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本实验观察“副油箱”运动营养制剂对提高小白民运动能力的影响。发现服用“副油箱”制剂可延长小白鼠一次性游泳力竭的时间．用组织化学方法可见，服用本品的小白鼠肝糖原、肌糖原、骨骼肌琥珀酸脱氢酶（ＳＤＨａｓｅ）、钙激活的三磷腺苷酶（ＡＴＰａｓｅ）活性均高于对照组。 相似文献
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Cyril Schmit Jeanick Brisswalter 《International review of sport and exercise psychology》2020,13(1):21-39
ABSTRACT Despite emotional, technical and endurance implications for athletes’ performance, a consensus has yet to be reached to explain the impairment of executive functioning during exercise. In particular, recent research challenges the original assumption of a linear dose–response effect of exercise intensity on cerebral physiology and executive functioning. We propose a fatigue-based neurocognitive perspective of executive functioning during prolonged exercise, suggesting that top-down (cognitive and physical efforts) and bottom-up processes (body sensations) act in parallel of arousing mechanisms to determine cognitive outcomes. In this perspective, executive functioning during prolonged exercise would be dynamical rather than steady (i.e. positively then negatively impacted by exercise) and would be to analyse in regards of exercise termination rather than of exercise intensity. 相似文献
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现代图书馆职业倦怠现象探析 总被引：1，自引：0，他引：1
职业倦怠是每个在职人员特有的心理现象,图书馆作为服务性的机构,不可避免的存在这种现象,这严重影响到馆员和图书馆事业的发展。本文将从这种心理产生的原因、解决的方案两方面进行探讨。最后指出图书馆员应具有的心理素质。 相似文献
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Dropout stems from a complex, gradual process of decision-making in which the demands and benefits of university attendance are weighed. Early identification of at-risk students benefits from quick and large-scale screening instruments. This study presents the dimensionality of a screening instrument for students at risk of dropping out of Higher Education, integrating three scales: Academic Exhaustion, Satisfaction with Education and Dropout Intention. A sample of 611 first-year university students was considered in the statistical analysis. The results demonstrate evidence of internal and external validity as well as the reliability of the screening instrument scores. The differences in correlation coefficients between these three scales and the students’ intentions of completing the course and completing their education at their university, evaluated at two different points during the first semester, suggest that dropout analysis requires collecting information throughout the process of adjustment to higher education. 相似文献
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To examine the influence of pre-warming on the physiological responses to prolonged intermittent exercise in ambient temperatures of 21.5?±?0.6°C and relative humidities of 35.7?±?5.4% (mean?±?s), six healthy men performed intermittent treadmill running (30-s bouts at 90% of maximal oxygen uptake separated by 30-s static recovery periods) to exhaustion after active pre-warming, passive pre-warming and pre-exercise rest (control). Exercise time to exhaustion was significantly different between all conditions (active, 51.8?±?7.2?min; passive, 38.5?±?11.1?min; control, 72.0?±?17.2?min; P <?0.05). These changes in performance time were closely associated with a significant decline in both the rate of heat storage and heat storage capacity (P <?0.05). Rectal temperature, heart rate and ratings of perceived exertion were significantly higher during exercise in the two pre-warming conditions than in the control condition (P <?0.05). Ratings of perceived exertion were also significantly higher during exercise following passive pre-warming compared with active pre-warming (P <?0.05). During exercise there were no significant differences in serum prolactin, plasma norepinephrine and plasma free fatty acid concentrations between conditions. We conclude that both active and passive pre-warming promote a reduction in prolonged intermittent exercise capacity in environmental temperatures of 21°C compared with pre-exercise rest. These performance decrements were dependent upon the mode of pre-warming and closely reflected alterations in body heat content. 相似文献
6.
Joe Ayres Noelle Colby‐Rotell Paul Mark Wadleigh Tim Hopf 《Communication Research Reports》2013,30(1):86-93
The purpose of these studies was to develop an instrument to measure patients' perceived communication apprehension in patient/physician interactions. In the first stydy, a five item Patients' Report of Communication Apprehension with Physicians (PRCAP) was developed. The scale appears to be a reliable, unidimensional scale which shows a moderate positive correlation with the Personal Report of Communication Apprehension (PRCA), a moderate negative correlation with willingness to communicate (WTC), and a moderate negative correlation with self‐perceived communication competence (SPCC). In the second study, designed to assess the predictive validity of the PRCAP, those who scored one standard deviation above the mean on the PRCAP reported being less satisfied with their interactions with physicians than those who scored one standard deviation below the mean on the PRCAP. It appears the PRCAP is a reliable and valid instrument that can be employed to pursue issues involving the role of CA in patient/physician interactions. 相似文献
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Jan Wilke Johannes Fleckenstein Frieder Krause Lutz Vogt Winfried Banzer 《Sports biomechanics / International Society of Biomechanics in Sports》2016,15(2):151-161
Fatigue protocols have been used over the years to examine muscular exhaustion. As an alternative to approaches in laboratory settings, functional agility protocols claiming to mimic the multifaceted loads of athletic activity have been proposed. This study aimed to examine the effects of a functional agility short-term fatigue protocol (FAST-FP) on neuromuscular function. Twenty-eight healthy sports students (15 males, aged 24.3 ± 2.4 years) completed the FAST-FP, which consists of four components: three counter-movement jumps (90% of individual maximum), a 20-s bout of step-ups, three bodyweight squats and an agility run. Tasks were repeated until the participants no longer achieved the required jump height in two consecutive sets. Outcomes (pre-post) encompassed subjective exhaustion (visual analogue scale [VAS]), maximum isometric voluntary force of the knee extensors (MIVF), reactive strength index (RSI), mean power frequency (MPF, measured using surface electromyography) and maximum knee range of motion (ROM). Post-intervention, VAS (+54 mm) increased significantly, while MIVF (–6.1%), RSI (–10.7%) and MPF (–4.1%) were reduced (p < 0.05). No changes were observed for ROM (p > 0.05). The FAST-FP induces small-to-moderate impairments in neuromuscular function and considerable self-perceived fatigue. Current evidence on exhaustion developing in team sports suggests that this magnitude of fatigue is similar. The protocol might thus be valuable in the evaluation of treatments counteracting post-match fatigue in team sports. 相似文献
9.
许涛 《山东教育学院学报》2008,23(2):63-65
徐坤的小说,在90年代中后期更多的揭示都市职业女性的生存和精神困境。她笔下的都市职业女性一方面要挣脱家庭的羁绊,打破婚姻的禁锢,追求自由、平等的爱情,争取经济上的独立,追寻自我价值的实现。另一方面,又渴望着精神与情感的回归,渴望着男人的肩膀能够靠住女人的浪漫。这些作品对女性疲惫心态所作的文化上的透析,充分展示出徐坤对都市职业女性生存和精神困境体现出的人文关怀。 相似文献
10.
贵州省中学教师职业倦怠的现状研究 总被引：1，自引：0，他引：1
对464名贵州省中学教师的问卷调查发现:贵州省中学教师的职业倦怠整体上并不严重,但有相当比例的教师有比较明显的倦怠倾向;教师职业倦怠的发展随教龄的增加呈现出“两低中高”的发展趋势,教龄6-10年是职业倦怠最严重的阶段,在教师职业生涯的中期,教师的情感耗竭高于其个人成就感;性别、学历、职称、是否担任班主任、学校类型和地区分别对教师职业倦怠的一个或多个维度有显著影响。 相似文献