan
| | - Shota Maniwa
- Rehabilitation Room, Tottori Prefectural Central Hospital, 730 Ezu, Tottori City, Tottori 680-0901, Japan
| | - Kyohei Inoue
- Rehabilitation Room, Tottori Prefectural Central Hospital, 730 Ezu, Tottori City, Tottori 680-0901, Japan
| | - Masatoshi Nakamura
- Faculty of Rehabilitation Science, Nishi Kyushu University, 4490-0 Ozaki, Kanzaki, Saga 842-8585, Japan
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Kawabuchi K, Nakamura M. Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears. JSES Int 2023; 7:2356-2360. [PMID: 37969537 PMCID: PMC10638572 DOI: 10.1016/j.jseint.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023] Open
Abstract
Background One of the pain-related factors in rotator cuff tears (RCTs) is abnormal scapular motion, which is thought to be related to the levator scapulae muscle activation. Additionally, attention has recently focused on the peak systolic velocity (PSV) as one of the causes of pain, but blood flow outside of the vessels supplying the rotator cuff has not been clarified. This study aimed to determine the difference in PSV in the dorsal scapular artery (DSA), which is the vessel that supplies the levator scapulae muscles, and the association between PSV and pain and shoulder function in patients with RCTs between the tear and nontear sides. Methods This study included 31 patients with RCTs with tear and nontear sides. Magnetic resonance imaging and radiographic examinations included Cofield classification, Goutallier classification, thickening of the coracohumeral ligament, and measurement of the acromiohumeral interval. Clinical evaluation included an automatic range of motion (ROM) for flexion, abduction, and external rotation (ER), a visual analog scale, and the Shoulder36. PSV was evaluated using ultrasound pulsed Doppler mode to assess PSV of DSA. The PSV of DSA on the first rib was drawn in the medial aspect of the suprascapular angle in the long axis, and the maximum PSV waveform was measured three times. The average value was used for further analysis. Results The PSV in the DSA was significantly higher (P = .04, 95% confidence interval: 0.2-7.6) on the tear (22.6 ± 7.4 cm/s) than the nontear sides (18.9 ± 6.9 cm/s). In addition, a significant negative correlation (r = -0.46, P = .0087) was found between PSV in DSA and ER on the tear side. Conclusion This study revealed a significantly increased PSV in the DSA on the tear side in RCTs and negatively correlated with ER ROM. The results suggest that increased PSV in the DSA may contribute to ER ROM limitation in the glenohumeral joint.
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Affiliation(s)
- Keita Kawabuchi
- Rehabilitation Room, Tottori Prefectural Central Hospital, Tottori, Japan
| | - Masatoshi Nakamura
- Faculty of Rehabilitation Science, Nishi Kyushu University Ozaki, Kanzaki, Saga, Japan
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Michishita T, Kobayashi S, Katsuya T, Ogihara T, Kawabuchi K. Evaluation of the Antiobesity Effects of an Amino Acid Mixture and Conjugated Linoleic Acid on Exercising Healthy Overweight Humans: A Randomized, Double-blind, Placebo-controlled Trial. J Int Med Res 2010; 38:844-59. [DOI: 10.1177/147323001003800311] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This single-centre, randomized, double-blind, placebo-controlled trial investigated the effects of administering a mixture of four amino acids (lysine, proline, alanine and arginine) with or without conjugated linoleic acid to healthy overweight humans before and after exercising. Forty-one healthy subjects (body mass index ≥ 23 to < 30 kg/m2) completed the study following randomization to receive either placebo or one of three test supplements: amino acid mixture 0.76 g/day; amino acid mixture 1.52 g/day; or amino acid mixture 1.52 g/day coadministered with conjugated linoleic acid 1.6 g/day. Each of the study treatments was administered 30 min before and immediately after a period of daily exercise, which was delivered by an exercise expert, for a period of 12 weeks. When compared with the placebo group, several indicators, such as waist and hip circumferences, were found to have significantly decreased in the test supplement groups compared with the placebo. These results suggest that ingestion of these supplements might enhance the fat-burning effects of exercise.
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Affiliation(s)
- T Michishita
- Health Care Economics, Department of Health Science Policies, Graduate School of Tokyo Medical and Dental University, Tokyo, Japan
- EBS Central Research Institute, EBS Inc., Hiroshima, Japan
| | - S Kobayashi
- EBS Central Research Institute, EBS Inc., Hiroshima, Japan
| | - T Katsuya
- Department of Clinical Gene Therapy, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T Ogihara
- Department of Geriatric Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Kawabuchi
- Health Care Economics, Department of Health Science Policies, Graduate School of Tokyo Medical and Dental University, Tokyo, Japan
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Kawabuchi K. [Health economics in radiology]. Nihon Igaku Hoshasen Gakkai Zasshi 2001; 61:471-5. [PMID: 11577430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Kawabuchi K. [Fact-findings from comparison between Japan and U.S. in terms of visiting rate and oral health]. Kokubyo Gakkai Zasshi 2001; 68:179-83. [PMID: 11496406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- K Kawabuchi
- Section of Health Care Economics, Department of Health Science Politics, Division of Public Health, Graduate School, Tokyo Medical and Dental University
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Kawabuchi K. Payment system under consideration of casemix--DRGs is applicable in Japan? Jpn Hosp 2000:23-41. [PMID: 11142219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Affiliation(s)
- K Kawabuchi
- Japan Medical Association Research Institute, 2-28-16 Honkomagome, Bunkyo-ku, Tokyo, 113-8621, Japan.
