Jornal Vascular Brasileiro
https://app.periodikos.com.br/journal/jvb/article/doi/10.1590/1677-5449.20240152
Jornal Vascular Brasileiro
Artigo Original

The impact of resistance training on heart rate variability parameters in physically active young adults

Impacto de uma rotina de treinamento de força nos parâmetros da variabilidade da frequência cardíaca em jovens fisicamente ativos

Gabriel Marcelino Barbosa; Helyel Rodrigues Gobbo; Lucas Cezar de Oliveira; Anderson Pontes Morales; Gustavo Vieira de Oliveira

http://dx.doi.org/10.1590/1677-5449.20240152 J Vasc Bras, vol.24, e20240150, 2025
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Abstract

Background: Heart rate variability (HRV) parameters are an important indicator of cardiovascular health. While it has been well established that aerobic exercise improves HRV, the effects of resistance training on HRV remain less explored.

Objectives: To compare the impact of a resistance training routine on HRV parameters in physically active young adults.

Methods: This observational study included 24 participants, 12 who underwent resistance training and a control group of 12 who underwent moderate-intensity exercise. HRV was assessed during a 15-minute resting period in the supine position with a Polar RS800CX heart rate monitor. The analysis encompassed time-domain metrics (root mean square of successive differences between adjacent normal R-R intervals [RMSSD] and the standard deviation of normal-to-normal R-R intervals [SDNN]), frequency-domain metrics (high-frequency and low-frequency indices, both expressed in normalized units, and the low-frequency/ high-frequency ratio), and non-linear metrics (SD of the Poincaré plot width [SD1] and the SD of the Poincaré plot length [SD2]). HRV parameters were processed in Kubios HRV. Statistical analysis included unpaired t-tests, with significance set at p < 0.05.

Results: The resistance-trained group demonstrated significantly higher RMSSD (75.3 [SD, 28.5] ms) and SDNN (65.8 [SD, 23.1] ms) values than the untrained group (RMSSD: 37.5 [SD, 19.6] ms; SDNN: 40.2 [SD, 14.2] ms; p < 0.01). SD1 and SD2 were also significantly higher in the resistance training group than the control group, reflecting greater parasympathetic activity.

Conclusions: Long-term resistance training was associated with improved parasympathetic modulation, indicating potential cardiovascular benefits and enhanced autonomic function.

Keywords

resistance training, heart rate, cardiovascular disease, exercise, sedentary behavior

Resumo

Contexto: A variabilidade da frequência cardíaca (VFC) é um importante indicador de saúde cardiovascular. Embora os efeitos dos exercícios aeróbicos na melhora da VFC sejam bem estabelecidos, o impacto do treinamento de resistência (TR) sobre esses parâmetros ainda é pouco explorado.

Objetivos: Comparar o impacto da rotina de TR nos parâmetros da VFC em jovens fisicamente ativos.

Métodos: Estudo observacional com 24 participantes, sendo 12 indivíduos treinados em resistência e 12 não treinados. A VFC foi avaliada durante 15 minutos de repouso em posição supina, utilizando o monitor de frequência cardíaca Polar RS800CX®. A análise contemplou métricas no domínio do tempo (raiz quadrada média das diferenças sucessivas entre intervalos R-R normais adjacentes [RMSSD] e desvio-padrão dos intervalos R-R normais [SDNN]), no domínio da frequência (índices de alta frequência [HF] e baixa frequência [LF], ambos em unidades normalizadas [nu], e a razão LF/HF) e métricas não lineares (desvio-padrão da largura [SD1] e do comprimento [SD2] do gráfico de Poincaré). Os dados foram processados no software Kubios® HRV. A análise estatística foi realizada por meio de testes t não pareados, com nível de significância de p < 0,05.

Resultados: O grupo treinado apresentou valores significativamente maiores de RMSSD (75,3±28,5 ms) e SDNN (65,8±23,1 ms) em comparação ao grupo não treinado (RMSSD: 37,5±19,6 ms; SDNN: 40,2±14,2 ms; p < 0,01). Os valores de SD1 e o SD2 também foram significativamente superiores nos indivíduos treinados, indicando maior atividade parassimpática.

Conclusões: O TR a longo prazo está associado à melhora da modulação parassimpática, sugerindo benefícios cardiovasculares e uma função autonômica aprimorada.

Palavras-chave

treinamento de força, frequência cardíaca, doença cardiovascular, exercício físico, comportamento sedentário

Referências

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Submetido em:
17/11/2024

Aceito em:
10/03/2025

Sociedade Brasileira de Angiologia e Cirurgia Vascular (SBACV)"> Sociedade Brasileira de Angiologia e Cirurgia Vascular (SBACV)">
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