共查询到16条相似文献，搜索用时 515 毫秒
1.
目的：评估大强度的无氧间歇练习、有氧耐力练习及其组合练习的次序对恢复期心脏自主神经功能的影响。方法：采用随机交互设计，15名健康男性受试者分别完成4次运动：600 m间歇跑练习、30 min大强度持续跑练习、600 m间歇跑加30 min大强度持续跑练习，30 min大强度持续跑加600 m间歇跑练习，分别在运动前（0~10 min）、整个运动期间和运动后恢复期（0~20 min）记录RR间期，并进行相应HRV分析以及在运动前和运动后即刻进行血乳酸测试。结果：与安静状态相比，运动中HR、EPOC和TRIMP均显著增加，但组合练习次序间不存在显著差异；恢复期20 min内，HR随恢复时间增加逐渐降低，但同一恢复阶段不同运动方案之间无显著差异；RMSSD、SDNN、SDNN/HR、HF和LF变化相似，在整个恢复阶段均显著低于安静值，但HF和LF在恢复期（15~20 min）显著增加；而LF/HF随着恢复时间延长显著增加。结论：大强度的无氧间歇练习、持续有氧练习及其组合练习，在运动后早期恢复阶段（0~20 min）HRV变化趋于一致，提示耐力运动后心脏自主神经功能的调整可能不具有运动形式依赖性。此外，大强度无氧间歇和有氧耐力练习的组合练习次序不影响运动后恢复期心脏自主功能的调节，恢复期20 min内，交感活性仍处于较高水平。 相似文献
2.
目的：探究单次中等强度运动对注意缺陷多动障碍(attention deficit hyperactivity disorder,ADHD)儿童问题行为和心率变异性(heart rate variability,HRV)的影响。方法：采用SNAP-IV量表测量13名ADHD儿童[男生10名,女生3名;(9.00±1.15)岁]完成1次20 min中等强度运动(挥拍运动、台阶测试、折返跑、开合跳)前、后的问题行为;采用芬兰心电图测试仪(Mega Faros 180)监测运动前、后以及运动期间HRV指标,并将运动前、后以及运动期间全程30 min均分为6个时段(t0～t5),分析不同时段HRV的变化特征以及时段差异。结果：1)运动后,ADHD儿童注意力不集中、多动冲动、对立违抗得分非常显著低于运动前(P<0.01);2)运动后,RMSSD、SDNN、HF、LF、TP显著低于运动前(P<0.05),LF/HF较运动前有上升趋势;3)运动期间时域指标RMSSD、SDNN时段差异显著,呈持续下降趋势(P<0.01),频域指标LF、TP、... 相似文献
3.
目的:探究女子运动员力竭运动后脑电信号(EEG)与心率变异性(HRV)的变化,阐明其与运动性疲劳之间的关系。方法:随机选取19名女大学生运动员为实验对象,用布鲁斯(Bruce)运动方案进行力竭运动,检测其运动前后的EEG和HRV相关指标变化情况。结果:与运动前相比,疲劳后HRV时域指标SDNN、RMSSD、pNN50及频域指标LF和HF均非常显著性下降(P<0.01),但LF/HF比值却出现非常显著性上升(P<0.01);脑电信号方面,运动后疲劳状态下的α波和β波出现下降,δ波和θ波则出现上升趋势,且α波与运动前比在PZ区显著性下降(P<0.05),在FPZ区非常显著性下降(P<0.01),θ波与运动前比在FZ、FPZ区显著性上升(P<0.05),δ波在运动后有上升趋势但无显著差异。结论:力竭运动造成女子运动员心脏自主节律失衡,大脑皮层抑制,因此EEG与HRV变化可作为判别女子运动员力竭疲劳的有效指标。 相似文献
4.
女子手球运动员力竭运动后HRV分析 总被引：2，自引：0，他引：2
目地:HRV是近年比较关注的无创性心电检测指标之一,可用于评定自主神经系统功能的变化,本实验研究力竭运动后女子手球运动员HRV时域和频域各参数的变化,探讨HRV作为运动训练监控指标的可能性。方法:应用OMEGA-WAVE仪测定19名女子手球运动员安静状态下和进行最大摄氧量测试后恢复到正常心率的5分钟心电图,得出其安静状态和运动后的SDNN(R-R间期标准差)、RMSSD(相邻N-N间期差值均方根值)、SDSD相邻间期差值的标准差、TP(总功率)、LF/HF、HFnorm(标化的HF功率)、LFnorm(标化的LF功率)。结果:力竭运动后SDNN、RMSSD、SDSD、TP、HFnorm都明显下降、LFnorm升高(P<0.01),LF/HF明显升高,存在显著性差异(P<0.01)。19名队员的平均最大摄氧量和最大心率分别是VO2max39.76±2.34(ml/kg.min),HRmax180±9(b/min)。 相似文献
5.
