Cardiac-autonomic and hemodynamic responses to a hypertonic, sugar-sweetened sports beverage in physically active men
Cardiac-autonomic and hemodynamic responses to a hypertonic, sugar-sweetened sports beverage in physically active men
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DOI：
10.1139/apnm-2021-0138
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发表时间：
2021-10-01
影响因子：
3.4
通讯作者：
Flatt, Andrew A.
中科院分区：
文献类型：
--
作者：
Christiani, Mark;Grosicki, Gregory J.;Flatt, Andrew A.
当在训练前收集心率变异性（HRV）测量值时，水化练习可能会混淆心率变异性（HRV）测量值。我们的目的是确定高渗，含糖运动饮料对心率变异性和血液动力学参数的影响，在体力活动的年轻男子。15例受试者在禁食过夜后的不同日期以随机顺序摄入591 mL佳得乐（6%碳水化合物，类似于330 mOsmol/kg）、591 mL水或10 mL水（对照）。在饮酒前5 min（T1）和饮酒后5-10 min（T2）、25-30 min（T3）、40-45 min（T4）和55-60 min（T5）的时间窗内评估HRV和血流动力学。与T1组相比，饮水后各时间点连续差值的均方根和正常RR间期的标准差均增加（P < 0.05）。在服用Gatorade后没有观察到增加，尽管在T2和T3观察到小的效应量（P > 0.05，ES = 0.27-0.32）。体循环血管阻力在给他力后T2和饮水后T2、T3均显著增加（P < 0.05）。未观察到血压测量、每搏输出量或心输出量的相互作用。佳得乐不能像水一样引起心血管调节。医生应等待至少45分钟后记录心率变异性摄入佳得乐和>60分钟后的水摄入量。新奇：相同体积的冷水和佳得乐产生不相等的心脏自主神经和血流动力学反应。观察到更大的幅度和持续时间的HRV反应后摄入的水比佳得乐。未能解释最近的液体摄入量可能会导致自主神经状态的误解。
Hydration practices may confound heart rate variability (HRV) measurements when collected in the pre-training period. We aimed to determine the effects of ingesting a hypertonic, sugar-sweetened sports beverage on HRV and hemodynamic parameters in physically active young men. Fifteen subjects consumed 591 mL of Gatorade (6% carbohydrate, similar to 330 mOsmol/kg), 591 mL water, or 10 mL water (control) in random order on separate days following overnight fasting. HRV and hemodynamics were evaluated in 5-min windows immediately before (T1) and 5-10 min (T2), 25-30 min (T3), 40-45 min (T4), and 55-60 min (T5) post-drinking. Root-mean square of successive differences and the standard deviation of normal RR intervals increased post-water intake at all time-points relative to Tl (P < 0.05). No increases were observed post-Gatorade intake, though small effect sizes were noted at T2 and T3 (P > 0.05, ES = 0.27-0.32). Systemic vascular resistance increased at T2 post-Gatorade intake and at T2 and T3 post-water intake (P < 0.05). No interactions were observed for blood pressure measures, stroke volume, or cardiac output. Gatorade does not evoke cardiovascular adjustments to the same magnitude as water. Practitioners should wait at least 45 min to record HRV post-Gatorade intake and >60 min post-water intake.Novelty:Equal volumes of cold water and Gatorade produce inequivalent cardiac-autonomic and hemodynamic responses.HRV responses of greater amplitude and duration were observed following intake of water versus Gatorade.Failure to account for recent fluid intake may result in misinterpretation of autonomic status.