INTRODUCTION

Heart transplantation

For patients with heart failure (HF) the 5-year mortality rates are 62% for women and 75% for men[1], with even higher rates in patients with end-stage HF[2].Although these are old references, recent findings conclude that survival in HF patients has hardly changed since the 90’s[3]. Heart transplantation (HTx)is an established treatment to improve survival in selected patients with end-stage HF. From 1983 and to date, more than 920 HTx have been performed at Oslo University Hospital in Norway.

After HTx, the patients require lifelong immunosuppression to prevent rejection of the graft. These drugs have a potential to give adverse complications such as diabetes, gout, hypertension and osteoporosis,and serious side effects, such as higher risk of infections, renal failure and cancer. These side effects are the leading causes of death in the long-term,together with an advanced HTx-specific process of atherosclerosis, called coronary allograft vasculopathy(CAV)[4].

According to the 2012 ISHLT registry, the median survival for all HTx patients is 10 years, but if surviving the fi rst year, the survival rates are higher and show a 63% survival past 10 years[4]. Increased knowledge about CAV and immunosuppression has resulted in further improved survival. However, the HTx recipients still have a shorter estimated length of survival than the general population.

Physical capacity after HTx

The dynamics of physical capacity after HTx is illustrated in Figures 1 and 2. Physical capacity increases significantly after HTx as a result of therapy, as shown by peak oxygen uptake (VO2peak) levels above 12 mL/kg per minute in published studies (Figures 1 and 2). Osada et al[5] and these two figures show that the highest rate of increase is found within the first years. In nearly 70%of the studies, regardless of time after HTx, VO2peak is below 20 mL/kg per minute, also classified as Weber function class B-C[6]. Patients within function class B and C are shown to be similar to coronary artery disease (CAD) and HF patients referred to rehabilitation programs[7]. VO2peak is often used as the primary outcome measure in exercise intervention studies after HTx[8].

1.4 统计学分析 采用SPSS 17.0对数据进行统计分析，计量资料采用进行表示，比较差异采用t检验；计数资料采用%进行表示，比较差异采用χ2检验；P<0.05为差异有统计学意义。

Physical capacity as a prognostic variable

The gold standard measurement of physical capacity is VO2peak, and is defined as “the maximum ability of the cardiovascular system to deliver oxygen to exercising muscles and of the exercising muscle to extract oxygen from the blood”[9]. VO2peak is shown to be a strong predictor of survival in general populations[10,11], among patients with CAD[12], and in patients with severe HF[13].Limited exercise capacity is the cardinal symptom in HF.The HF patients with VO2peak ＜ 12 mL/kg per minute are considered to have the worst prognosis, despite optimal medical therapy, and can be appropriate candidates listed for HTx[14]. These patients are most likely men ＞50 years of age[4]. When evaluating younger patients and women, it is found reasonable to include age and gender adjusted levels of exercise capacity, and values≤ 50% percent of predicted VO2peak differentiate better in these populations[14].

However, studies addressing the relation between VO2peak and survival after HTx are currently lacking,although a number of other predictors have been identified through register-data analyses. These predictors are: Non-ischemic cardiomyopathy as the primary diagnosis, younger recipient age, younger donor-graft age and shorter allograft ischemic time;all associated with a better long-term prognosis[4,15,16].The mortality beyond one-year after HTx has remained relatively constant, and Stehlik et al[4] predict that interventions resulting in a reduction of mortal events in the long-term are needed to achieve further improvements in survival after HTx.

在对土地资源进行配置时，市场具有一定的主导意义，市场决定了土地资源的具体交易情况，所以要对现阶段土地供给形式的“双轨制”进行合理改变，不断推进国有土地使用权有偿使用有限期的新制度，进而充分展现市场在土地资源配置当中的主导地位。

In a recent retrospective study from our center,investigating survival in two different HTx populations(n = 178, n = 133), we found that VO2peak and SF-36 physical function (PF) sum-score were strong predictors for survival in each population, respectively[17]. In the“VO2peak cohort” (n = 178), the mean age was 52 years,mean age after HTx was 2.5 years, mean VO2peak was 19.6 mL/kg per minute, 88% were men and mean observation time was 11 years. The most important predictors (analyzed by multiple Cox regression) for survival in this population were VO2peak (HR = 0.917, P＜ 0.001) age at time of test (HR = 1.045, P ＜ 0.001)and CAV development (HR = 1.968, P = 0.001), and the group above the median VO2peak had an increased survival of four years. Similar results were found in the “SF-36 cohort” where the mean age was 54 years, mean time after HTx was 4.5 years, mean SF-36 physical function (PF) score was 90 and mean observation time was 10 years. The most important predictors (analyzed by multiple Cox regression) for survival in this population were the PF score (HR =0.983, P ＜ 0.001), age (HR = 1.077, P ＜0.001),smoking history (HR = 1.077, P = 0.016) and CAV development (HR = 1.674, P = 0.039), and the group above the median PF score value had an increased survival of four years.