不同运动强度游泳训练对心率变异性的影响 总被引：1，自引：0，他引：1
通过不同运动强度游泳训练,探索不同强度运动刺激即刻对反映人体自主神经系统的HRV指标的变化规律,研究结果表明,①在同一强度刺激下,被试训练前后HRV指标LF呈显著性下降,而HF在统计学上没有显著性改变;②在不同强度运动刺激之间,被试训练后即刻HRV指标HF呈显著性下降,而LF在统计学上没有显著性差异.研究提示,反映HRV变化的LF和HF能够较好地反映心脏功能的状态,从而对于运动训练的科学监控具有一定的参考价值. 相似文献
6.
目的:研究中等强度有氧运动对青少年自主神经平衡功能的急性影响。方法:以60名(男30岁,女30岁)健康青少年(男22±2岁,女23±2岁)为研究对象。该研究共进行2次测试:第1次测试,运用Bruce跑台(FreeMotion;Fitness Blowout,USA)模式测量受试者最大心率(HRmax)和峰值摄氧量(VO2peak);第1次测试结束后48h~2 wk,进行第2次测试。第2次测试主要测量受试者基础状态的身体生理指标,以及运动前、运动后30 min和60min仰卧状态的心率(HR)、心率变异性(HRV)、动脉压力感受器敏感性(BRS)、呼吸频率(BF)等系列指标。急性有氧运动的目标心率=(最大心率-安静心率)70%+安静心率。结果:2×3(2个性别×3个时间点)ANOVA重复测量方差分析发现:两个性别在运动前、运动后30min和60min的LnHF、LnLF/HF、LnRMSSD、HR、LnRRI和BRSup-up存在性别和时间交互影响的显著性差异(P<0.05);Pearson相关性分析(CI=95%)发现:LnHF与LnLF/HF呈显著负相关(r=-0.674,P=0.000),LnHF与LnRMSSD呈显著正相关(r=0.949,P=0.000),LnHF与BRSup-up呈显著正相关(r=0.633,P=0.000),VO2peak与HR呈显著负相关(r=-0.416,P=0.000)。结论:1)中等强度有氧运动后青少年ANS平衡功能的恢复水平存在性别间的差异,表现为男性的恢复延迟于女性;2)引起ANS平衡功能恢复水平性别间差异的主要原因是由于男性PSNS活性的恢复延迟于女性,该差异可能是由性激素水平的差异引起;3)运动后HR恢复(HRR)的水平与ANS平衡功能恢复水平不同步,有氧运动能力的差异可能影响了运动后HRR。 相似文献
7.
为了探讨比赛情境中竞技健美操运动员心率变异性,防治赛前运动猝死,以及探索科学锻炼提供理论基础.方法:采用赛前模拟比赛的方法,用芬兰(polar RS800)远程遥测对运动员整个比赛过程心率变异性(HRV),频域进行分析.本研究截取整套动作完成时间的前90s,每30s为一段,分析各组受试者在竞技健美操成套动作各个阶段心率变异性的变化特点.结果显示,(1)除截取的前30s数据中,以心率、训练年限分类比较,SD1具有差异性(p<0.05);其他两段数据(20s、30s)显示不同专业级、心率、性别,训练年限分类之间心率变异指标无差异性.(2)前30s和后30s分别比较显示,HRp(平均心率)、SD1、SD2、总功率、VLF,LF、HF差异非常显著(p<0.01),且RMSSD差异显著(p<0.03)只体现在前30s与后30s分组比较中,但是HF和LF组间无差异性.(3)中间30s与后30s之问比较,SD2、LF/HF差异非常显著(p<0.001);HRp、总功率、VLF有差异性(p<0.05);其他指标(P>0.05)没有差异性.结果显示:(1)竞技健美操整套动作比赛属于递增负荷运动.(2)竞技健美操运动员HRV的影响因素中,训练年限,心率分类,专业界别分类,性别分类都无明显差异性:但是,个别指标如SD1,SD2,RMSSD,HF在不同分组中分析有差异性.(3)中等强度与亚级量强度,中等强度与极量强度HRV变化特征相似,而亚极量强度与极量强度HRV变化特征与前两者比较有差别.(4)在一定程度上大强度后心率变异性指标能防止运动猝死. 相似文献
8.
