Morphological Adjustments of the Radial Nerve Are Intensity-Dependent

Carbone, Patrícia Oliva; Neto, Walter Krause; Gama, Eliane Florêncio; Silva, Wellington de Assis; Nobre, Thatiana Lacerda; Caperuto, Érico Chagas; Mascaro, Marcelo Betti; Souza, Romeu Rodrigues de

doi:10.1590/1517-869220172301157903

Cited by 7 publications

(15 citation statements)

References 28 publications

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“…Nineteen articles published data about the maximum load‐carrying tests protocol (Antonio‐Santos et al., 2016; Carbone et al., 2017; Chi et al., 2020; Deus et al., 2012; Domingos et al., 2012; Gil & Kim, 2015; Gomes, Borges, Rossi, Moura, & Medeiros, 2017; Grans et al., 2014; Hornberger & Farrar, 2004; Kwon et al, 2018; Lim et al, 2018; Mônico‐Neto et al, 2015; Neves et al, 2019; Padilha et al, 2017; Padilha et al., 2019; Perrilhão et al, 2019; Prestes et al, 2009; Souza et al., 2014; Souza et al, 2017). LRT presented a positive effect on the maximum load‐carrying capacity (16 studies, SMD 12.37, 95% CI [9.36, 15.37], p < .00001, I 2 = 90%, Figure 11).…”

Section: Resultsmentioning

confidence: 99%

“…(2012) demonstrated that the LRT, without any additional load, is already sufficient to increase the load‐carrying capacity by the rodent, having its function enhanced by increasing the training load. In addition, morphological adjustments to peripheral nerves may explain, in part, the increase in muscle strength without necessarily increasing the size of the muscle or its fibers (Carbone et al., 2017).…”

Section: Discussionmentioning

confidence: 99%

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Muscle hypertrophy and ladder‐based resistance training for rodents: A systematic review and meta‐analysis

et al. 2020

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This study aimed to review the effects of ladder‐based resistance training (LRT) on muscle hypertrophy and strength in rodents through a systematic review with meta‐analysis. We systematically searched PubMed/Medline, SportDiscuss, Scopus, Google Scholar, Science Direct, and Scielo database on May 18, 2020. Thirty‐four studies were included measuring total (mCSA) or mean muscle fibers cross‐sectional area (fCSA) or maximum load‐carrying capacity (MLCC) or muscle mass (MM). About the main results, LRT provides sufficient mechanical stimulation to increase mCSA and fCSA. Meta‐analysis showed a significant overall effect on the fCSA (SMD 1.89, 95% CI [1.18, 2.61], p < .00001, I2 = 85%); however, subgroup analysis showed that some muscle types might not be hypertrophied through the LRT. Meta‐analysis showed a significant training effect on the MM (SMD 0.92, 95% CI [0.52, 1.32], p < .00001, I2 = 72%). Sub‐group analysis revealed that soleus (SMD 1.32, 95% CI [0.11, 2.54], p = .03, I2 = 86%) and FHL (SMD 1.92, 95% CI [1.00, 2.85], p < .0001, I2 = 71%) presented significant training effects, despite moderate heterogeneity levels (I2 = 72%). MLCC increases considerably after a period of LRT, regardless of its duration and the characteristics of the protocols (SMD 12.37, 95% CI [9.36, 15.37], p < .00001, I2 = 90%). Through these results, we reach the following conclusions: (a) LRT is efficient to induce muscle hypertrophy, although this effect varies between different types of skeletal muscles, and; (b) the ability of rodents to carry load increases regardless of the type and duration of the protocol used.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Muscle hypertrophy and ladder‐based resistance training for rodents: A systematic review and meta‐analysis

et al. 2020

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“…4 In addition to body pressure applied on hands, it's believed wrist position affects both ulnar and middle nerves. 12,13,14 An extended wrist posture may directly contribute to nervous tension. 12 Studies shown wrist greatest extension was verified when cyclist has lowest hand position, which could exacerbate potential for nerve damage.…”

Section: Methodsmentioning

confidence: 99%

“…12,13,14 An extended wrist posture may directly contribute to nervous tension. 12 Studies shown wrist greatest extension was verified when cyclist has lowest hand position, which could exacerbate potential for nerve damage. 4 Using a glove with upholstery can reduce the maximum pressure applied in hypothenar region by 10-20%.…”

