目的采用经典热习服训练方法复合缺氧训练以探索提升机体耐热能力的有效方法。方法在温度33℃以上、湿度大于70%的湿热条件下,以2018年某部队60名经严格筛查的男性健康志愿者为对象,进行为期12 d的热习服训练和测试。60名志愿者分为3组...目的采用经典热习服训练方法复合缺氧训练以探索提升机体耐热能力的有效方法。方法在温度33℃以上、湿度大于70%的湿热条件下,以2018年某部队60名经严格筛查的男性健康志愿者为对象,进行为期12 d的热习服训练和测试。60名志愿者分为3组,分别为对照组、热习服组和缺氧训练复合热习服组,每组20名。采集热习服前后耳温、心率、出汗量、心肺功能、综合感受评分、生理紧张指数(physiological strain index,PSI)、最大摄氧量(maximal oxygen uptake, VO2max)、心率为170次/min时的体力工作能力(physical work capacity at heart rate of 170 beats per minute, PWC170)进行耐热能力的评估。结果与对照组相比,热习服组以及缺氧复合热习服组基础耳温、耐热测试后的耳温均显著下降(P<0.05),基础心率以及耐热测试后的心率均显著下降(P<0.05);PSI与呼吸频率也显著降低(P<0.05);出汗量、VO2max、PWC170、最大心输出量、氧耗量/最大心率、最大二氧化碳排出量、最大肺通气量均显著增加(P<0.05)。缺氧复合热习服组在耐热测试后的心率与耳温均低于热习服组(P<0.05),并且PSI与呼吸频率也出现显著降低(P<0.05)。与热习服组相比,缺氧复合热习服组的出汗量、VO2max、PWC170、最大心输出量、氧耗量/最大心率、最大二氧化碳排出量、最大肺通气量均显著增加(P<0.05)。结论在经典热习服训练基础上增加耐缺氧训练,能更有效地促进热习服的形成。展开更多
This paper reports the effects of two trainings-5 km cross-country race and 15 min heat-bath on theimprovement of heat-tolerance. All subjects of the training group were asked to perform a training once daily for 10to...This paper reports the effects of two trainings-5 km cross-country race and 15 min heat-bath on theimprovement of heat-tolerance. All subjects of the training group were asked to perform a training once daily for 10to 12 d within two weeks. The results proved that the cross-country race training both in the artificial hot chamberand on the drill ground of troop could obtain evident training-adaptation. The rectal temperature, heart rate, andsweat volume reduced by 0. 39℃, 13. 2 b/min and 338 g during training in field, respectively. In the same period ofcross-country race training, the normal military exercises, labours and natural heat acclimatization in the summercould only raise slightly the level of heat acclimatization in soldiers. Heat-bath training could reduce rectal temperature by 0. 6℃ during immersion in hot water, however, the level of heat-tolerance in a hot climatic chamber was inferior to that attained by cross-country race, march and running training.展开更多
in order to verify the heat-tolerance effect, two trainings, 90 min marching with load (WBGT 24. 6～35.6℃) and 10 km running (WBGT 25.0～31.1℃) were performed in laboratory and field under hot climate.Ten to twelve ...in order to verify the heat-tolerance effect, two trainings, 90 min marching with load (WBGT 24. 6～35.6℃) and 10 km running (WBGT 25.0～31.1℃) were performed in laboratory and field under hot climate.Ten to twelve times (days) of training were carried out 展开更多
in order to improve the acquired level of heat acclimatization (HA) by training, on the basis of singlemode march training (SMT) or single-mode cross-country race training (SCT) , combined training method of march and...in order to improve the acquired level of heat acclimatization (HA) by training, on the basis of singlemode march training (SMT) or single-mode cross-country race training (SCT) , combined training method of march and cross-country race in the heat was adopted in this experiment ,and the effect of the training on heat tolerance was analyzed. Eight young males were asked to perform a simulated SMT and SCT for 90 min on a treadmill in a hot climate chamber (Td 32. 7℃ , WBGT 28. 4℃ ) once daily for 10 to 12 d within two weeks. The results showed that rectal temperature (Tr) was reduced by 0. 61℃ , heart rate (Hr) by 8. 5 b/min,sweat volume (SV)by 0. 220 kg, physiological strain index (PSI)by 0. 