目的:为了探索中老年女性在定量负荷运动中心率变异性各指标的变化特点以及健身气功锻炼对中老年女性心率变异性的影响,为探索科学定量锻炼提供理论基础。方法:将1356名健康中老年女性分为气功组和对照组,通过在体育科研人员的指导下进行定量的体育运动前、后检测HRV各项指标的变化,分析两组受试者在心脏定量负荷试验各个阶段心率变异性的变化特点。结果:对照组在规范负荷运动后HF先下降后上升(P>0.05);SD1、SD2值迅速升高(P<0.01);在规范负荷运动的前、中、后阶段LF和RMSSD值缓慢回落(P>0.05);气功组在规范负荷运动后LF值较快地回落(P<0.05);RMSSD在规范负荷运动后下降非常显著(P<0.01);HF值在运动后快速下降(P<0.05),但仍旧高于对照组,说明气功组受试者在规范负荷运动停止后的迷走神经系统张力和交感神经系统的兴奋性均可能降低。结论:1)南昌市中老年女性心率变异性实验结果总体指标符合一般健康中老年人的心率变异性特点;2)健身气功组自主神经功能的调节作用在运动前与运动中调节功能水平比普通人群组高;3)气功组SD1、SD2、RMSSD值与先前的研究不同。 相似文献
9.
本文以29名竞技体育学院在校健康男性大学生为研究对象,研究了120w定量负荷运动时模拟低氧环境对HRV频域指标的影响。结果显示:2500m模拟低氧环境120w定量负荷运动时,受试者的低频值(LF)较常氧环境显著性降低,高频值(HF)较常氧环境显著性降低,而LF/HF较常氧环境无显著性差异。研究结论:LF反映交感神经活动水平,模拟低氧(2500m)环境下LF比常氧下低,交感神经活动水平降低;HF反映副交感神经活动水平,模拟低氧(2500m)环境下HF比常氧下低,副交感神经活动水平降低;模拟低氧(2500m)环境下LF/HF较常氧无显著性差异,说明低氧对交感神经与副交感神经均衡性的影响结果不明显。 相似文献
10.
文章旨在探索太极拳这项传统养生保健锻炼的动态习练过程中心血管自主神经活动的调节特点。主要采用选择习练太极拳2年以上的受试对象49名,其中大学生组30名,年龄18-25岁;中老年组19名,年龄53-70岁。采用超小型便携式动态心电记录盒完整记录受试者在太极拳习练过程中的心电信号,观察太极拳习练过程中太极拳动态习练过程中短时程HRV频域指标,分析交感和副交感神经调节的变化。研究表明,在20min习练太极拳过程中,两组VLF、VL(除中老年组LF进行性降低外)均先降低后上升,但均显著低于休息状态水平;两组HF均进行性降低且显著低于休息状态的HF水平;中老年组的LF/HF进行性降低但变化不明显,大学生组LF/HF在运动过程中先降低后回升且前15min显著降低。结论在习练过程中,随着心率的加快,交感神经活动水平与副交感神经活动水平均较静息状态时降低,但降低幅度不同,交感-副交感神经的均衡性当中始终是以副交感神经活动占主导优势。 相似文献
11.
