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Morphology of extensor digitorum longus of Wistar rats after remobilization by vibratory platform

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Izabela Rodrigues Camilo I. R., Maria Luiza Serradourada Wutzke M. L. S., Rose Meire Costa R. M., Gladson Ricardo Flor Bertolini G. R. F., Lucinéia de Fátima Chasko Ribeiro L.
European Journal of Clinical and Experimental Medicine
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2019
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issue 4
295-300
EN
Introduction. In exercise, vibrations are performed in order to produce rapid and short changes in muscle length. These changes are detected by sensory receptors, in response try to dampen the vibratory waves through a modulation of muscle stiffness. However, its effects on the morphology of muscle tissue are still not fully established, especially after long periods of immobilization. Aim. To compare the effects of the vibratory platform on the remobilization of the extensor digitorum longus (EDL) muscle of Wistar rats with free remobilization. Material and methods. 20 rats were divided into: CG (Control), IG (immobilized), IFG (immobilization and free remobilization), IPG (immobilization and remobilization with vibratory platform). The immobilization was performed on the pelvic limb for 15 days. The remobilization with vibratory platform was done for 10 minutes daily, for 2 weeks. The EDL was processed for histological analysis of cross-sections. Results. The area, larger diameter, smaller diameter and fiber density of the EDL muscle of GI presented significant alteration when opposed to CG, IFG and IPG. The density of nuclei of the EDL muscle of IG presented a significant increase when opposed to the others, and IPG also presented a significant increase when compared to CG. Conclusion. The morphology and morphometry of the EDL muscle tissue were affected, and both free and vibration platform remobilization re-established the morphological aspects of the muscle fiber, without significant differences between the methods.
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Low-level laser therapy on the rat’s gastrocnemius morphometry submitted to a rheumatoid arthritis model

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Marin E., Fuse J. L., Lopes L. P., Neves M., da Silva Leal T. S., de Fátima Chasko Ribeiro L., Bertolini G. R. F.
European Journal of Clinical and Experimental Medicine
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2021
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issue 2
111-115
EN
Introduction. Rheumatoid arthritis (RA) is a chronic, systemic, autoimmune inflammatory disease of unknown origin, mainly affecting synovial joints and related structures, including the adjacent musculature, generating great disability and reduction in quality of life. Aim. This study was designed to investigate the effect of low-level laser therapy (LLLT) on gastrocnemius of Wistar rats subjected to an experimental model of RA. Material and methods. Forty male Wistar rats were used, separated into: acute and chronic, being subdivided into Control Group (CG): without intervention, Lesion Group (LG): submitted to lesion, Laser Control Group (LCG): without lesion and with treatment, and Laser Lesion Group (LLG): submitted to lesion and LLLT. The treatment with LLLT occurred in four points of the right knee, wavelength of 660 nm, energy density of 5 J/cm², energy per point of 0.003 J. Morphometric analysis was performed using a 40x magnification photomicrograph and analyzed using the Image-Pro-Plus 6.0 program. Results. As result of the acute group there was a difference only for muscle mass, being higher in CG. For the chronic group there was significant difference for cross-sectional area, larger and smaller diameter, again with the control group obtaining higher values than the others, for the number of nuclei LG was lower than CG and LCG, but LLG was not different from any of them. Conclusion. It is concluded that treatment with LLLT was not very effective in reversing the harmful effects of RA on the gastrocnemius muscle.
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POZIOM SPRAWNOŚCI FIZYCZNEJ A WYBRANE ELEMENTY SKŁADU CIAŁA UCZESTNIKÓW UNIWERSYTETU III WIEKU

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Nowosielska–Swadźba D., Zwolińska D., Kunicki M.
Eunomia – Rozwój Zrównoważony – Sustainable Development
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2020
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issue 1(98)
105-116
EN
Objective of the work: Assessment of physical fitness of participants of the University of the Third Age in Racibórz on the basis of selected Senior Fitness Test samples. Test person and the methods: 15 participants were recruited for the study, including 11 women and 4 men students of the University of the Third Age. Get the results of the service quality assessment using selected samples from the Fullerton test and proposed body features. The average age of surveyed users is 69 years, the youngest participant was 63 years, the oldest 79 years. Results: 1. Among the respondents, there were people with sarcopenia features. 2. There was no correlation between sarcopenia and physical fitness. 3. The lack of a relationship between MS (skeletal muscle mass) and SMI (skeletal muscle mass index) and endurance and strength of lower limbs may suggest that factors other than skeletal muscle mass may be associated with a decrease in physical fitness in the elderly.
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