HIT is a feasible and efficient modality of exercise among maintenance HTx recipients, but the mechanisms behind this effect is poorly understood. Our results suggest that the beneficial effects seen in HTx recipients differ from CAD and HF patients, with more prominent peripheral effects from HIT exercise,rather than central adaptations with increased CO.We have showed that HIT significantly increased levels of inflammatory mediators of angiogenesis,suggesting that HIT can regulate and stimulate blood vessel formation in skeletal muscles and thus increase physical capacity.

The relationship between physical health and long-term survival

Earlier studies addressing survival, have estimated how physical performance pre HTx is related to survival after HTx. Physical capacity (measured by VO2peak)in this population is well known to predict survival and supports the clinicians in the selection of HTx candidates[14]. Our study documented that also VO2peak measured after HTx is a strong predictor for long-term survival[17], and this result is in line with the only study we found that demonstrated a relationship between physical performance (measured by VE/VCO2 slope) and survival in a small sample of HTx patients (n = 49)[18].Other related studies on this topic describe how VO2peak is related to soft end-points; how a beneficial VO2peak correlates with NYHA class 1-2 after HTx[19] and how the pre-transplant VO2peak, together with age, predict the gain in physical capacity post HTx[5]. Succeeding our study on survival, Rosenbaum et al[20] published new knowledge in this field, with a study investigating the effect of early rehabilitation on survival: They concluded that early cardiac rehabilitation participation after HTx could predict survival time.

The measurement of physical capacity requires CPET equipment and test personnel, and thus, is quite costly. Although VO2peak is the gold standard to examine exercise performance, there are other physical tests with limited costs that can be useful in the follow-up,found to correlate with CPET results. Such physical tests are the 6-min walk test and the shuttle walking test[21], but if these test are associated with prognosis remains to be determined. If resources are limited, we also found that the self-reported physical health (PF-score) showed a similar effect on long-term survival in the HTx population[17]. Research in general populations underscore the importance of physical activity and report a dose-response effect on survival rates[22,23],as well as a strong dose-response relation on selfreported health[24]. As shown in another of our studies[25],physical performance measured as VO2peak is highly correlated with SF-36 PF sum-scores, and both were found to be highly associated with prognosis in our survival analysis[17]. Accordingly, we suggest that such measures should be more frequently used after HTx to identify patients at higher risk for complications.

Exercise after HTx - the past and the future

To increase physical capacity and prevent long-term complications such as hypertension and diabetes,aerobic exercise after HTx has a positive effect, but HTx recipients’ physical capacity still remains subnormal in most studies[26]. High-intensity interval training (HIT)is proven to be a more efficient exercise modality than moderate-intensity continuous training (MICT) in order to increase VO2peak, shown in patients with HF[27],CAD[28], metabolic disease[29], as well as in healthy individuals[30]. The new knowledge has had a great impact on how general cardiac rehabilitation programs are organized today. These two different exercise modalities are illustrated in Figure 3. HIT corresponds to an intensity of 16-18 on Borg’s rated perceived exertion(RPE) 6-20 scale[31,32], and MICT to Borg 12-15.

Rehabilitation after HTx has traditionally had, and still has, a more conservative approach, with MICT as traditionally recommended, mainly due to uncertainty and concerns regarding denervation with consequently chronotropic incompetence and parasympathetic impairment[33]. The heart rate (HR) will typically be higher at rest, with a slower increase during exercise, a lower maximum HR at peak exercise, and a slower HR decrease after exercise cessation (Figure 4).

