The indices of the cardiovascular system in workers with different body weights in unfavourable working conditions

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Abstract

Introduction. The cardiovascular system is an integral indicator of the body’s adaptive responses.

Goal is a comparative analysis of the function of the cardiovascular system (CVS) in persons with different nutritional status, working on a rotational basis.

Materials and methods. Two groups of healthy men were observed: those with normal nutritional status (NNS, n = 14) and those with increased body weight (IBW, n = 13). Working conditions were evaluated according to the degree of harmfulness and danger. The examination was carried out twice: before the start and after 2 months. after shift work. Systolic and diastolic blood pressure, heart rate (HR) were measured. The Robinson index, endurance coefficient, vegetative Kerdo index, and circulatory efficiency coefficient were calculated.

Results. Working conditions were characterized by work at night in an open area, irregularity of shifts, unregulated breaks for rest, the influence of noise and vibration. In the initial state, body weight in NNS individuals was 74.1±1.1 kg versus 91.8±2.7 kg (p=0.001) in IBW persons; HR – 60.0±2.3 versus 73.1±2.0 (p=0.001). After shift work, body weight decreased by 22.2% and 50.0% in persons in the comparison groups. Integral indicators indicated a more negative response of the cardiovascular system to working conditions in IBW people: less resistance to stress (eurance coefficient), lower performance (efficiency ratio of blood circulation), a higher level of hemodynamic load (Robinson index), in NNS people there were dominated by parasympathetic influences, 33.3% of IBW persons had sympathetic influences.

Limitations. Healthy males working on a rotational basis, with a normal nutritional status and with overweight and obesity.

Conclusion. Overweight and obesity negatively affect the cardiovascular system, reducing the functional reserves of the body. Under unfavourable working conditions, the changes are also more pronounced than in the group of people with a normal nutritional status.

Compliance with ethical standards. The work was carried out in accordance with the conclusion of the Ethics Committee of the Volga Research Medical University of the Ministry of Health of Russia, protocol No. 4 dated March 14, 2022.

Patient consent. Each participant of the study (or his/her legal representative) gave informed voluntary written consent to participate in the study and publish personal medical information in an impersonal form in the journal "Gigiena i Sanitariya (Hygiene and Sanitation, Russian journal)".

Conribuiton:
Rakhmanov R.S. — the concept and design of the study, writing the text, responsibility for the integrity of all parts of the article;
Istomin A.A. — editing, approval of the final version of the article;
Bogomolova E.S. — collection of literature data, editing the final version of the article, responsibility for the integrity of all parts of the article;
Narutdinov D.A. — collection and systematization, statistical processing of the material;
Razgulin S.A. — participation in the interpretation of the results, preparation of the text of the article;
Kalyuzhny E.A. — participation in the statistical processing of the material. 

Conflict of interest. The authors declare no conflict of interest.

Acknowledgement. The study had no sponsorship.

Received: July 24, 2022 / Accepted: December 8, 2022 / Published: March 25, 2023

About the authors

Rofail S. Rakhmanov

Volga Research Medical University of the Ministry of Health of Russia

Author for correspondence.
Email: raf53@mail.ru
ORCID iD: 0000-0003-1531-5518

MD, PhD, DSci., Professor of the Department of Hygiene, Privolzhsky Research Medical University, Ministry of Health of Russia).

e-mail: raf53@mail.ru 

Russian Federation

Aleksandr V. Istomin

Federal Scientific Center of Hygiene named after F.F. Erisman of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing

Email: noemail@neicon.ru
ORCID iD: 0000-0001-7150-225X
Russian Federation

Elena S. Bogomolova

Volga Research Medical University of the Ministry of Health of Russia

Email: noemail@neicon.ru
ORCID iD: 0000-0002-1573-3667
Russian Federation

Denis A. Narutdinov

Volga Research Medical University of the Ministry of Health of Russia

Email: noemail@neicon.ru
ORCID iD: 0000-0002-5438-8755
Russian Federation

Sergey A. Razgulin

Volga Research Medical University of the Ministry of Health of Russia

Email: noemail@neicon.ru
ORCID iD: 0000-0001-8356-2970
Russian Federation

Evgeny A. Kalyuzhny

Volga Research Medical University of the Ministry of Health of Russia

Email: noemail@neicon.ru
ORCID iD: 0000-0002-0792-1190
Russian Federation

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