Cardiorespiratory effects of water ingestion during and after exercise

International Archives of Medicine

Celso Ferreira²  Luiz Carlos de Abreu¹  Franciele Marques Vanderlei²  Carlos Marcelo Pastre³  Luiz Carlos Marques Vanderlei³  Isadora Lessa Moreno² 

[1] Laboratory of Scientific Writing, School of Medicine of ABC, Santo André, SP, Brazil;Department of Medicine, Cardiology Division, UNIFESP - Federal University of São Paulo, São Paulo, SP, Brazil;Department of Physical Therapy, UNESP – State University Paulista, Presidente Prudente, SP, Brazil

关键词: Cardiovascular System;    Aerobic exercise;    Blood pressure;    Heart rate;    Hydration;   

Others  :  803009
DOI  :  10.1186/1755-7682-6-35

 received in 2013-04-26, accepted in 2013-09-18,  发布年份 2013

【 摘 要 】

Background

In prolonged exercise, the state of hypohydration due to sweating raises physiological stress and induces a drop in sports performance. However, the impact of water intake in cardiorespiratory parameters when administered during and after physical activity has not been well studied. This study aimed to analyze the effects of water intake in heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), partial oxygen saturation (SpO₂) and respiratory rate during and after prolonged exercise.

Methods

Thirty-one young males (21.55 ± 1.89 yr) performed three different protocols (48 h interval between each stage): I) maximal exercise test to determine the load for the protocols; II) Control protocol (CP) and; III) Experimental protocol (EP). The protocols consisted of 10 min at rest with the subject in the supine position, 90 min of treadmill exercise (60% of VO₂ peak) and 60 min of rest placed in the dorsal decubitus position. No rehydration beverage consumption was allowed during CP. During EP, however, the subjects were given water (Vittalev, Spaipa, Brazil). The parameters HR, SBP, DBP, SpO₂ and respiratory rate were measured at the end of the rest, in 30, 60 and 90 minutes of the activity, except the respiratory rate parameter, and at 1, 3, 5, 7, 10, 20, 30, 40, 50 and 60 minute post- exercise.

Results

The hydration protocol provided minimal changes in SBP and DBP and a smaller increase in HR and did not significantly affect SpO₂ during exercise and better HR recovery, faster return of SBP and DBP and a better performance for SpO₂ and respiratory rate post-exercise.

Conclusion

Hydration with water influenced the behavior of cardiorespiratory parameters in healthy young subjects.

【 授权许可】

   
2013 Moreno et al.; licensee BioMed Central Ltd.

【 图 表 】

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