Endurance and fatigue caused by local muscular performance in skilled athletes

Popova, Tatiana; Koryukalov, Yu. I.; Kourova, Olga

doi:10.1134/s0362119715060079

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…The research results suggested that changes in the heart function occurred during local work due to increased activity of central regulatory influences. Many authors also tend to view fatigue caused by local work in terms of central mechanisms [9,11]. The research [12] also revealed increased slow-wave activity throughout the cortex as fatigue set in, within theta-and alpha-1and-2-ranges.…”

Section: Discussionmentioning

confidence: 99%

“…The subjects were to do a local load test by lifting a load of 1/3 of the "average" weight, their heartbeat rates being 60 to 70 bpm until they stated they were unable to continue the test, and a static load test by holding a load of 1/3 of the maximum weight at a prescribed level until fatigue set in (that is, until they made a verbal statement that they were unable to hold the weight anymore). The conditions in question provided average load for all the age groups [9]. Load measurements were taken by means of a Mosso's ergograph.…”

Section: Methodsmentioning

confidence: 99%

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Loads on small muscle groups as a risk of hypertensive conditions

Kourova¹,

Koryukalov²,

Popova³

2017

Russ Open Med J

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Background -Hypertension is a widespread condition nowadays. Changes in physical activity patterns of the population, namely, sedentary lifestyle and increased loads on small muscle groups, are the key factors behind the development of hypertension. Although science has amassed sufficient amounts of facts about a hypertensive effect of local loads, the very mechanisms underlying adaptive reactions of the circulatory system have not received comprehensive study. Material and Methods -We studied adaptive reactions to local muscle work in 108 adult subjects groups aged between 18 and 20, 30 and 35, and 60 and 74 respectively by means of a Mosso's ergograph until the onset of fatigue with all the three age groups receiving medium loads. We have analyzed their work performance, including static and dynamic stamina. We took blood pressure measurements, electrocardiograms (ECGs) and electroencephalograms (EEGs) before and after the test. Results -We discovered increased heartbeat rates, systolic blood pressure, and diastolic blood pressure in all of the subjects, as they were doing local load tests, while their ECGs showed shortened electric diastole time, which was indicative of heart functional tension, especially in the subjects aged between 18 and, and 60 and 74. Adverse heart reactions were more pronounced while the subjects were doing static tests rather than dynamic tests, and their EEGs showed increased slow-wave activity within alpha-and theta-ranges, with regularly recurrent alpha wave synchronizations. Conclusion -Our research shows that central mechanisms underlie hypertensive reactions of the cardiovascular system to local loads with the participation of metabolic receptors of muscles. We have also justified the necessity of preventive campaigns against hypertensions in individuals receiving increased amounts of local muscle work in the motor mode.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Loads on small muscle groups as a risk of hypertensive conditions

Kourova¹,

Koryukalov²,

Popova³

2017

Russ Open Med J

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“…Popova T V and other scholars conducted EEG tests on athletes aged 18 to 23 and unhealthy subjects, and found that athletes' endurance parameters were higher in dynamic performance and static tension than those in unsuitable subjects, and their fatigue ability was lower, which was consistent with the bioelectrical changes recorded in EEG. 5 Steding ehrenborg K and other scholars conducted MRI examination on the hearts of athletes and healthy people, and found that the heart rate of athletes was 70 ± 1%, which was lower than that of normal heart rate, and the expenditure of cardiac blood kinetic energy of heart beat was higher. 6 Oliveira GL D's team analyzed the incidence of eating disorder precursor syndrome and dissatisfaction with body image of 101 athletes in different sports events, and estimated body density and fat percentage using Siri equation.…”

Section: Related Workmentioning

confidence: 98%

The Strategy of Physiological Arousal of Athletes in Sports Competition Based on Drug Intervention

Chen

2021

Rev Bras Med Esporte

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Generally speaking, the physiological index of the human body is in a relatively stable state, which refers to the function of various organ systems with the characteristics of high-tide period, low-tide period and critical period. However, for competitive athletes, it is necessary to maintain physiological activation in both training and competition. In view of this, this study will analyze the physiological arousal degree of aspirin and acetaminophen in order to provide a reference for athletes to take analgesic drugs. In this study, the analytic hierarchy process (AHP), principal component analysis and factor analysis, were used to construct a scientific evaluation system of physiological arousal level, and the medication and non-medication status of 90 athletes were evaluated. The results showed that aspirin was better than acetaminophen in blood urea and serum creatine kinase, and the comprehensive score of some athletes was higher than 0.95. Aspirin is better in arousing athletes’ physiology. The research results will provide scientific guidance for athletes to take antipyretic and analgesic drugs.

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“…Psychophysiological studies of fatigue that occur after physical exercise show a correlation with a number of EEG parameters, as well as a significant difference in the dynamics of such parameters among professional athletes and beginners. Popova [20], in the experiments with kick-boxers on Mosso ergograph, showed that professional athletes are characterized by a significantly greater pronounced alpha rhythm compared with the control group (non-athletes). The authors associate these results with less development of fatigue in athletes.…”

Section: Introductionmentioning

confidence: 99%

Individual Features in the Typology of the Nervous System and the Brain Activity Dynamics of Freestyle Wrestlers Exposed to a Strong Physical Activity (a Pilot Study)

Leonov

Isaev

Liutsko

2020

Behavioral Sciences

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Nowadays, knowledge of psychophysiological features, particularly on the nervous system’s characteristics, is essential in the sporting context, particularly for freestyle wrestling. The study aimed to investigate the peculiarities of the wrestlers’ nervous system—on the individual and electrophysiological levels in two functional states—in calm wakefulness and during intense physical fatigue. Psychological (Well-being, Activity, Mood; Spielberger–Hanin; Leonhard’s questionnaires), as well as electrophysiological techniques (dynamics of the dominant and average frequencies of the main electroencephalogram (EEG) spectra—theta, alpha, low and high-frequency beta rhythms), were used in the study. It was shown that athletes were mainly characterized by the hyperthymic type of character accentuation and a low frequency of theta rhythm in a calm wakefulness state. After the acute physical load, wrestlers with high hyperthymia showed a moderate increase in theta, whereas other athletes showed a decrease in this parameter. Regardless of the level of hyperthymic accentuation, all wrestlers were characterized by an increase in the frequency of alpha rhythm after exercises in the left hemisphere. These results suggest the existence of a particular functional system in freestyle wrestlers, which allows the body’s regulatory systems to be adapted for the effective implementation of sports activity.

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Endurance and fatigue caused by local muscular performance in skilled athletes

Cited by 3 publications

References 7 publications

Loads on small muscle groups as a risk of hypertensive conditions

Loads on small muscle groups as a risk of hypertensive conditions

The Strategy of Physiological Arousal of Athletes in Sports Competition Based on Drug Intervention

Individual Features in the Typology of the Nervous System and the Brain Activity Dynamics of Freestyle Wrestlers Exposed to a Strong Physical Activity (a Pilot Study)

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