The effects of high-intensity intermittent exercise on saliva IgA, total protein and alpha-amylase 总被引：3，自引：0，他引：3
Walsh NP Blannin AK Clark AM Cook L Robson PJ Gleeson M 《Journal of sports sciences》1999,17(2):129-134
The aim of this study was to assess the effect of an acute bout of high-intensity intermittent exercise on saliva IgA concentration and alpha-amylase activity, since this type of training is commonly incorporated into the training programmes of endurance athletes and games players. Eight well-trained male games players took part in the study. They reported to the laboratory after an overnight fast and performed a 60-min cycle exercise task consisting of twenty 1-min periods at 100% VO2max, each separated by 2 min recovery at 30% VO2max. Unstimulated whole saliva was collected over a 5-min period into pre-weighed tubes and analysed for total protein, saliva IgA and alpha-amylase. The saliva flow rate ranged from 0.08 to 1.40 ml x min(-1) at rest and was not significantly affected by the exercise. The performance of the intermittent exercise bout did not affect the saliva IgA concentration, but caused a five-fold increase in alpha-amylase activity (P<0.01 compared with pre-exercise) and a three-fold increase in total protein concentration (P<0.01). These returned to pre-exercise values within 2.5 h post-exercise. It has been suggested that IgA concentration should be expressed as the ratio to total protein concentration, to correct for any concentrating effect due to evaporative loss of saliva water when breathing through the mouth (as in strenuous exercise). The present study clearly demonstrates that this is not appropriate, since there is an increase in salivary protein secretion rate immediately after exercise (571+/-77 microg x min(-1) compared with 218+/-71 microg x min(-1) pre-exercise; P<0.05). The increased saliva alpha-amylase activity after exercise may improve the protective effect of saliva, since this enzyme is known to inhibit bacterial attachment to oral surfaces. The saliva alpha-amylase secretion rate was lower immediately pre-exercise than at any other instant, which may have been due to anticipatory psychological stress, although the subjects were all familiar with interval exercise. This emphasizes the need for true resting non-stressed control conditions in future studies of the effects of exercise on saliva constituents. 相似文献
12.
Amy Vivien Tanner Birthe Vejby Nielsen Judith Allgrove 《Journal of sports sciences》2013,31(7):680-689
AbstractThe aim of this study was to examine the acute response to plasma and salivary cortisol and testosterone to three training protocols. Ten trained endurance athletes participated in three experimental trials, such as interval training (INT), tempo run (TEMP) and bodyweight-only circuit training (CIR), on separate days. Blood and saliva samples were collected pre- and 0, 15, 30 and 60 min post-exercise. Peak post-exercise salivary cortisol was higher than pre-exercise in all trials (P < 0.01). After INT, salivary cortisol remained elevated above pre-exercise than 60 min post-exercise. Salivary testosterone also increased post-exercise in all trials (P < 0.05). Plasma and salivary cortisol were correlated between individuals (r = 0.81, 0.73–0.88) and within individuals (r = 0.81, 0.73–0.87) (P < 0.01). Plasma and salivary testosterone was also correlated between (r = 0.57, 0.43–0.69) and within individuals (r = 0.60, 0.45–0.72), (P < 0.01). Peak cortisol and testosterone levels occurred simultaneously in plasma and saliva, but timing of post-exercise hormone peaks differed between trials and individuals. Further investigation is required to identify the mechanisms eliciting an increase in hormones in response to CIR. Furthermore, saliva is a valid alternative sampling technique for measurement of cortisol, although the complex, individual and situation dependent nature of the hormone response to acute exercise should be considered. 相似文献
13.
心率变异性各指标在运动适应性评定中的应用 总被引：2，自引：0，他引：2
目的:通过测量摔跤运动员在大运动量训练期间心率变异性各指标的变化,观察大运动量训练对运动员心脏自主神经功能的影响,初步探讨心率变异性各指标在人体运动适应性评价上的应用。方法:选取摔跤运动员15人,分为优秀组(10人)和普通对照组(5人),在大运动量训练期间,连续三周进行心率变异性测试,获得其时域、频域各指标。结果:优秀组时域各指标参数中SDNN、RMSSD、SDSD在第三周出现增高,PNN50在第二周及第三周出现持续增高(P<0.05);频域法各指标参数中TP、HF、HFnorm、LFnorm在第三周出现增高,LF在第二周及第三周出现持续增高,LF/HF在第三周出现下降(P<0.05)。对照组时域各指标参数均无明显变化;在频域指标中HFnorm在第二周及第三周出现降低,LFnorm、LF/HF在第二周及第三周出现增高(P<0.05)。结论:伴随交感神经张力增加,以迷走神经功能加强为主导的自主神经功能提高是人体对运动负荷产生适应的表现。应用心率变异性对自主神经功能进行测定是理想的评定人体运动适应性的方法。 相似文献
14.