The chronotropic incompetence is most prominent the first months after HTx and tends to be largely normalized in the majority of patients after 12 mo[34],as illustrated in Figure 5. Recent randomized controlled trials (RCTs), have investigated the effect of HIT in maintenance HTx recipients and have to a large extend overruled the traditional, conservative approach with MICT[35-37]. These studies showed that HIT increased VO2peak significantly compared to the control groups,and that a HIT intervention was safe and well tolerated. References to some of these results are mentioned in the most recent recommendations for cardiac rehabilitation from 2013[38]. The mechanisms of effect are probably multifactorial and might involve improved chronotropic response (CRI)[35,37], endothelial function[36] and less development of CAV after a longterm exercise intervention[39].

So far there are no studies on the effect of HIT in the novo patients, but a similar HIT intervention study is currently ongoing in Scandinavia[40]. One of the goals in this study is to update, optimize and implement new exercise prescriptions also in this group.

新时代的少年应当是拥有远大理想、高雅情趣的好少年，雅行教育的最终目的是要把学生培养成为“秀外慧中的现代东方小雅士”。正是从此种理念出发，学校开设了书法、创意手工、足球、舞蹈、独轮车、花样跳绳、创新作文等30多个小雅社团，充分利用校内外教师资源，实行学生“走班制”，让学生根据自己的爱好、兴趣自主参加。每星期保证两个小时的活动时间，有助于学生收获课堂之外的“第二种能力”，培养学生良好的兴趣爱好，树立正确的人生观和价值观，促进学生身心健康和谐发展。

Meta-analyses in HF populations[41,42] find a possible long-term effect of exercise-based rehabilitation (MICT protocols) on survival and health related quality of life (HRQoL), and most importantly; a significantly decrease in re-hospitalization. Knowledge about exercise-based rehabilitation and the effect on mortality and hospital admissions in HTx recipients are currently missing, as recently stated in a 2017 Cochrane review on the effectiveness and safety of exercise-based rehabilitation in HTx recipients[43]. The lack of research regarding possible long-term benefits of exercise was also pointed out in the published meeting report from 2014: “Consensus recommendations for a research agenda in exercise in solid organ transplantation”[44].

将车子泊在停车场，念蓉走进酒店大堂。她弄不清自己到底想干什么，她只知道此时，两条腿似乎完全不再属于自己。电梯在十二层停下，念蓉走出去，脚踩上厚厚的地毯，两腿软得抬不起来。她记得房卡上的号码——1 2 1 0，那代表着一个封闭并且私密的空间：厚厚的窗帘，舒适的大床，飘着玫瑰花瓣的洗澡水，两个纠缠在一起的身体……

HIT intervention and long-term effects

Regarding long-term effects of exercise in HTx recipients, we have conducted a 5-year follow-up study of a previous RCT investigating the effects of a HIT intervention[25]. Forty-eight maintenance HTx patients,mean four years after HTx were randomized to HIT intervention or control with 12 mo duration[37]. The study demonstrated a significant improved VO2peak (mean difference between groups: 3.6 mL/kg per minute),increased muscular capacity and less development of CAV compared to the control group[37,39]. However,at the 5-year follow-up (n = 41), the HIT group had not sustained the exercise intensity over time, and although the decline in VO2peak from baseline to 5-year follow-up was numerically lower in the HIT-group, there were no significant differences between the groups for the parameters described above (Figure 6). These findings were explained by the similar amount of daily(moderate) activity in both the HIT and the control group, measured at the 5-year follow-up. Our results differ from a study by Moholdt et al[45] who investigated long-term effects of a HIT intervention after myocardial infarction (MI). These MI-patients still had a significantly higher aerobic performance at the 30 mo follow-up compared to the control group, explained by more frequent exercise in the HIT group. Although the initial 1-year gain in physical capacity in the HIT group was not sustained and the mean difference between groups at the 5-year follow-up was non-significant,only the control group had a significant decrease within group from baseline to the 5-year follow-up. This significant decrease, corresponding to a 9% decline in mL/kg per minute, could mostly be explained by an expected age-related decrease in VO2peak. Healthy young adults show a decline of 3%-6% each decade,and this decline is shown to accelerate with age; a decline of 15% is found normal and corresponds to the age group of the TEX population[46]. This age related VO2-decline is related to decreasing maximal stroke volume, decreasing blood fl ow to skeletal muscles and mitochondrial dysfunction[47]. As for the HIT group,the decrease from baseline to the 5-year follow-up in VO2peak was less pronounced (-6%), and could possibly indicate a hidden long-term effect of the intervention.In contrast, the development of anxiety symptoms was significantly different between the groups; the exercise group showed decreased symptoms of anxiety, whereas the control group had an increased anxiety symptom score. This beneficial trend in anxiety development together with no negative trends in other secondary end points, support the statements of HIT as a safe exercise modality in HF patients[48], and in maintenance HTx patients[35-37].

