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Association between body mass index and regulation of the cardiovascular system in medical students. A pilot study.

Asociación entre el índice de masa corporal y la regulación del sistema cardiovascular en estudiantes de medicina. Un estudio piloto Association between body mass index and regulation of the cardiovascular system in medical students. A pilot study




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Alvarado Aravena, C. ., Castillo Aguilar, M. ., Retamal Matus, H. F. ., Estrada Goic, C. ., & Núñez Espinosa, C. . (2020). Association between body mass index and regulation of the cardiovascular system in medical students. A pilot study.: Association between body mass index and regulation of the cardiovascular system in medical students. A pilot study. Archivos De Medicina , 21(2). https://doi.org/10.30554/archmed.21.2.4005.2021
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Alvarado Aravena, C. ., Castillo Aguilar, M. ., Retamal Matus, H. F. ., Estrada Goic, C. ., & Núñez Espinosa, C. . (2020). Association between body mass index and regulation of the cardiovascular system in medical students. A pilot study.: Association between body mass index and regulation of the cardiovascular system in medical students. A pilot study. Archivos De Medicina , 21(2). https://doi.org/10.30554/archmed.21.2.4005.2021

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Caren Alvarado Aravena
Matías Castillo Aguilar
Héctor Felipe Retamal Matus
Claudia Estrada Goic
Cristian Núñez Espinosa

Caren Alvarado Aravena,

Estudiante de la Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile. 


Matías Castillo Aguilar,

Estudiante del Departamento de Kinesiología, Universidad de Magallanes, Punta Arenas, Chile. 


Héctor Felipe Retamal Matus,

PhD © Fisioterapia, Académico del Departamento de Kinesiología, Universidad de Magallanes, Punta Arenas, Chile.


Claudia Estrada Goic,

PhD Ciencias Psicológicas, Académico del Departamento de Psicología, Universidad de Magallanes, Punta Arenas, Chile. 


Cristian Núñez Espinosa,

PhD Fisiología, Académico de la Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile. Research Network on Aging. ORCID: 


Objective: This study had the purpose of knowing the association of the body mass index and cardiovascular regulation of medical students. Materials and methods: a cross-sectional study with a randomized design. The sample consisted of 54 medical students (21,2 ± 1,6 years) who were evaluated and classified according to the body mass index: Normal weight (NP; BMI <25 kg / m2); Overweight (SP; BMI≥ 25 kg / m2); Obese (OB; BMI ≥ 30 Kg / m2). Anthropometric measurements, blood pressure, and heart rate variability (HRV) were the variables evaluated. Results: 51,9% of the students are overweight or obese. The body mass index was negatively correlated with the heart rate variability parameter, especially when compared with the HRV time domains (p <0.001). Differences were also observed in cardiac autonomic control when comparing the study groups in LnRMSSD (p <0,01) and LnSDNN (p <0,01). Conclusion: medical students with a higher body mass index are associated with less cardiac autonomic control and less parasympathetic action in the regulation of the cardiovascular system.

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