Section: Methodsmentioning

confidence: 99%

Postural Comparison Between a Conventional Bicycle Handlebar and an Elliptical Handlebar

Rodrigues

Serra

Liporaci

et al. 2019

Rev Bras Med Esporte

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Introduction: Cycling has been encouraged, not only as a way to reduce environmental pollution but also to improve people's health. For many, the bicycle is their sole form of transportation. In view of this growth, and potential risk of injury due to excessive bicycle use, an elliptical handlebar was developed with the purpose of modifying the hand and forearm grip and improving the rider's posture. Objective: To compare vertebral spine angulations with the use of conventional and elliptical handlebars. Methods: Twenty-six individuals participated in this study, in which they pedaled for two minutes with elliptical handlebars and two minutes with conventional handlebars, in order to compare the angulation of the vertebral spine using each type of handlebars. The images were filmed and evaluated by the Kinovea kinematic evaluation program. The statistical analysis was performed by Graphpad Prism 7. Results: It was observed that 88% of the participants had a more upright vertebral spine angulation when using the elliptical handlebar, with statistically significant difference (p = 0.0001). Conclusion: Bearing in mind that the handlebars were placed in similar support positions, it was observed, based on the quantified data, that the posture is more upright, and therefore more suitable, when using the elliptical handlebars. Level of Evidence II; Diagnostic Studies -Investigating a Diagnostic Test.

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“…After an incision, a fragment of ~0.5 cm in length from the tibial nerve was removed from the posterior portion of the right leg. Then, we fixed the nerve fragment in 2.5% glutaraldehyde solution in phosphate buffer (0.2 M, pH 7.3) for 3 h (Pianca et al, 2015 ; Carbone et al, 2017 ; Krause Neto et al, 2017b ). Subsequently, we washed the material three times with the same buffer solution for 5 min at a time.…”

Section: Methodsmentioning

confidence: 99%

Aging Induces Changes in the Somatic Nerve and Postsynaptic Component without Any Alterations in Skeletal Muscles Morphology and Capacity to Carry Load of Wistar Rats

et al. 2017

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The present study aimed to analyze the morphology of the peripheral nerve, postsynaptic compartment, skeletal muscles and weight-bearing capacity of Wistar rats at specific ages. Twenty rats were divided into groups: 10 months-old (ADULT) and 24 months-old (OLD). After euthanasia, we prepared and analyzed the tibial nerve using transmission electron microscopy and the soleus and plantaris muscles for cytofluorescence and histochemistry. For the comparison of the results between groups we used dependent and independent Student's t-test with level of significance set at p ≤ 0.05. For the tibial nerve, the OLD group presented the following alterations compared to the ADULT group: larger area and diameter of both myelinated fibers and axons, smaller area occupied by myelinated and unmyelinated axons, lower numerical density of myelinated fibers, and fewer myelinated fibers with normal morphology. Both aged soleus and plantaris end-plate showed greater total perimeter, stained perimeter, total area and stained area compared to ADULT group (p < 0.05). Yet, aged soleus end-plate presented greater dispersion than ADULT samples (p < 0.05). For the morphology of soleus and plantaris muscles, density of the interstitial volume was greater in the OLD group (p < 0.05). No statistical difference was found between groups in the weight-bearing tests. The results of the present study demonstrated that the aging process induces changes in the peripheral nerve and postsynaptic compartment without any change in skeletal muscles and ability to carry load in Wistar rats.

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Morphological Adjustments of the Radial Nerve Are Intensity-Dependent

Cited by 7 publications

References 28 publications

Muscle hypertrophy and ladder‐based resistance training for rodents: A systematic review and meta‐analysis

Muscle hypertrophy and ladder‐based resistance training for rodents: A systematic review and meta‐analysis

Postural Comparison Between a Conventional Bicycle Handlebar and an Elliptical Handlebar

Aging Induces Changes in the Somatic Nerve and Postsynaptic Component without Any Alterations in Skeletal Muscles Morphology and Capacity to Carry Load of Wistar Rats

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