Nevertheless, more research is still needed regarding long-term effects of exercise, and to optimize the rehabilitation regimes and improve the HTx recipients’future prognosis[43,44].

HIT intervention in de novo HTx recipients

While HIT already is an established exercise modality in patients with HF[27] and CAD[28], and more recently in maintenance HTx[35-37], the upcoming results from the HITTS study[40] will contribute to fill the gap of knowledge related to the effect of HIT among de novo HTx recipients.In addition to exercise capacity measurements, other important secondary outcomes are: development of CAV, improvements in chronotropic response and changes in cardiac and endothelial function. The results from the HITTS study will make a strong contribution to improve and increase the knowledge-base about how early HTx-rehabilitation should be organized in order to gain the most optimal results. The study is followed closely by our dedicated HTx-staffs in Scandinavia,and one of our main goals is to document knowledge about safety and effects of HIT, and thereby initiate an update of the current guidelines. If HIT is found to be safe (and with potentially beneficial effects) also among de novo HTx patients, the patients will have the possibility to participate in established cardiac rehabilitation programs, which usually combines both MICT and HIT exercise. These rehabilitation programs are usually group based, rather than only consistent individual physiotherapy, thus demanding less government resources.

Mechanisms behind the “HIT-effect”

As described previously, the effects of HIT interventions are so far mostly studied in healthy individuals,CAD and HF patients. The main mechanisms behind the increase in exercise capacity are shown to be through central factors, induced by a prominent improvement in cardiac output (CO)[27,49]. However,the “HIT-effect” in maintenance HTx recipients show different results, seemingly with peripheral factors as the main mechanisms; by improvement in skeletal muscle exercise capacity[37], endothelial function andvasodilatation[36], rather than an increased CO[50]. The underlying triggers behind these peripheral effects are poorly understood, and the potential of inflammatory signaling pathways are not explored in detail. Markers of inflammation have been studied as an additional effect of exercise through long-term steady state levels (before and after exercise intervention), showing mostly neutral results[36,39,51].

11 Arena R, Myers J, Guazzi M. The future of aerobic exercise testing in clinical practice: is it the ultimate vital sign? Future Cardiol 2010; 6: 325-342 [PMID: 20462339 DOI: 10.2217/fca.10.21]

HIT and the immediate responses in markers of inflammation and angiogenesis

Exercise training, regardless of intensity, led to an increase in multiple systemic, angiogenetic and platelet derived inflammatory mediators[52]. These results are in line with published research showing the pro-coagulation state during exercise, with blood platelet activation potentially reflecting the increase in catecholamines and shear stress[53], promotion of NO production from activated endothelial cells[54,55], and regulation of the growth and repair of blood vessels[56].The activation of the endothelium and thereby induction of capillary growth in skeletal muscle through proangiogenetic mechanisms may play an important role in the beneficial effects of HIT. When we compared the response in inflammatory mediators during the HIT and MICT sessions, we observed a higher response in both Ang-2 and VEGF-1 with increased intensity. Kilian et al[57] have previously shown an increase in mRNA for VEGF in whole blood during HIT in healthy children.VEGF is dominantly secreted by working skeletal muscles, an essential factor to increase capillary density,oxygen delivery and thereby exercise performance[58-60].Based on our previous results showing improved muscular exercise capacity after HIT[37], and now the finding of an increased VEGF response, we suggest that this mechanism is of high importance also in the HTx recipients. The fact that HIT markedly increased mediators of angiogenesis and neovascularization, may contribute to explain the different trigger mechanisms behind the two different exercise modalities.

CAV

CAV is characterized by intimal thickening and a more diffuse narrowing of the coronary arteries’ lumen than conventional atherosclerosis[61]. The mechanisms of development are described as both immunological and non-immunological, possibly modi fi able factors[62].It can be detected by coronary angiography, but intravascular ultrasound (IVUS) is now more frequently used, and is a superior diagnostic tool to detect early changes in intimal thickening (early CAV)[63]. The early CAV has been validated as a reliable surrogate marker for subsequent mortality, nonfatal major adverse cardiac events, and development of angiographic CAV following HTx[64,65]. CAV progression is a highly prioritized field of research among HTx clinicians and researchers, to further improve HTx prognosis. As a result, Kobashigawa et al[66] introduced statin therapy that showed to have beneficial effects on one-year survival and the incidence of CAV. Statins became routine therapy after HTx at our center from 1997.More recently, a Scandinavian multicenter RCT (The Schedule-study) has shown that early everolimus initiation with calcineurin inhibitor withdrawal reduces the progression of CAV in de-novo HTx recipients[67,68].

