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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Morphological Changes in the Motor Endplate and in the Belly Muscle Induced by Previous Static Stretching to the Climbing Protocol

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Author(s):
Barbosa, Gabriela K. [1] ; Jacob, Carolina dos S. [1] ; Rodrigues, Mariana P. [1] ; Rocha, Lara C. [1] ; Pimentel Neto, Jurandyr [1] ; Ciena, Adriano P. [1]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Biosci IB, Dept Phys Act, Lab Morphol & Phys Act LAMAF, BR-13506900 Rio Claro, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Microscopy and Microanalysis; v. 27, n. 5, p. 1183-1191, OCT 2021.
Web of Science Citations: 0
Abstract

Static stretching provides benefits to the range of motion, modulates intramuscular connective tissue, and is incorporated into warm-up exercises. In this study, we present the effects in the motor endplate and belly muscle resulting from previous static stretching to climbing training. Twenty-four adult male Wistar rats were divided into four groups (n = 6 each): Sedentary (Sed), Climbing (Clb), Static stretching (Ss), and Static stretching prior to climbing (Ssc). The animals (Clb, Ss, and Ssc groups) were subjected to a training protocol 3x/week for 8 weeks, and the Ssc group was subjected to the Ss and Clb protocols in the same session. Samples from the animals were processed for immunostaining, histochemistry, and light microscopy. The Clb group presented a higher motor endplate; the Ss group presented no changes in the motor endplate; and the Ssc group demonstrated a higher compactness. We concluded that static stretching prior to the climbing protocol maintained the density of the motor endplate and increased the compactness of the neuromuscular junction structure. Also, there was a reduction in the myofibers' diameter (Type I and Ha), an increase in myofibrillar densities (Type I and IIx, and total), and the reorganization of the myonuclei and the interstitium. (AU)

FAPESP's process: 17/12525-1 - Plasticity at the myotendinous junction of adult rats subjected to stretching, associated with hypertrophy and swimming training: morphological, molecular and functional analyzes, with new perspectives about sarcomerogenesis
Grantee:Adriano Polican Ciena
Support Opportunities: Regular Research Grants