Effects of different protocols of hydration on cardiorespiratory parameters during exercise and recovery

International Archives of Medicine

Celso Ferreira³  Luiz Carlos de Abreu¹  Carlos Marcelo Pastre⁴  Luiz Carlos Marques Vanderlei⁴  Isadora Lessa Moreno²  Franciele Marques Vanderlei² 

[1] Department of Physiotherapy, ABC Faculty of Medicine – FMABC, São Paulo, SP, Brazil;Doctoral student in Medicine (Cardiology), Federal University of São Paulo – UNIFESP, São Paulo, SP, Brazil;Department of Medicine (Cardiology), Federal University of São Paulo – UNIFESP, Rua Napoleão de Barros, 715 - Térreo, São Paulo, SP, Brazil;Department of Physiotherapy, Paulista State University – FCT/UNESP, Presidente Prudente, SP, Brazil

关键词: Respiratory rate;    Blood pressure;    Heart rate;    Rehydration solutions;    Aerobic exercise;   

Others  :  803036
DOI  :  10.1186/1755-7682-6-33

 received in 2013-04-30, accepted in 2013-08-19,  发布年份 2013

【 摘 要 】

Introduction

Hydration plays a key role in the physiological maintenance required by exercise.

Objective

To evaluate the behavior of heart rate (HR), systolic (SBP) and diastolic (DBP) blood pressure, pulse oxygen saturation (SpO₂) and respiratory rate (RR) of young people during and after prolonged physical exercise, with and without the intake of water or isotonic solution.

Method

31 young individuals (21.63 ± 1.86 years) were subjected to a four-step protocol with a 48-hour interval between each step, namely: i) a test to determine the incremental load used in subsequent steps, ii) a control protocol without hydration (CP), iii) an experimental protocol with water intake (PE1), iv) an experimental protocol with ingestion of isotonic (PE2). The protocols consisted of 10 min rest, 90 min of exercise on a treadmill at 60% of VO₂peak and 60 min of recovery. The parameters HR, SBP, DBP, RR and SPO₂ were measured at rest, at 30, 60 and 90 min of exercise, with the exception of RR; and at 1, 3, 5, 7, 10, 20, 30, 40, 50 and 60 min of recovery. The two-factor analysis of variance for repeated measures model was used for analysis (p<0.05).

Results

There was a moment effect for all variables in exercise (p<0.001), however, no effect was observed between the protocols (SBP, p=0.998; DBP, p=0.897; SpO₂, p=0.077, HR=0.281) and in the interaction moment and protocol (SBP, p=0.058; DBP, p=0.191 and SpO₂, p=0.510, HR=0.496). In recovery there was also a moment effect for all variables analyzed (p<0.001). There was no effect among protocols for SBP (p=0.986), DBP (p=0.536) and RR (p=0.539), however in the SpO₂ (p=0.001) and HR (p=0.033) variables, effects were observed between the protocols. Regarding the moment and protocol interaction, an effect was observed for HR (SBP, p=0.431; DBP, p=0.086; SpO₂, p=0.445, RR, p=0.147, HR, p=0.022).

Conclusion

For the type of exercise performed, both the water and the isotonic solution influenced the behavior of cardiorespiratory parameters, and independent of the type of hydration given the behavior of the parameters studied was similar.

【 授权许可】

   
2013 Vanderlei et al.; licensee BioMed Central Ltd.

【 图 表 】

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