HIT and the effect on CAV

The effect of non-medical prevention strategies, such as HIT interventions, has also been studied by IVUS and have shown less progression of atherosclerosis both in mice[69] and in patients after MI[70]. We found the same trend in maintenance HTx recipients after a HIT intervention[39], but the positive effects were not sustained in the long-term as shown in the 5-year follow-up study[25]. Furthermore, exercise is shown to have a positive influence on the endothelium through increased nitric oxide production, and by reduction of inflammation[71,72]. This effect could possibly be enhanced through higher shear stress triggered with higher exercise intensity. A gain in endothelial function following a HIT intervention is found in CAD patients[73].However, a relatively small sample size in the 1- and 5-year follow-up studies[25,39] limits our conclusion in the HTx population, and the effect of HIT on CAV should be examined in a larger sample and include a second intervention arm with MICT. It has been explored how early medical therapy can influence CAV progression in the long-term, and studies with everolimus are found to have positive impact on CAV severity in de novo HTx patients, whereas no effect is seen if everolimus is introduced later on[74]. The effect on CAV severity by an early initiation was also sustained in the long-term[67,68].This illustrates an “opportunity window” during the first year after HTx. Knowing that the CAV development is most pronounced the first year after HTx, we anticipate that similar mechanisms may be seen with an early initiation of HIT. Results from the HITTS study[40] will contribute to a better understanding of the relationship between exercise and CAV development.

Health related quality of life

The HRQoL after HTx has been reported to increase significantly, with high levels of satisfaction in overall HRQoL; also stable over a 5-year period (measured from 5 to 10 years after HTx)[75]. Although, when HTx patients are compared with the general population, the HRQoL remains beneath normal values[76]. To improve HRQoL, and especially physical health, exercise interventions have shown to be successful and this is in contrast to the more neutral results reported in control groups[77,78]. Research on HRQoL after HTx regarding the effect of HIT (compared to MICT) is very limited,and the existing studies show mixed results; some studies show similar effects on HRQoL[51], while we and others have shown a beneficial effect with a significant increase after HIT[37,79].

巴克夏正要往下跳，何副书记出来了，在灯火阑珊中踉踉跄跄地走了。我不由得松了口气 ，但不知刚才发生了什么事情。

Mental health, anxiety and depression

In the post-transplant stage the prevalence of significant depression and anxiety remains substantially above the general populations, and it tends to increase over time[80,81]. As it is found that depressed HTx recipients have a higher risk of mortality, screening for depressive symptoms during follow-up is recommended[81-83]. As an approach to increase mental health, the effect of exercise and HIT has been studied. The results showed that exercise decreases the burden of depression and anxiety, with HIT showing significant positive effects compared with usual care[79]. Additionally, the results align with the correlation between higher physical capacity and less depression and anxiety rates[25,83,84].

In our 5-year follow-up study after a HIT intervention[25], we measured physical and mental health as well as measures of physical capacity at each study visit, and at the 5-year follow-up there was significantly less development of anxiety symptoms in the HIT group compared to the control group. The long-term difference in anxiety between the HIT group and the control group is considered a valuable finding, as anxiety is a frequent health issue after HTx, especially in the long-term follow-up[80]. Overall, there was a positive correlation between the measured VO2 peak and the self-reported physical health (SF-36 PF sum-score).These findings might suggest that a 1-year “heavy”exercise intervention has a long-term value when it comes to self-confidence and trust regarding what your heart (and body) actually can tolerate of exertion, strain and physical work.

在开展阅读教学的过程中，教师不仅要合理地运用现代化的教学手段，同时也需要摆正自身的教学态度，将微课教学与阅读教学进行融合，拓展学生的学习层面，提升学生的综合素养。

CONCLUDING REMARKS

Our findings, supported by a review of the existing literature, suggest that measures of physical health should be included frequently also after HTx, as they predict prognosis and survival in the long-term. A dose-response effect of physical capacity on survival was also found in the HTx population.