620,systolic pressure (SP)and diastolic pressure (DP) had a little change, pulse pressure (PP) and stroke volume (StV) increased , and cardiac output (CO) decreased a little at the middle stage and increased at the late stage due to Hr change. The standardized bicycle ergometer test (SBE test) in the heat (Td 37℃)has proved that these physiological indexes post-training had significant improvements ,as compared with those pre-training, suggesting that the combined training could raise heat-tolerance and was superior to the SMT in improving acquired heat acclimatization in same training duration and times , and to the SCT in regulating body temperature and cardiovascular function and in prolonging heat tolerance duration.展开更多
背景高温环境下持续有氧运动可增加中暑和受伤的风险,预降温成为研究热点。目的系统评价预降温对高温环境下体能训练者生理指标与运动效能的影响,为军事体能训练预降温策略的制定提供依据。方法采用主题词与自由词检索相组合的方式,在Pu...背景高温环境下持续有氧运动可增加中暑和受伤的风险,预降温成为研究热点。目的系统评价预降温对高温环境下体能训练者生理指标与运动效能的影响,为军事体能训练预降温策略的制定提供依据。方法采用主题词与自由词检索相组合的方式,在PubMed、The Cochrane Library、Elsevier、Embase、Web of Science、Scopus、中国知网(CNKI)、中国生物医学文献数据库(CBM)、万方数据库等中英文数据库中检索文献,根据纳入和排除标准筛选文献、提取数据,并采用PEDro量表完成文献质量评价。运用Stata16.0软件对数据进行Meta分析。结果最终纳入15篇英文文献、2篇中文文献,质量评分为6.2±0.4。共纳入333例研究对象,男性238例、女性95例,15项研究显示年龄为20~32.6岁、1项年龄为18~35岁、1项未提及年龄,均为无热习服的长期运动人员。预降温与无降温运动后心率值比较的异质性检验I2=0(P=0.794),Meta分析结果显示合并效用量MD=-0.25(95%CI:-0.44~-0.07)(Z=-2.662,P=0.008),提示预降温减缓运动后心率升高;预降温与无降温核心体温变化值比较的异质性检验I2=75.2%(P<0.001),Meta分析结果显示合并效用量MD=-1.27(95%CI:-1.85~-0.69)(Z=-4.278,P<0.001),提示预降温对减缓核心体温升高速度有效;预降温与无降温热感觉值比较的异质性检验I2=52.3%(P=0.040),Meta分析结果显示合并效用量-0.31(95%CI:-0.80~0.18)(Z=-1.233,P=0.217),表明预降温对运动后热感觉值无显著影响;预降温与无降温出汗率比较的异质性检验结果显示I2=71.0%(P<0.001),Meta分析结果显示合并效用量MD=-0.48(95%CI:-0.95~0)(Z=-1.971,P=0.049),表明预降温对降低运动出汗率影响显著。纳入研究的原始数据显示除3项研究未对运动效能进行评估、1项研究提示预降温差异不明显,其余研究均显示预降温措施对运动效能有促进作用。结论预降温对提高运动成绩与效果、减缓体温升高速率、降低�展开更多
文摘目的采用经典热习服训练方法复合缺氧训练以探索提升机体耐热能力的有效方法。方法在温度33℃以上、湿度大于70%的湿热条件下,以2018年某部队60名经严格筛查的男性健康志愿者为对象,进行为期12 d的热习服训练和测试。60名志愿者分为3组,分别为对照组、热习服组和缺氧训练复合热习服组,每组20名。采集热习服前后耳温、心率、出汗量、心肺功能、综合感受评分、生理紧张指数(physiological strain index,PSI)、最大摄氧量(maximal oxygen uptake, VO2max)、心率为170次/min时的体力工作能力(physical work capacity at heart rate of 170 beats per minute, PWC170)进行耐热能力的评估。结果与对照组相比,热习服组以及缺氧复合热习服组基础耳温、耐热测试后的耳温均显著下降(P<0.05),基础心率以及耐热测试后的心率均显著下降(P<0.05);PSI与呼吸频率也显著降低(P<0.05);出汗量、VO2max、PWC170、最大心输出量、氧耗量/最大心率、最大二氧化碳排出量、最大肺通气量均显著增加(P<0.05)。缺氧复合热习服组在耐热测试后的心率与耳温均低于热习服组(P<0.05),并且PSI与呼吸频率也出现显著降低(P<0.05)。与热习服组相比,缺氧复合热习服组的出汗量、VO2max、PWC170、最大心输出量、氧耗量/最大心率、最大二氧化碳排出量、最大肺通气量均显著增加(P<0.05)。结论在经典热习服训练基础上增加耐缺氧训练,能更有效地促进热习服的形成。
文摘This paper reports the effects of two trainings-5 km cross-country race and 15 min heat-bath on theimprovement of heat-tolerance. All subjects of the training group were asked to perform a training once daily for 10to 12 d within two weeks. The results proved that the cross-country race training both in the artificial hot chamberand on the drill ground of troop could obtain evident training-adaptation. The rectal temperature, heart rate, andsweat volume reduced by 0. 39℃, 13. 2 b/min and 338 g during training in field, respectively. In the same period ofcross-country race training, the normal military exercises, labours and natural heat acclimatization in the summercould only raise slightly the level of heat acclimatization in soldiers. Heat-bath training could reduce rectal temperature by 0. 6℃ during immersion in hot water, however, the level of heat-tolerance in a hot climatic chamber was inferior to that attained by cross-country race, march and running training.
