UDC

612.766+611.81

DOI

10.37482/2687-1491-Z261

Authors

Yury I. Koryukalov* ORCID: https://orcid.org/0000-0002-4897-2613
Tatiana V. Popova* ORCID: https://orcid.org/0000-0002-5060-8132
Olga G. Kourova* ORCID: https://orcid.org/0000-0003-2337-3531
*South Ural State University (National Research University) (Chelyabinsk, Russia)

Corresponding author: Tatiana Popova, address: prosp. Lenina 76, Chelyabinsk, 454080, Russia; e-mail: tvpopova@susu.ru

Abstract

Numerous publications about the adverse effects of prolonged local muscle work on the musculoskeletal system and blood circulation point out a risk of serious health problems in individuals whose work involves local muscle load. One of the reasons behind the low efficiency of the current preventive measures is the lack of concrete scientific data on the central mechanisms of fatiguing local muscle work. The purpose of the study was to investigate changes in the electroencephalographic parameters during neuronal synchronization at prolonged local muscle work and fatigue in healthy men aged between 21 and 29 years, taking into account their physical and mental fitness. Materials and methods. The research was conducted at the Sport Science Laboratory and Psychophysical Safety Laboratory, Research Centre, South Ural State University, in 2023–2024. The study involved apparently healthy men aged 21 to 29 years (mean age 24 ± 3 years). The subjects were divided into three groups: athletes doing acyclic sports using local loads (kickboxing and boxing) (n = 16), students and postgraduate students regularly doing relaxation practice (n = 23) and students and postgraduates doing neither sports nor relaxation exercises (control; n = 21). The relaxation group initially received training from an experienced instructor and continued to practice the techniques independently while listening to audio recordings. EEG alpha synchronization was studied during fatiguing local loads using a hand ergograph. All measurements were performed during intersession and between competitions. Results. Changes in EEG parameters were identified, indicating a weakening of synchronization processes and an increase in the level of functional stress in all subjects during local load; especially pronounced changes were observed in the control group. Although the athletes recovered from the local load faster than the controls, relaxation was also found to normalize EEG synchronization parameters and lead to increased performance during prolonged local muscle work. Thus, relaxation is an effective as well as more affordable and less time-consuming, compared to sports, way of influencing the functional state of the central nervous system and can be recommended as a preventive measure against the development of occupational diseases in people whose work involves local muscle load.

Keywords

alpha synchronization, relaxation, local muscle activity, functional stress, occupational disease prevention, functional state correction, fatigue due to muscle work