Other well-known predictors of HTx survival such as diagnosis prior to HTx, is chemic time, donor age,measurements of cardiac output and kidney function by creatinine did not add any additional explanation to the regression models.

42 Sagar VA, Davies EJ, Briscoe S, Coats AJ, Dalal HM, Lough F,Rees K, Singh S, Taylor RS. Exercise-based rehabilitation for heart failure: systematic review and meta-analysis. Open Heart 2015; 2:e000163 [PMID: 25685361 DOI: 10.1136/openhrt-2014-000163]

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2.3.1 理论考核。以出科考核方式（选择题与病案分析题）对学生进行综合评价，主要考察以下几个方面：对急性心肌梗死这一严重胸痛疾病的理论知识的掌握，如病理学分析、诊断及鉴别诊断、治疗；实践患者的病史采集、体格检查、疾病诊断及鉴别诊断、治疗方案。结合带教老师对学生平时表现的评定，在成绩中予以一定的比例（20%）。即总成绩=理论成绩（80%）+平时表现成绩（20%）。规定“优秀”≥85分，“良好”≥75分，“及格”≥60分，“不及格”＜60分。

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We hypothesized that investigation of immediate exercise effects in inflammatory signaling pathways during HIT could contribute to further explain the “HIT-effect” in the HTx recipients, and recently we performed such an exploratory study[52]. Fourteen patients were included in the randomized cross-over study, comparing HIT to MICT. Blood samples were drawn before, during and after exercise. The main results from the enzyme immunoassays analyses were that exercise, regardless of intensity, induced a significant immediate response in several vascular, angiogenetic and particularly in platelet derived inflammatory mediators in HTx recipients shown in Table 1. HIT showed trends to induce an increased response in von willebrand factor (vWF), vascular endothelial growth factor 1 (VEGF-1) and Angiopoetin-2(Ang-2), and a decreased response in growth derived factor 15 (GDF-15), compared to MICT (Table 1).

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李高明的家乡瓦纳村以哈尼族为主，村子闭塞，来往县城的道路崎岖而危险，坐个摩托车都得小心翼翼，害怕掉下去。仅进过几次城的李高明只会说哈尼语，刚到工地时，和老板的沟通都得靠着同为哈尼族的“代办”朋友。“语言障碍非常大，会听30%。”基本不会讲。想回家啊，可语言不通，道路不识，走能走到哪里去？

14 Mehra MR, Kobashigawa J, Starling R, Russell S, Uber PA,Parameshwar J, Mohacsi P, Augustine S, Aaronson K, Barr M.Listing criteria for heart transplantation: International Society for Heart and Lung Transplantation guidelines for the care of cardiac transplant candidates--2006. J Heart Lung Transplant 2006; 25:1024-1042 [PMID: 16962464 DOI: 10.1016/j.healun.2006.06.008]

15 Jaramillo N, Segovia J, Gómez-Bueno M, García-Cosío D,Castedo E, Serrano S, Burgos R, García Montero C, Ugarte J,Martínez Cabeza P, Alonso-Pulpón L. Characteristics of patients with survival longer than 20 years following heart transplantation.Rev Esp Cardiol (Engl Ed) 2013; 66: 797-802 [PMID: 24773860 DOI: 10.1016/j.rec.2013.05.016]

教育的中心是以人为本，这同样适用于乡镇中心幼儿园的教育。但目前呈现的趋势是乡镇中心幼儿园教师在教学过程中并不能全面做到以学生为本展开教育工作。究其原因在于乡镇中心幼儿园的教育工作开展的每一步都需要严格遵循上级部门的指示，这严重限制了教师的教学。一旦教师的教学存在与上级部门硬性规定相背离的情况，就会马上被相应的行政手段所干预，教师的教育热情就在这过程中逐渐被削弱。同时乡镇中心幼儿园缺乏对教师客观、公平、统一的考量标准，使优秀的教师不被鼓励和认可，严重打击了教师的工作积极性。

16 Tallaj JA, Pamboukian SV, George JF, Kirklin JK, Brown RN, McGiffin DC, Acharya D, Loyaga-Rendon R, Melby SJ,Bourge RC, Naftel DC. Have risk factors for mortality after heart transplantation changed over time? Insights from 19 years of Cardiac Transplant Research Database study. J Heart Lung Transplant 2014; 33: 1304-1311 [PMID: 25443871 DOI: 10.1016/j.healun.2014.08.014]

