{"title":"Maximal physiological responses to deep water running at thermoneutral temperature.","authors":"Y Nakanishi, T Kimura, Y Yokoo","doi":"10.2114/jpa.18.31","DOIUrl":null,"url":null,"abstract":"<p><p>This study investigated the metabolic demands of deep water running (DWR) compared with those of treadmill running (TMR) while the water and ambient temperatures were kept under thermoneutral condition. Two maximal tests, one on treadmill and the other running in deep water using the Wet Vest (Lincoln life jacket) were undertaken by twenty healthy non-smoker males (Age = 28.0 +/- 9.2 years). The order of trials was counterbalanced with half of the subjects completing the treadmill first and the rest completing the water running first. Oxygen consumption (VO2), ventilation, heart rate (HR), respiratory exchange ratio (RQ), ratings of perceived exertion (RPE) and blood lactate were measured. VO2max (2.68 vs 3.40 ml/kg/min), HRmax (171.5 vs 190.8 beats/min), maximal minute ventilation (98.5 vs 113.31/min), and peak blood lactate value (10.44 vs 12.47 mmol/l) in response to DWR were significantly lower than those of TMR in the thermoneutral conditions. The lower VO2max and HRmax values of DWR compared to those of TMR are shown to be attributed to the hydrostatic effects caused by water and different muscle recruitment patterns between DWR and TMR.</p>","PeriodicalId":79317,"journal":{"name":"Applied human science : journal of physiological anthropology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2114/jpa.18.31","citationCount":"63","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied human science : journal of physiological anthropology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2114/jpa.18.31","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 63
Abstract
This study investigated the metabolic demands of deep water running (DWR) compared with those of treadmill running (TMR) while the water and ambient temperatures were kept under thermoneutral condition. Two maximal tests, one on treadmill and the other running in deep water using the Wet Vest (Lincoln life jacket) were undertaken by twenty healthy non-smoker males (Age = 28.0 +/- 9.2 years). The order of trials was counterbalanced with half of the subjects completing the treadmill first and the rest completing the water running first. Oxygen consumption (VO2), ventilation, heart rate (HR), respiratory exchange ratio (RQ), ratings of perceived exertion (RPE) and blood lactate were measured. VO2max (2.68 vs 3.40 ml/kg/min), HRmax (171.5 vs 190.8 beats/min), maximal minute ventilation (98.5 vs 113.31/min), and peak blood lactate value (10.44 vs 12.47 mmol/l) in response to DWR were significantly lower than those of TMR in the thermoneutral conditions. The lower VO2max and HRmax values of DWR compared to those of TMR are shown to be attributed to the hydrostatic effects caused by water and different muscle recruitment patterns between DWR and TMR.
在水和环境温度保持热中性的条件下,研究了深水跑步(DWR)和跑步机跑步(TMR)的代谢需求。20名健康的非吸烟男性(年龄= 28.0±9.2岁)进行了两项最大测试,一项是在跑步机上进行的,另一项是在深水中穿着Wet Vest(林肯救生衣)进行的。试验的顺序是平衡的,一半的受试者先完成跑步机,其余的受试者先完成水跑。测量耗氧量(VO2)、通气量、心率(HR)、呼吸交换比(RQ)、感觉劳累评分(RPE)和血乳酸。DWR对VO2max (2.68 vs 3.40 ml/kg/min)、HRmax (171.5 vs 190.8次/min)、最大分钟通气量(98.5 vs 113.31/min)和血乳酸峰值(10.44 vs 12.47 mmol/l)均显著低于TMR在热中性条件下的反应。与TMR相比,DWR的VO2max和HRmax值较低,这是由于水引起的流体静力效应以及DWR和TMR之间不同的肌肉募集模式。