References

1. Latyshevskaya N.I., Alborova M.A., Davydenko L.A., Filatov B.N. Working Conditions and Prevalence of Musculoskeletal Pain in Metalworking Machine Operators. Meditsina truda i promyshlennaya ekologiya, 2022, vol. 62, no. 1, pp. 53–58 (in Russ.). https://doi.org/10.31089/1026-9428-2022-62-1-53-58
2. Podchufarova E.V. Lumbosacral Pain: Delivery of Care to Patients in the United Kingdom. Neurol. Neuropsychiatry Psychosom., 2014, vol. 6, no. 2, pp. 75–80 (in Russ.). https://doi.org/10.14412/2074-2711-2014-2-75-80
3. Chernikova E.F., Troshin V.V., Nekrasova M.M., Zuev A.V. Professional Conditioning of the Formation of Diseases of the Musculoskeletal System in Traffic Police Inspectors. Meditsina truda i promyshlennaya ekologiya, 2019, vol. 1, no. 10, pp. 899–904 (in Russ.). https://doi.org/10.31089/1026-9428-2019-59-10-899-904
4. Sherstyuk S.A., Aseeva A.Yu., Sherstyuk M.A. Novye aspekty otsenki adaptatsii k fizicheskim nagruzkam: fiziologicheski sportivnoe serdtse i transmitral’nyy krovotok v usloviyakh aerobno-anaerobnogo metabolizma myshechnoy deyatel’nosti [New Aspects of Assessment of Adaptation to Physical Exertion: Athlete’s Heart and Transmitral Blood Flow in the Conditions of Aerobic-Anaerobic Metabolism of Muscle Activity]. Mezhdunarodnyy nauchno-issledovatel’skiy zhurnal, 2020, no. 8-2, pp. 80–86. https://doi.org/10.23670/IRJ.2020.98.8.048
5. Alhumaid W., Small S.D., Kirkham A.A., Becher H., Pituskin E., Prado C.M., Thompson R.B., Haykowsky M.J., Paterson D.I. A Contemporary Review of the Effects of Exercise Training on Cardiac Structure and Function and Cardiovascular Risk Profile: Insights from Imaging. Front. Cardiovasc. Med., 2022, vol. 9. Art. no. 753652. https://doi.org/10.3389/fcvm.2022.753652
6. Montero D., Roche E., Martinez-Rodriguez A. The Impact of Aerobic Exercise Training on Arterial Stiffness in Pre- and Hypertensive Subjects: A Systematic Review and Meta-Analysis. Int. J. Cardiol., 2014, vol. 173, no. 3, pp. 361–368. https://doi.org/10.1016/j.ijcard.2014.03.072
7. Brouwer N.P., Kingma I., van Dijk W., van Dieën J.H. Can Intermittent Changes in Trunk Extensor Muscle Length Delay Muscle Fatigue Development? J. Biomech., 2024, vol. 162. Art. no. 111881. https://doi.org/10.1016/j.jbiomech.2023.111881
8. Choi H.-M., Stebbins C.L., Lee O.-T., Nho H., Lee J.-H., Chun J.-M., Kim K.-A., Kim J.-K. Augmentation of the Exercise Pressor Reflex in Prehypertension: Roles of the Muscle Metaboreflex and Mechanoreflex. Appl. Physiol. Nutr. Metab., 2013, vol. 38, no. 2, pp. 209–215. https://doi.org/10.1139/apnm-2012-0143
9. Bosch T., de Looze M.P., van Dieën J.H. Development of Fatigue and Discomfort in the Upper Trapezius Muscle During Light Manual Work. Ergonomics, 2007, vol. 50, no. 2, pp. 161–177. https://doi.org/10.1080/00140130600900282
10. Rivera-Oliver M., Moreno E., Álvarez-Bagnarol Y., Ayala-Santiago C., Cruz-Reyes N., Molina-Castro G.C., Clemens S., Canela E.I., Ferré S., Casadó V., Díaz-Ríos M. Adenosine A1-Dopamine D1 Receptor Heteromers Control the Excitability of the Spinal Motoneuron. Mol. Neurobiol., 2019, vol. 56, no. 2, pp. 797–811. https://doi.org/10.1007/s12035-018-1120-y
11. Chelnokov A.A., Roshchina L.V., Gladchenko D.A., Pivovarova E.A., Piskunov I.V., Gorodnichev R.M. The Effect of Transcutaneous Electrical Spinal Cord Stimulation on the Functional Activity of Spinal Inhibition in the System of Synergistic Muscles of the Lower Leg in Humans. Hum. Physiol., 2022, vol. 48, no. 2, pp. 121–133. https://doi.org/10.1134/S0362119722020037
12. Kourova O.G., Popova T.V., Koryukalov Y.I. Body Response to Local Muscular Performance of Individuals Engaged in Various Professional Occupations. Occup. Dis. Environ. Med., 2014, vol. 2, no. 3, pp. 71–75. https://doi.org/10.4236/odem.2014.23008