随着计算机技术、网络技术、移动终端技术的飞速发展，人们迫切希望能够随时随地从互联网上获取信息和服务，移动互联网应运而生并迅猛发展，淄博作为我国五大陶瓷主产区之一，基础雄厚。作为传统行业，陶瓷为淄博经济社会发展做出了重大的历史贡献，也逐步发展成淄博的城市名片，而不可否认的是，在过去的很多年中，粗放式的经营和管理方式也在一定程度上阻碍了其市场发展，比如从产品设计、原料采购到仓储运输、订单处理，再到批发经营、终端零售等产业链各个环节基础薄弱，组织化程度、分工协作水平不高，运行成本居高不下。

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26 Hsieh PL, Wu YT, Chao WJ. Effects of exercise training in heart transplant recipients: a meta-analysis. Cardiology 2011; 120: 27-35[PMID: 22094922 DOI: 10.1159/000332998]

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33 Piña IL, Apstein CS, Balady GJ, Belardinelli R, Chaitman BR, Duscha BD, Fletcher BJ, Fleg JL, Myers JN, Sullivan MJ;American Heart Association Committee on exercise, rehabilitation,and prevention. Exercise and heart failure: A statement from the American Heart Association Committee on exercise, rehabilitation,and prevention. Circulation 2003; 107: 1210-1225 [PMID:12615804 DOI: 10.1161/01.CIR.0000055013.92097.40]

为了验证试验模型的正确性，结合实际情况，按照乙醇浓度40%、浸提时间60 min、浸提温度40℃、浸提pH 6.6，进行5次重复试验验证，测得甜菜苷类色素含量的平均值为4.35 mg/100g，与预测值的相对误差为4.13%，充分验证了模型的正确性。该参数具体有效。在此条件下，甜菜苷类色素含量的预测值为5 mg/100g，实际测得甜菜苷类色素提取量平均为4.35 mg/100g，提取率为87.19%，与预测值的相对误差为4.13%，充分验证模型的正确性。与赵珍珍[10]的研究结果相近，说明参数有效。

2.3 两组免疫球蛋白比较 治疗前，两组血清IgA、IgG、IgM及IgE水平比较差异均无统计学意义(均P>0.05)；治疗后，两组IgA、IgG及IgM水平均较治疗前出现上升(均P<0.01)，而IgE则明显下降(P<0.01)，同时观察组IgA、IgG及IgM水平明显高于对照组(均P<0.01)，IgE水平低于对照组(P=0.00)。见表3。

35 Dall CH, Snoer M, Christensen S, Monk-Hansen T, Frederiksen M, Gustafsson F, Langberg H, Prescott E. Effect of high-intensity training versus moderate training on peak oxygen uptake and chronotropic response in heart transplant recipients: a randomized crossover trial. Am J Transplant 2014; 14: 2391-2399 [PMID:25135383 DOI: 10.1111/ajt.12873]

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Considering exercise prescription and future guidelines, our findings suggest that moderate levels of exercise and intensity are insufficient to maintain the improved VO2peak achieved after a HIT intervention.Thus, intermittent periods of HIT are likely to be necessary. Also, the number and length of HIT intervals needed in a HIT session should be further investigated.If a modified HIT protocol with shorter and fewer intervals has comparable effect to a 4 × 4 protocol,it could probably increase the patients’ motivation and adherence to exercise in the long-term. When considering other long-term effects, the benefit from a tough and intense HIT-intervention showed a positive effect on the development of anxiety symptoms. The exercise prescription in de novo HTx recipients is still conservative, consisting mainly of MICT exercise,but this traditional guideline might change when the ongoing HITTS study is completed. Existing gaps in knowledge are briefly mentioned in Table 2, and the results from the HITTS study will contribute to fillsome of these gaps, and may also have the potential to update, optimize and possibly include HIT as a safe exercise modality in future guidelines.

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3.2.2 心理护理 乳房癌根治术创面大，瘢痕大术后又发生了皮瓣坏死加重了其心理负担，应与患者建立相互信任的护患关系，了解并掌握不同的心理变化，耐心倾听，做好安抚和解释工作，鼓励患者表达自己的感受和担忧，做好换药前后的心理疏导，说明尽管发生了并发症，但只要正确合理的处置，问题会得到有效的解决，由于护理中逐渐向预期的效果发展，有效地缓解了患者的不良情绪，促进了其对治疗的配合。

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