Volume 5 Issue 1
2020-04-21 Research Article
Purpose: The time course of muscle stiffness of muscles around the shoulder joint and the scapula was investigated according to the degree of muscle weakness. This study was conducted to clarify the recovery process of muscle hardness of the muscles surrounding the shoulder joint and the scapula after the shoulder internal and external rotational exercises.
Methods: Participants were 7 healthy men (23.6 ± 1.4 yr), repeated internal and external rotations of the shoulder joint until the mean work of three internal and external rotations each was less than 90%, 80%, or 70% of the standard. Muscle hardness of the supraspinatus muscle, the infraspinatus muscle, and the rhomboideus muscle was measured before, immediately after, and 1to 72 hr after each bout of exercise.
Muscle hardness was measured as Strain ratio using an ultrasound real-time tissue elastography. In addition, the rates of change were calculated using muscle hardness before exercise as the standard, to compare differences in the rate of change after exercise between conditions.
Results: The rates of change of the Strain ratio between measurements taken before and after exercise were compared among conditions for the infraspinatus muscle. Results were -7.1 ± 5.3, -15.2 ± 10.3, and -25.0 ± 8.8, respectively, at 90%, 80%, and 70%, with a significant difference between a decrease to 90% and to 70% (p < 0.05). Significant difference was found in the change over time for the infraspinatus muscle only between values obtained immediately after exercise and after 72 hr at a decrease to 70% (p < 0.05).
Conclusion: Those results described above demonstrated that the infraspinatus muscle and the supraspinatus muscle were harder immediately after exercise when the shoulder joint was at a higher degree of muscle weakness, and demonstrated that the change was likely to be recovered after 72 hr.
Abstract Read Full Article HTML DOI: 10.29328/journal.jsmt.1001049 Cite this Article
2021-07-28 Review Article
Leonardo Tibiriçá Corrêa, Juliana Weckx Peña Muñoz6, Beatriz do Prado Pacca Faria, Jeferson Santana, Leandro Yanase Rocha, EstherLopes Ricci, Lorena de Paula Pantaleon, Leonardo Ribeiro de Paula, Guilherme Mendes Ribeiro, Vinicius Barroso Hirota and André Rinaldi Fukushima*
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2021-05-26 Research Article
G Javier Cavazos Jr.* and Lawrence B Harkless
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2021-01-26 Mini Review
Physical activity can change the physiological and psychological circumstances during COVID-19 pandemic: A narrative review
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2020-05-05 Research Article
‘Rotational alignment on patients’ clinical outcome of total knee arthroplasty: Distal femur axillary X-ray view to qualify rotation of the femoral component
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2020-04-21 Research Article
Kubota Atsushi*, Takayanagi Chiho and Kishimoto Kohei
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2019-12-24 Research Article
The effect of a European-based exercise program upon the health-related physical fitness of individuals with intellectual disabilities: The alive and kicking perspective
Skordilis Emmanouil*, Greenlees Iain, Chrysagis Nikolaos, Grammatopoulou Eirini, Arriaga Andres, Vaquero Fernandez Almudena, Gaillard Joel, Skordilis Antonios, Dias Joao, Papadopoulou Vassiliki and Serras Dionysios
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2019-11-01 Research Article
Cavia MM*, Moreno A, Fernández-Trabanco B, Carrillo C and Alonso-Torre SR
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2019-08-16 Research Article
Comparison of selected lower limb biomechanical variables between university of ibadan sportsmen with and without patellofemoral pain syndrome
Ayodeji Ayodele Fabunmi* and Samson Oluwaseyi Oladipupo
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2019-08-09 Research Article
Assessment of shoulder pain and somatic dysfunction in young competitive swimmers: Preventive Osteopathic Manipulative Treatment
Fanny Granger, Marion Etevenard, Jean-Pascal Kily and Martin Garet*
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2019-07-23 Research Article
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