文摘in order to verify the heat-tolerance effect, two trainings, 90 min marching with load (WBGT 24. 6～35.6℃) and 10 km running (WBGT 25.0～31.1℃) were performed in laboratory and field under hot climate.Ten to twelve times (days) of training were carried out
文摘in order to improve the acquired level of heat acclimatization (HA) by training, on the basis of singlemode march training (SMT) or single-mode cross-country race training (SCT) , combined training method of march and cross-country race in the heat was adopted in this experiment ,and the effect of the training on heat tolerance was analyzed. Eight young males were asked to perform a simulated SMT and SCT for 90 min on a treadmill in a hot climate chamber (Td 32. 7℃ , WBGT 28. 4℃ ) once daily for 10 to 12 d within two weeks. The results showed that rectal temperature (Tr) was reduced by 0. 61℃ , heart rate (Hr) by 8. 5 b/min,sweat volume (SV)by 0. 220 kg, physiological strain index (PSI)by 0. 620,systolic pressure (SP)and diastolic pressure (DP) had a little change, pulse pressure (PP) and stroke volume (StV) increased , and cardiac output (CO) decreased a little at the middle stage and increased at the late stage due to Hr change. The standardized bicycle ergometer test (SBE test) in the heat (Td 37℃)has proved that these physiological indexes post-training had significant improvements ,as compared with those pre-training, suggesting that the combined training could raise heat-tolerance and was superior to the SMT in improving acquired heat acclimatization in same training duration and times , and to the SCT in regulating body temperature and cardiovascular function and in prolonging heat tolerance duration.
文摘背景高温环境下持续有氧运动可增加中暑和受伤的风险,预降温成为研究热点。目的系统评价预降温对高温环境下体能训练者生理指标与运动效能的影响,为军事体能训练预降温策略的制定提供依据。方法采用主题词与自由词检索相组合的方式,在PubMed、The Cochrane Library、Elsevier、Embase、Web of Science、Scopus、中国知网(CNKI)、中国生物医学文献数据库(CBM)、万方数据库等中英文数据库中检索文献,根据纳入和排除标准筛选文献、提取数据,并采用PEDro量表完成文献质量评价。运用Stata16.0软件对数据进行Meta分析。结果最终纳入15篇英文文献、2篇中文文献,质量评分为6.2±0.4。共纳入333例研究对象,男性238例、女性95例,15项研究显示年龄为20~32.6岁、1项年龄为18~35岁、1项未提及年龄,均为无热习服的长期运动人员。预降温与无降温运动后心率值比较的异质性检验I2=0(P=0.794),Meta分析结果显示合并效用量MD=-0.25(95%CI:-0.44~-0.07)(Z=-2.662,P=0.008),提示预降温减缓运动后心率升高;预降温与无降温核心体温变化值比较的异质性检验I2=75.2%(P<0.001),Meta分析结果显示合并效用量MD=-1.27(95%CI:-1.85~-0.69)(Z=-4.278,P<0.001),提示预降温对减缓核心体温升高速度有效;预降温与无降温热感觉值比较的异质性检验I2=52.3%(P=0.040),Meta分析结果显示合并效用量-0.31(95%CI:-0.80~0.18)(Z=-1.233,P=0.217),表明预降温对运动后热感觉值无显著影响;预降温与无降温出汗率比较的异质性检验结果显示I2=71.0%(P<0.001),Meta分析结果显示合并效用量MD=-0.48(95%CI:-0.95~0)(Z=-1.971,P=0.049),表明预降温对降低运动出汗率影响显著。纳入研究的原始数据显示除3项研究未对运动效能进行评估、1项研究提示预降温差异不明显,其余研究均显示预降温措施对运动效能有促进作用。结论预降温对提高运动成绩与效果、减缓体温升高速率、降低�
