Formulation of regression equation on the basis of endurance time and fatigue indices in biceps brachii by using surface-EMG of 14-19 years aged trained male volleyball players

Chatterjee, Priyam; Nandy, Priya; Bandyopadhyay, Anupam

doi:10.22271/kheljournal.2021.v8.i6a.2270

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…Surface EMG (sEMG), which captures the complex motor unit potential produced by the superimposition of several muscle fibers known as the Muscular action potential, can be a useful tool for studying various tasks [17] . The sEMG signal's amplitude and its frequency domain characteristics affect how the signal is measured [18][19][20][21][22] . Henneman's size principle [8] , which specifies the link between features of motor neurons and the muscle fibers they innervate and so regulate, are together called motor units.…”

Section: Discussionmentioning

confidence: 99%

A linear regression between maximum voluntary contraction and motor unit activity of respiratory muscles during forceful and normal respiration of male athletes using surface electromyography

Nandy¹,

Chatterjee²,

Bandyopadhyay³

2023

Int. J. Phys. Educ. Sports Health

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The primary objective of this study is to establish a relationship between maximum voluntary contraction (MVC) and motor unit activity (RMS) during forced and normal respiration. Fifty-nine male athletes between the ages of 15-20 years participated. During forceful and regular respiration surface electromyography (sEMG) was performed on participants' external intercostal, diaphragm, and latissimus dorsi muscles. The raw sEMG recordings were filtered to compute MVC and RMS. Pearson's correlation test revealed a substantial positive association between MVC and RMS for all muscles (p<0.05). A simple linear regression model was used to establish the best feasible equation based on correlation. MVC shows interconnection with RMS during both respiration in both groups, indicating variations in motor unit activity during respiration may contribute to a muscle's maximum ability to generate force. In these situations, 'y=b+mx' can be used to quantitatively express the link between MVC and RMS.

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Section: Discussionmentioning

confidence: 99%

A linear regression between maximum voluntary contraction and motor unit activity of respiratory muscles during forceful and normal respiration of male athletes using surface electromyography

Nandy¹,

Chatterjee²,

Bandyopadhyay³

2023

Int. J. Phys. Educ. Sports Health

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Motor units involvement in diaphragm and intercostal muscles during supine and prone posture, and its relationship with oxygen saturation and perfusion index in healthy young female adults

Saba,

Chatterjee,

Bandyopadhyay

2023

IJPP

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Objectives: Due to gravity and non-gravity variables, human posture influences the distribution of ventilation and perfusion. Gravity enhances the air exchange and posture has an impact on the respiratory muscles’ activity. The goal of the study was to determine the role of neuromuscular activities in respiratory muscles throughout various respiratory states and postures, as well as the degree to which two different lying positions affected the perfusion index (PI) and oxygen saturation (SpO2) level in young, healthy female adults. Materials and Methods: Thirty sedentary healthy female college students, age ranges from 18 to 25 years having no history of pulmonary or neuromuscular diseases voluntarily cooperated and participated in this study. Each participant’s diaphragm and intercostal muscles underwent surface electromyography in the supine and prone postures. The heart rate (HR), SpO2, and PI were measured. Results: When in the supine position, the diaphragm and intercostal muscles both had greater mean root mean square and maximum voluntary contraction values, which is statistically significant (P < 0.05). However, HR, SpO2 level, and PI between supine and prone postures show negligible changes. Conclusion: According to this study, prone posture is advantageous to supine posture since it requires less motor unit activation for proper breathing. Contrarily, the increases in chest cavity capacity are insufficient for the healthy adult female’s calm breathing to result in an increase in SpO2 and PI.

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Motor unit involvement of diaphragm and intercostal muscles in eupneatachypnea and bradypnea of young female sedentary adults

Saha,

Pathak,

Chatterjee

et al. 2023

Prog Health Sci

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Purpose: The involvement of motor units duringtheir activities in primary and secondary musclesrapidly becomes prominent as a diagnostic tool forpathological conditions. But no research has beenpublished so far indicating the involvement of motorunits during physiological circumstances likeEupnea, Bradypnea, and Tachypnea. These findingswould help to determine the neuromuscularmechanism of respiratory mechanics inphysiological situations and to compare it withclinical conditions related to respiratory muscles.Aim of the study: The experimental findings wouldhelp to determine the neuromuscular mechanism ofrespiratory mechanics in physiological situationsand to compare it with clinical conditions related torespiratory muscles.Materials and methods: Thirty healthy sedentaryadult females participated in this investigation. TheTachypnea and Bradypnea were deliberatelyachieved by asking them to hyperventilate withshallow breaths and to hold their breath for a periodin a supine posture accordingly. The participation ofmotor units and force generated in the diaphragmand intercostal muscles were assessed by surfaceelectromyography (sEMG).Results: The motor unit activities for three varioussituations such as silent breathing reduced breathing,and fast breathing rates significantly vary with eachother in both the primary respiratory muscles(p<0.05). But there was insignificant variation inmotor unit discharges between Eupnea andbradypnea of both muscles.Conclusions: In supine posture during Tachypnea,the quick and enhanced expansion of the thoraciccavity requires more motor unit activation in thediaphragm and intercostal muscle thus suggestinghigher involvement. In Eupnea and Bradypneavirtually equal participation of both muscles wasdiscovered. The modest increase in intercostal motorunit discharge in bradypnea than Eupnea might beowing to the larger extension of the intercostalmuscle during bradypnea than the diaphragm does.

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Formulation of regression equation on the basis of endurance time and fatigue indices in biceps brachii by using surface-EMG of 14-19 years aged trained male volleyball players

Cited by 3 publications

References 8 publications

A linear regression between maximum voluntary contraction and motor unit activity of respiratory muscles during forceful and normal respiration of male athletes using surface electromyography

A linear regression between maximum voluntary contraction and motor unit activity of respiratory muscles during forceful and normal respiration of male athletes using surface electromyography

Motor units involvement in diaphragm and intercostal muscles during supine and prone posture, and its relationship with oxygen saturation and perfusion index in healthy young female adults

Motor unit involvement of diaphragm and intercostal muscles in eupneatachypnea and bradypnea of young female sedentary adults

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