Predefined vs data-guided training prescription based on autonomic nervous system variation: A systematic review

Monitoring variations in the functioning of the autonomic nervous system may help personalize training of runners and provide more pronounced physiological adaptations and performance improvements. We systematically reviewed the scientific literature comparing physiological adaptations and/or improvements in performance following training based on responses of the autonomic nervous system (ie, changes in heart rate variability) and predefined training. PubMed, SPORTDiscus, and Web of Science were searched systematically in July 2019. Keywords related to endurance, running, autonomic nervous system, and training. Studies were included if they (a) involved interventions consisting predominantly of running training; (b) lasted at least 3 weeks; (c) reported pre- and post-intervention assessment of running performance and/or physiological parameters; (d) included an experimental group performing training adjusted continuously on the basis of alterations in HRV and a control group; and (e) involved healthy runners. Five studies involving six interventions and 166 participants fulfilled our inclusion criteria. Four HRV-based interventions reduced the amount of moderate- and/or high-intensity training significantly. In five interventions, improvements in performance parameters (3000 m, 5000 m, Loadmax, Tlim) were more pronounced following HRV-based training. Peak oxygen uptake () and submaximal running parameters (eg, LT1, LT2) improved following both HRV-based and predefined training, with no clear difference in the extent of improvement in . Submaximal running parameters tended to improve more following HRV-based training. Research findings to date have been limited and inconsistent. Both HRV-based and predefined training improve running performance and certain submaximal physiological adaptations, with effects of the former training tending to be greater.     

Are primary care physicians ill equipped to evaluate and treat childhood physical inactivity?

ABSTRACT

Objective

To investigate primary care physician clinical practice patterns, barriers, and education surrounding pediatric physical activity (PA), and to compare practice patterns by discipline.     

医药院校大学生媒介素养教育探究

在现代传媒背景下，媒介素养水平高低直接影响着医药专业人才的培养质量和未来我国医药卫生事业发展。本文探讨国内外媒介素养教育开展情况，分析医药院校大学生媒介素养教育的必要性，提出了在医药院校加强媒介素养教育的新思路。     

An Environmental Scan of the National and Provincial Diagnostic Reference Levels in Canada for Common Adult Computed Tomography Scans

Several regulatory bodies have agreed that low-dose radiation used in medical imaging is a weak carcinogen that follows a linear, non-threshold model of cancer risk. While avoiding radiation is the best course of action to mitigate risk, computed tomography (CT) scans are often critical for diagnosis. In addition to the as low as reasonably achievable principle, a more concrete method of dose reduction for common CT imaging exams is the use of a diagnostic reference level (DRL). This paper examines Canada's national DRL values from the recent CT survey and compares it to published provincial DRLs as well as the DRLs in the United Kingdom and the United States of America for the 3 most common CT exams: head, chest, and abdomen/pelvis. Canada compares well on the international scale, but it should consider using more electronic dose monitoring solutions to create a culture of dose optimization.     

痛风患者的健康素养：一项关于东北地区中青年患者的质性研究

背景　痛风是一种代谢性疾病，可以并发肾、心脑血管等多器官疾病，目前痛风发病和预后的影响因素已经得到揭示，但鲜有通过质性研究方法全面评估痛风患者的疾病认知和健康素养状态。目的　探讨东北地区中青年痛风患者的健康素养，并了解痛风患者的一般感知能力及知识需求状况，为增强我国痛风患者的健康素养水平，改善其自身管理能力、提高痛风患者的生活质量提供理论依据。方法　招募2017年3月-2018年3月于大庆油田总医院、大庆市人民医院、大庆市第五医院3家医院确诊为痛风的中青年患者，信息饱和后停止招募，共招募13例患者。采用非结构式与半结构式访谈相结合的方式对患者资料进行收集，采用Colaizzi的现象学资料分析方法进行分析。结果　对访谈资料进行分析，提炼如下主题：痛风患者的疾病感知能力〔包括对痛风的认知及知晓情况较差；严重的疼痛可影响痛风患者的生活质量；自我感知导致疾病发作或加重的原因为饮食习惯及生活方式等〕、就诊状况及行为（包括首次发病对疾病认识缺乏；就医体验不良）、痛风药物管理计划（包括药物选择依从性低、治疗方案的知晓及应对差）、痛风非药物管理计划（包括生活方式的调整、社会资源互动、疾病信息挖掘）。结论　东北地区中青年痛风患者健康素养水平较低，对疾病相关信息获取途径单一，对疾病和治疗判断片面，因此不能有效进行疾病管理，阻碍医疗决策制定。提示根据需求状况、针对具体薄弱环节提升痛风患者的健康素养、提高知识水平对改善患者健康结局很有必要。     

影响儿童语言和识字能力的研究进展

现代生活中 ,儿童的语言和识字受家庭认知环境的影响。近年来无论从流行病学的研究 ,还是干预或神经生物的研究 ,均证实儿童早期经验是日后语言和识字能力发展的基础。在早期经验中 ,最关键的是父母与孩子之间的语言交流。通过这样的交流 ,促进儿童早期的语言发育 ,也促进儿童学龄期的阅读理解。儿童保健医生处于独特的位置 ,即在常规保健中指导父母根据不同年龄儿童的发育水平 ,应用有关的技能技巧 ,促进儿童的语言和识字。     

Depression and mental health in neoliberal times: A critical analysis of policy and discourse

Depression has received increasing attention as a significant public health issue over the past ten years, both in Canada and elsewhere in the industrialized west. During the same period, many of the social and economic policies adopted by governments in these jurisdictions have reflected neoliberal goals and orientations. The purpose of this article is to explore the points of contact between these two features of contemporary social and political life in the industrialized west, using the Canadian province of British Columbia as an empirical site. My analysis draws on the Foucauldian literature on governmentality in presenting a close reading of provincial government documents concerned with depression and mental health literacy that have been produced since the election of the Liberal Party to office in British Columbia in 2001. This analysis identifies discourses of “responsibilization” circulating in these documents, within which individuals, families, communities and workplaces – rather than publicly-funded services – appear as key resources in responding to experiences of mental distress. It also points to a number of strategies visible in the documents that work to align the interests of individuals and their practitioners in pursuing particular approaches to treatment with a governing interest in reducing public spending on services and supports. The article concludes by identifying a number of resistive discourses and proposing further research in a range of empirical contexts within which they may be evident.