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排序方式: 共有210条查询结果,搜索用时 31 毫秒
71.
R Podstawski DJ Choszcz S Konopka J Klimczak M Starczewski 《Biology of sport / Institute of Sport》2014,31(4):315-321
The aim of the study was to evaluate anthropometric characteristics as determinants of 500 m rowing ergometer performance in physically inactive collegiate females. In this cross-sectional study, which included 196 collegiate females aged 19-23 years not participating in regular physical activities, body mass (BM), body height (BH), length of upper limbs (LA), length of lower limbs (LL), body mass index (BMI), slenderness index (SI), and the Choszcz-Podstawski index (CPI) were measured and a stepwise multiple regression analysis was performed. Participants performed 500 m maximal effort on a Concept II rowing ergometer. BM, BH, LA, LL, and the BMI, SI and CPI indices were found to be statistically significant determinants of 500 m performance. The best results (T) were achieved by females whose BH ranged from 170 to 180 cm, with LA and LL ranging from 75 to 80 cm and 85 to 90 cm, respectively. The best fitting statistical model was identified as: T = 11.6793 LR – 0.1130 LR2 – 0.0589 LN2 + 29.2157 CPI2 + 0.1370 LR·LN - 2.6926 LR·CPI – 211.7796. This study supports a need for additional studies focusing on understanding the importance of anthropometric differences in rowing ergometer performance, which could lead to establishing a better quality reference for evaluation of cardiorespiratory fitness tested using a rowing ergometer in collegiate females. 相似文献
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74.
大学生解脲脲原体和人型支原体正常携带状况研究 总被引:5,自引:2,他引:3
目的探讨解脲脲原体(Uu)和人型支原体(Mh)在大学生中的正常携带状况.方法采用培养法对314名未婚统招大学生和232名已婚成教大学生进行解脲脲原体和人型支原体的检测.结果未婚大学生和已婚大学生泌尿生殖道支原体检出率分别为12.10%和22.41%,后者明显高于前者(x2=10.31,P<0.005);已婚男、女大学生泌尿生殖道支原体检出率(分别为17.44%和27.78%)明显高于未婚男、女大学生检出率(分别为8.33%和16.44%,x2=5.84、4.77P<0.05).未婚男、女大学生之间泌尿生殖道支原体检出率差异有显著性(y2=4.82,P<0.05),而已婚男、女大学生之间泌尿生殖道支原体检出率差异无显著性(x2=3.34,P>0.05).已婚和未婚大学生泌尿生殖道支原体检出者中均以同时携带Uu和Mh较为常见.结论在校大学生中也有一部分人正常携带Uu和/或Mh,从他(她)们体内检出Uu和/或Mh一般不代表疾病状态. 相似文献
75.
试论大学生心理健康教育的四大误区 总被引:1,自引:0,他引:1
心理健康教育是大学生素质教育不可或缺的一部分,当前大学生心理健康教育存在着四大误区:标准误区、目标误区、操作误区和评价误区。这些误区制约着大学生心理健康教育的发展。高校要遵循教育规律,结合大学生的心理发展特点,正确把握心理健康的内涵,明确心理健康教育的目标,采用积极的评价方式,正确实施心理健康教育,方能走出误区,切实地促进大学生身心和谐发展和心理素质的全面提高。 相似文献
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77.
Bishanbindu Bandyopadhyay Haripada Chattopadhyay 《American journal of physical anthropology》1981,54(1):119-122
Male college students (N = 381) residing in several districts of Eastern India, classified into two groups, urban (N = 193) and rural (N = 188), were studied by anthropometric measurements of skinfold thicknesses in several sites of the body to determine their body fat content. The mean value of percentage of body fat was found to be significantly higher (P < 0.001) in the urban group of students (12.07 ± 3.04) than in the rurals (11.04 ± 2.63). The mean values of skinfold thicknesses of the biceps, triceps, and subscapular regions were also found to be higher in urbans (P < 0.01), but no such significant differences in mean values of supra-iliac and abdominal skinfolds were found between the two groups of students. Most of the subjects of both the groups had a greater thickness of the abdominal skinfold compared to thickness of the biceps, triceps, and suprailiac skinfolds. It was found that the college students of Eastern India were leaner than the youths of North America, Europe, Japan, and Northern India. 相似文献
78.
《Journal of biological education》2012,46(2):71-86
A model, based on commercially available beads, is described. The model enables many of the biochemical and chromosomal processes involved in the transmission of the genetic material to be easily and cheaply illustrated. 相似文献
79.
Maria Cristina Dos-Santos Nathália Matos-Gomes Marilise Katsurayama Maria Alice d’Ávila Becker Álvaro L. Bertho 《Cellular immunology》2009,260(1):39-43
Total leukocytes, NK cells, B and T lymphocytes present in the saliva of medical students with or without stress were quantified by flow cytometry in 10,000 events. The symptoms of psychological stress were monitored with Lipp’s Inventory of Stress Symptoms for Adults (ISSL). No significant differences were observed in the number of cells phenotyped in students with and those without psychological stress. However, a negative correlation was observed between the number of NK cells and T lymphocytes in students with stress (r = −0.8173; p = 0.0058), suggesting that innate immunity is predominant in the adaptation phase. 相似文献
80.
医学微生物学是医学院校各专业的一门重要基础课程,也是一门较难讲解的课程,针对留学生尤为如此。针对我校留学生在医学微生物学教学中出现的问题,在如何克服语言障碍、选择教材和教学内容、优化教学方法与手段、严格教学管理和考核制度等方面我们做了诸多尝试,现将我们的一些体会和经验与各位同仁共同探讨,以期提高留学生医学微生物学教学水平。 相似文献