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21.
运动训练监控中对血尿素及肌酸激酶的检测结果的室内质量控制 总被引：1，自引：1，他引：0
目的：对运动员生化指标的检测是长期跟踪监测，肌酸激酶和血尿素是在运动监控中最常检测的常规指标。其结果的准确性对指导运动训练，调整运动员的训练计划具有重要的意义和指导作用。故实验室对这两个指标进行了室内质量控制，以确保检测结果的准确性和稳定性。方法：合理收集控制值。绘制Levey-Jennings质量控制图，依据不同控制规则的预期性能，选择12a警告规则、13a失控规则、22a失控规则和10X失控规则为主要的控制规则。结果：每月单独统计的控制值的均值、标准差、变异系数，与累计滚动的统计结果相比，波动要大。累计滚动的月数越多。标准差越稳定，反映了日常质量控制工作处于正常的随机波动，分析过程质量良好。如果采用每月单独统计的均值和标准差用于下个月的控制依据，将会产生较大的起伏。实验室制定的质控范围远远小于厂家规定的控制范围。结论：采用的控制值包含的时间周期越长越客观，对于操作人员的调换、试剂盒批号的更换、校准品批号的更换、仪器保养前后的变化、试剂盒来源的变换等的变异因素可一并进行估计。对运动员生化指标的检测是长期跟踪监测，其结果的稳定性和准确性有尤为重要，如果仅靠厂家规定的质控品的范围来进行质量控制显然是不够的，而必须建立一套适合实际需要的室内质量控制方法。 相似文献
22.
Zheng?Xu-ningEmail author Zhu?Xiong-chao Ruan?Ling-xiang Zhang?Ling-ju Yuan?Min Shang?De-sheng Liu?Yang 《浙江大学学报(A卷英文版)》2004,5(2):246-250
Objective: To investigate changes in magnetic resonance spectroscopy (MRS) of lentiform nucleus during the early stage of
Parkinson’s disease. Methods: Twenty-five patients with idiopathic Parkinson disease with unilateral symptoms (IPDUS) and
25 healthy volunteers were enrolled in this study. MRS of the lentiform nucleus in each patient was taken and then concentrations
of N-acetylaspartate (NAA), Creatine (Cr) and Choline, (Cho) were calculated. Results: Compared to that in the control, NAA/(Cho+Cr)
was significantly lower in the lentiform nucleus contralateral to symptoms and even that in the ipsilateral side in IPDUS
patients (allP<0.05); while there was no difference between the two sides in the healthy volunteer (P>0.05). The ratio of NAA/(Cho+Cr) ipsilateral to the sympatomatic side of the patient was also lower than that of the controll
(P<0.05). Conclusions: there might be some changes with MRS on the lentiform nucleus during the early stage of idiopathic Parkinson’s
disease with unilateral symptom. MRS may be one of the reliable methods for early or even sub-clinical diagnosis. 相似文献
23.
Javad Mohiti Mostafa Behjati Mohammad H. Soltani Ali Babaei 《Indian journal of clinical biochemistry : IJCB》2004,19(1):113-117
Measurement of cardiac markers is an index of care standard in the assessment and diagnosis of cardiovascualr disease. Two
of the major cardiac markers are Creatine Kinase isoenzyme CK-MB and Troponin T, which are extensively used in the diagnosis
of heart disease. The release of Troponin T and creatine kinase isoenzyme (CK-MB) was investigated in 50 coronary artery bypass
surgery patients. Measurement of plasma samples was carried out at five different time points, namely before surgery, 1,6,12,24
hours after surgery. The results indicated that CK-MB level were increased by a factor more than four times compared with
the upper limit of baseline (befor surgery). Troponin T concentration showed more than six fold over the upper limit of baseline
(before surgert) at 1,6,12,24 hours after surgery. In order to assess the significance of the length of the surgical procedure
on the release of Troponin T and CK-MB, the surgery patient were divided into two groups according to the length of the surgical
procedure: group I was selected on the basis that the surgical procedure they underwent lasted above 90 minutes and group
II with a surgical procedure below 90 minutes. Both Troponin T and CK-MB showed a significant increase in-group I compared
to group II. To investigate the likelihood that this effect is party due to myocardial infarction during surgery, the patients
were divided into two groups: Group A with some sings of myocardial infarction on Q wave of ECG and group B without any change.
The results showed approximately a two-fold increase of these markers in-group A compared to group B. Since these markers
reach into blood following damage to myocardial their increase in patients with time course surgery of more than 90 minutes
and those with a probability of MI during operation, indicating that these patient fall into a high risk group of repeat (MI)
after surgery. 相似文献
24.
本文综述了家禽营养中生物素的研究成果。主要包括：生物素的吸收与代谢、缺乏症、饲料中生物素的利用以及家禽日粮中生物素的补充等。 相似文献
25.
本研究观察口服肌酸对武术套路运动员运动机能的影响,发现口服肌酸可以增加体校武术套路运动员无氧功率的峰值,降低体校武术套路运动员运动后乳酸浓度,但对血液中LDH活性无明显影响。提示肌酸对于提高武术套路运动员的爆发力,优化动作的质量可能有较好效果。 相似文献
26.
Martin D. Hoffman Natalie Badowski Joseph Chin Kristin J. Stuempfle Carol A. Parise 《Journal of sports sciences》2017,35(7):669-677
The primary study objective was to identify determinants of short-term recovery from a 161-km ultramarathon. Participants completed 400 m runs at maximum speed before the race and on days 3 and 5 post-race, provided a post-race blood sample for plasma creatine kinase (CK) concentration, and provided lower body muscle pain and soreness ratings (soreness, 10-point scale) and overall muscular fatigue scores (fatigue, 100-point scale) pre-race and for 7 days post-race. Among 72 race finishers, soreness and fatigue had statistically returned to pre-race levels by 5 days post-race; and 400 m times at days 3 and 5 remained 26% (P = 0.001) and 12% (P = 0.01) slower compared with pre-race, respectively. CK best modelled soreness, fatigue and per cent change in post-race 400 m time. Runners with the highest CKs had 1.5 points higher (P < 0.001) soreness and 11.2 points higher (P = 0.006) fatigue than runners with the lowest CKs. For the model of 400 m time, a significant interaction of time with CK (P < 0.001) indicates that higher CKs were linked with a slower rate of return to pre-race 400 m time. Since post-race CK was the main modifiable determinant of recovery following the ultramarathon, appropriate training appears to be the optimal approach to enhance ultramarathon recovery. 相似文献
28.
肌酸的补充与运动能力 总被引：8，自引：2，他引：6
刘大川 《武汉体育学院学报》1999,(2)
本文从肌酸在能量代谢中的作用、补充肌酸对肌肉中肌酸含量的影响和对运动能力的影响等方面进行了文献综述与分析。 相似文献
29.
肌酸是存在于我们体内的一种天然营养素，补充肌酸能提高短时间大强度运动训练的成绩。其作用机制可能与骨骼肌磷酸肌酸储备量增加、对H＋耐受力增强、蛋白质合成增加及生物膜的稳定性增强有关。影响肌酸补充效果的因素包括骨骼肌纤维类型、骨骼肌初始肌酸含量、运动和饮食及激素水平等。 相似文献
30.
肌酸的补充与运动供能能力 总被引：2，自引：0，他引：2
本文综述了补充肌酸对运动中能量代谢的影响。肌酸作为1种能量补剂受到广泛关注。在参阅了大量文献后，笔者从肌酸对磷酸原供能系统、糖酵解供能系统和有氧氧化供能系统的影响，分析了肌酸对运动中能量代谢的影响。 相似文献