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Abstract
OBJECTIVE Cost containment is a large concern. Japanese medical institutions operate on a fee-for-service basis, giving few incentives for healthcare providers to control the number of procedures performed or to save the healthcare costs. Thus, the objective of this study was to determine the feasibility of applying diagnosis-related groups (DRGs) in Japan, since systems that employ DRGs provide these incentives. DESIGN AND SETTING Three types of data (patient discharge, hospital cost and hospital characteristics data) were collected from 17 acute general hospitals in Japan. These data were used to calculate variance (R2) for length of stay for each of 3 US-based DRG systems [health care financing administration (HCFA)-DRG, all-patient (AP)-DRG, all-patient refined (APR)-DRG] in order to determine which of the systems is most appropriate for use in Japan to classify patients. We also examined the financial impact for hospitals through budget simulations when DRG is used as a payment tool. MAIN OUTCOME MEASURES AND RESULTS Of the DRG alternatives examined, we have found that the AP-DRGs are the preferred alternative. The data in Japan are not sufficiently complete to support the APR-DRGs, and we believe that the HCFA-DRGs are not as clinically sophisticated as the AP-DRGs and may not be as well accepted by the medical community. As there is a clear intention in Japan of developing Japanese-specific DRGs, the AP-DRGs represent a sound starting point for this effort. Our work demonstrates that basing payments on DRGs is partially feasible for Japan. This means that the treated case was found to be feasible as the unit of payment. CONCLUSION Changing to a prospective payment system in Japan will give hospitals powerful incentives to become more efficient. This, in turn, will open hospital capacity, which should assist Japan in providing the care needed by an aging population in a cost-effective way.
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Affiliation(s)
- K Kawabuchi
- Japan Medical Association Research Institute, 2-28-16 Honkomagome, Buhkyo-ku, Tokyo, 113-8621, Japan
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Kawabuchi K. A forecast for the climate of Japanese health care reform. From the standpoint of health care delivery and payment system. Jpn Hosp 1999:23-30. [PMID: 11184920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- K Kawabuchi
- Department of Economics, Nihon Fukushi University, Aichi-ken, Japan
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Kawabuchi K. Major issues on shift to clusters of ryoyo-type beds from general hospitals in care insurance scheme. Jpn Hosp 1999:47-57. [PMID: 11184922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- K Kawabuchi
- Department of Economics, Nihon Fukushi University, Aichi-ken, Japan
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Kawabuchi K. Managed care opporties in Japan. Jpn Hosp 1998; 17:45-54. [PMID: 10187298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- Department of Management Development, Faculty of Economics, Nihon Fukushi University, Okuda, Mihama-cho, Chita-gun, Aichi-ken, Japan
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Kawabuchi K. Labor economics on physicians and nurses. Jpn Hosp 1998; 17:27-32. [PMID: 10187295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- Department of Management Development, Faculty of Economics, Nihon Fukushi University, Okuda, Mihama-cho, Chita-gun, Aichi-ken, Japan
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Kawabuchi K. Prefectural differentials in medical expenditure for the elderly--why health care costs for the elderly are lower in Nagano prefecture. Jpn Hosp 1998; 17:7-12. [PMID: 10187299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- Department of Management Development, Faculty of Economics, Nihon Fukushi University, Okuda, Mihama-cho, Chita-gun, Aichi-ken, Japan
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Kawabuchi K. Features and problems of Japan's fee schedule for health care services. Jpn Hosp 1997; 16:31-42. [PMID: 10174047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Affiliation(s)
- K Kawabuchi
- National Institute of Health Services Management
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Kawabuchi K. Analysis of structural changes in Japan's health care expenditure. Jpn Hosp 1997; 16:5-10. [PMID: 10174049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- National Institute of Health Services Management
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Kawabuchi K. Policy for containment of health care costs in developed countries--tasks and measures in health care supply. Jpn Hosp 1997; 16:75-82. [PMID: 10174054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- National Institute of Health Services Management
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Kawabuchi K. Economic analysis of preventive medicine in Japan--based on two empirical studies. Jpn Hosp 1997; 16:55-62. [PMID: 10174051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- National Institute of Health Services Management
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Kawabuchi K. Health care expenditure and hospital management. World Hosp Health Serv 1996; 33:13-8. [PMID: 10169448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The article briefly describes the health financing system of Japan and then proceeds to analyse expenditure. The focus, however, of the paper is to express concern at the poor level of management in the hospital systems in Japan. The author urges hospital directors to engage in a much more pro-active management approach.
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Affiliation(s)
- K Kawabuchi
- National Institute of Health Services Management, Japan
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Kawabuchi K. Deregulation and business opportunities. Jpn Hosp 1996; 15:49-54. [PMID: 10161856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Kawabuchi K. Health care expenditure and hospital management. Jpn Hosp 1996; 15:7-13. [PMID: 10161860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- National Institute of Health Services Management
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Kawabuchi K. Diversified needs and aging population. Jpn Hosp 1996; 15:35-41. [PMID: 10161854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Kawabuchi K. The role of teaching hospital in Japanese health care system. Jpn Hosp 1995; 14:21-33. [PMID: 10151317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- K Kawabuchi
- Department of Health Care Economics, National Institute of Health Services Management
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