Athanasios Kabasakalis George Tsalis Ekaterini Zafrana Demetrios Loupos Vassilis Mougios 《Journal of sports sciences》2013,31(8):747-756
AbstractThroughout adolescence, swimmers begin to carry out demanding endurance and high-intensity training sets, the effect of which on redox status is largely unknown. The aim of the present study was to investigate the effects of 2000-m continuous swimming and 6 × 50-m maximal swimming on the redox status of adolescent swimmers. Fifteen male and 15 female swimmers, aged 14–18 years, provided blood samples before, immediately after, 1 h after, and 24 h after each exercise for the determination of redox status parameters. Oxidative damage was short-lived and manifest as increases in 8-hydroxy-2?-deoxyguanosine (8-OHdG) 1 h after high-intensity exercise (39%, P < 0.001) and in malondialdehyde immediately after both exercises (65%, P < 0.001). Alterations in antioxidant parameters were sustained during recovery: reduced glutathione decreased 24 h post-exercise (11%, P = 0.001), uric acid increased gradually after high-intensity exercise (29%, P < 0.001) and bilirubin peaked 24 h post-exercise (29%, P < 0.001). Males had higher 8-OHdG (49%, P = 0.001) and uric acid (29%, P < 0.001) concentrations than females. However, females showed higher values of malondialdehyde than males immediately post-exercise (30%, P = 0.039), despite lower pre-exercise values. In conclusion, both endurance and high-intensity exercise perturbed the redox balance without inducing prolonged oxidative damage in trained adolescent male and female swimmers. These swimming training trials were not found to be detrimental to the redox homeostasis of adolescents. 相似文献
15.
Chung Bing Yang Chung-Chief Chuang Chung Sen Kuo Chin Hsing Hsu 《Journal of sports sciences》2013,31(5):446-451
AbstractWe investigated the effects of an acute bout of exercise on serum soluble leptin receptor (sOB-R) concentrations. Eighteen male participants completed two different exercise sessions with intensities of 25% and 65% maximal aerobic capacity (VO2max). In addition to the energy expenditure during exercise sessions being measured, blood samples were collected before exercise, and immediately, at 24 h, and at 48 h post-exercise to analyse sOB-R, leptin and insulin levels. At 24 h post-exercise, sOB-R and leptin concentrations at the 65% VO2max were significantly different from those at the 25% VO2max. Leptin levels at 48 h post-exercise were also significantly lower for the 65% VO2max than for the 25% VO2max (P < 0.01). In the 65% VO2max session, the energy expenditure during exercise was significantly associated with leptin concentrations at 24 h and 48 h and sOB-R concentrations at 24 h post-exercise. However, no correlations were found between sOB-R and leptin at the three post-exercise time points. In conclusion, an acute bout of exercise with 920 kcal of output resulted in an increase in sOB-R levels at 24 h post-exercise. However, the changes in sOB-R levels due to an acute bout of exercise might not contribute to the delayed decrease observed for leptin. 相似文献
16.
训练组(男子足球运动员,n=16)和对照组(男子大学生,n=16)在功率自行车上完成一次递增负荷力竭运动。运动前、运动后以及运动后24 h采集静脉血,测定外周血淋巴细胞计数、淋巴细胞凋亡率、羟自由基、8-羟基脱氧鸟嘌呤(8-OHdG)和8-氧鸟嘌呤DNA糖基化酶(OGG1)。结果发现,运动后即刻,训练组和对照组外周血淋巴细胞计数(P<0.01;P<0.05)、淋巴细胞凋亡率(P<0.05;P<0.01)、羟自由基(P<0.01;P<0.01)、8-OHdG(P<0.01;P<0.01)和OGG1(P<0.01;P<0.01)均高于运动前水平,而训练组OGG1升高幅度高于对照组(P<0.01),其他各指标升高幅度则均明显低于对照组(均为P<0.01)。运动后24h,对照组外周血淋巴细胞计数低于运动前(P<0.01),淋巴细胞凋亡率高于运动前(P<0.01),而训练组则恢复至运动前;两组8-OHdG(P<0.05;P<0.01)均高于运动前,但升高幅度明显低于对照组(P<0.01);OGG1在对照组恢复至运动前,而训练组仍高于运动前水平(P<0.05)。因此,长期运动训练通过降低氧化应激水平、提高DNA修复能力、减轻DNA氧化损伤,抑制运动性淋巴细胞凋亡。 相似文献