13. Livanov M.N., Khrizman T.P. Prostranstvenno-vremennaya organizatsiya biopotentsialov mozga u cheloveka [Spatio-Temporal Organization of Human Cerebral Biopotentials]. Smirnov A.A. et al. (eds.). Estestvennonauchnye osnovy psikhologii [Natural-Scientific Foundations of Psychology]. Moscow, 1978, pp. 206-233.
14. Li H., Yao R., Xia X., Yin G., Deng H., Yang P. Adjustment of Synchronization Stability of Dynamic Brain-Networks Based on Feature Fusion. Front. Hum. Neurosci., 2019, vol. 13. Art. no. 98. https://doi.org/10.3389/fnhum.2019.00098
15. Mannan M.M.N., Jeong M.Y., Kamran M.A. Hybrid ICA – Regression: Automatic Identification and Removal of Ocular Artifacts from Electroencephalographic Signals. Front. Hum. Neurosci., 2016, vol. 10. Art. no. 193. https://doi.org/10.3389/fnhum.2016.00193
16. Popova T., Koryukalov Yu., Erlikh V., Kourova O. Neurophysiological Analysis of Adaptation Processes Rhythmicity in Athletes and Subjects Who Practice Relaxation: Experimental Study. Med. Sport, 2020, vol. 73, no. 4, pp. 610–625. https://doi.org/10.23736/S0025-7826.20.03414-6
17. Popova T.V., Koryukalov Yu.I., Morokko D.A. Central Mechanisms of Fatigue During Local Static Muscular Activity. Hum. Physiol., 2007, vol. 33, no. 4, pp. 467–472. https://doi.org/10.1134/S0362119707040135
18. Baranov V.M., Baevskiy R.M., Berseneva A.P., Mikhaylov V.M. Otsenka adaptatsionnykh vozmozhnostey organizma i zadachi povysheniya effektivnosti zdravookhraneniya [Evaluation of Adaptive Abilities of an Organism and Tasks of Healthcare Effectiveness Increase]. Ekologiya cheloveka, 2004, no. 6, pp. 25–29.
19. Dick O.E., Svyatogor I.A., Reznikova T.N., Fedoryaka D.A., Nozdrachev A.D. Analysis of EEG Patterns in Subjects with Panic Attacks. Hum. Physiol., 2020, vol. 46, no. 2, pp. 163–174. https://doi.org/10.1134/S0362119720010065
20. Alonge P., Gadaleta G., Urbano G., Lupica A., Di Stefano V., Brighina F., Torrente A. The Role of Brain Plasticity in Neuromuscular Disorders: Current Knowledge and Future Prospects. Brain Sci., 2024, vol. 14, no. 10. Art. no. 971. https://doi.org/10.3390/brainsci14100971
21. Meeusen R., Watson P., Hasegawa H., Roelands B., Piacentini M.F. Central Fatigue: The Serotonin Hypothesis and Beyond. Sports Med., 2006, vol. 36, no. 10, pp. 881–909. https://doi.org/10.2165/00007256-200636100-00006
22. Orel V.R., Tambovtseva R.V., Shitya A.A., Gatsunaev A.N. Izmeneniya pokazateley tsentral’noy gemodinamiki i sosudistoy nagruzki serdtsa u luchnikov pri modelirovanii natyazheniya luka [Central Hemodynamic and Vascular Resistances in the Archers in the Simulation of the Draw]. Vestnik novykh meditsinskikh tekhnologiy, 2015, vol. 22, no. 3, pp. 102–107.
23. Grimak L.P. Psikhologiya aktivnosti cheloveka: psikhologicheskie mekhanizmy i priemy samoregulyatsii [Psychology of Human Activity: Psychological Mechanisms and Techniques of Self-Regulation]. Moscow, 2010. 366 p.
24. Rozhkov V.P., Trifonov M.I., Soroko S.I. Otrazhenie protsessa sozrevaniya TsNS u detey i podrostkov severnogo regiona RF v dinamike integral’nykh parametrov EEG [CNS Development in Children and Adolescents of the Russian Federation Northern Region and Its Reflection in the Dynamics of Integral EEG Parameters]. Zhurnal vysshey nervnoy deyatel’nosti, 2021, vol. 71, no. 4, pp. 529–546. https://doi.org/10.31857/S0044467721040067
25. Warfield E., Esposito P., Braun-Trocchio R. Differences in Relaxation and Imagery Among NCAA Division I Sport Types. Sports (Basel), 2023, vol. 11, no. 11. Art. no. 224. https://doi.org/10.3390/sports11110224
26. Doletskiy A.N., Khvastunova I.V., Akhundova R.E., Migulina A.A. Neyrofiziologicheskie mekhanizmy realizatsii nemedikamentoznoy relaksatsii [Neurophysiological Mechanisms of Relaxation]. Vestnik Volgogradskogo gosudarstvennogo meditsinskogo universiteta, 2013, no. 1, pp. 114–118.