目的系统评估妊娠期运动干预及Borg主观疲劳程度对预防妊娠期糖尿病(gestational diabetes mellitus,GDM)的有效性,为妊娠期运动管理提供参考。方法检索PubMed、Cochrane Library Central Register of Controlled Trails、EMBASE、Scopu...目的系统评估妊娠期运动干预及Borg主观疲劳程度对预防妊娠期糖尿病(gestational diabetes mellitus,GDM)的有效性,为妊娠期运动管理提供参考。方法检索PubMed、Cochrane Library Central Register of Controlled Trails、EMBASE、Scopus、中国知网和万方数据库,收集单纯运动对妊娠期妇女血糖控制和妊娠结局影响的随机对照试验。主要结局指标为GDM发病率,次要结局指标包括2 h口服葡萄糖耐量试验(2 hour oral glucose tolerance test,2 h OGTT)、妊娠期增重、终止妊娠孕周及新生儿体质量。利用R 4.0.2软件进行统计分析。通过Cochrane偏倚风险工具进行文献质量评价。结果共纳入14篇文献,4509名受试者。Meta分析结果显示,运动干预组GDM发病率(RR=0.74,95%CI=0.59~0.93,P<0.01),2 h OGTT(MD=-0.27,95%CI=-0.48~-0.07,P<0.01),妊娠期增重(MD=-1.04,95%CI=-1.91~-0.18,P=0.02)均低于未运动组;而新生儿体质量(MD=-27.43,95%CI=-58.77~3.92,P=0.09)、终止妊娠孕周(MD=-0.18,95%CI=-0.93~0.57,P=0.64)与未运动组差异无统计学意义。亚组分析结果显示,运动强度Borg主观疲劳程度量表评分高于12分(RR=0.64,95%CI=0.46~0.89,P<0.01),运动以团体方式进行(RR=0.66,95%CI=0.46~0.94,P=0.02),由健身专家组织开展(RR=0.73,95%CI=0.56~0.95,P=0.02)均有利于降低GDM发病率。此外,Meta回归结果显示,每周运动总时间大于2 h(相关系数=-1.06,95%CI=-1.86~-0.27,P<0.01)是研究异质性的主要来源。结论妊娠期间进行运动干预,且Borg主观疲劳程度量表评分大于12分对降低GDM发病率有良好效果。展开更多
Background:The validity and reliability of the Borg 6–20 rating of perceived exertion(RPE)scale has not been tested among Chinese people from China' Mainland.The purpose of this study was to test:1)The validity o...Background:The validity and reliability of the Borg 6–20 rating of perceived exertion(RPE)scale has not been tested among Chinese people from China' Mainland.The purpose of this study was to test:1)The validity of Leung Chinese version and Wang Chinese version of the Borg 6–20 RPE scale;2)The reliability of Wang Chinese version RPE scale;and 3)The agreement of these two Chinese versions of the RPE scale among young healthy adults from China' Mainland.Methods:A total of 26 subjects(11 males,15 females;age 22.7±3.0 yrs)volunteered to participate.They performed one(n=3),two(n=14),or three trials(n=9)of the Bruce treadmill protocol test within 9.0±5.1 days(validation trials),and 30.4±27.9 days(reliability trials).Power output,heart rate,oxygen consumption,and RPE were recorded.Results:RPE was significantly correlated with power output(Leung version rs≥0.75,Wang version rs≥0.73),heart rate(HR)(Leung version rs≥0.84,Wang version rs≥0.87),and oxygen consumption(VO2)(Leung version rs≥0.80,Wang version rs≥0.81)(all p<0.01).The overall test-retest interclass correlation was 0.94(p<0.01).No significant differences in correlations(RPE against power output,HR and VO_(2))between trials existed for the reliability tests of Wang version scale.No significant differences in correlations(RPE against power output,HR and VO_(2))between the two Chinese versions of RPE scale existed.Conclusion:Both Chinese RPE scales are valid among young healthy Chinese mandarin speaking adults.The Wang scale is reliable,and the Leung and Wang scales show superior agreement with each other.展开更多
目的探讨表面肌电和心电技术评价不同手工搬举下腰背部竖脊肌的劳动负荷,以期获得最佳搬举技术。方法30名大学生志愿者在实验室模拟手工搬举作业,分别测定和分析蹲举、背举和半蹲举的左、右侧胸10水平竖脊肌(LT10、RT10)和腰3水平竖脊肌...目的探讨表面肌电和心电技术评价不同手工搬举下腰背部竖脊肌的劳动负荷,以期获得最佳搬举技术。方法30名大学生志愿者在实验室模拟手工搬举作业,分别测定和分析蹲举、背举和半蹲举的左、右侧胸10水平竖脊肌(LT10、RT10)和腰3水平竖脊肌(LL3、RL3)表面肌电、心率和Borg量表分值的变化情况。结果3种搬举技术下,男性LT10、RT10和女性LL3、RL3竖脊肌表面肌电幅度均方根值的最大随意收缩百分比(percentage of maximum voluntary electrical activation,MVE%)均较休息时高(P<0.05)。男性LT10、LL3和女性RT10、LT10的MVE%在蹲举时最高(P<0.05)。女性RL3的MVE%在半蹲举时最低(P<0.05),而女性LL3的MVE%在背举时最低(P<0.05)。男性LT10和女性LT10、LL3的中位频率(MF)均高于休息时的值(P<0.05),而男性、女性RL3的MF值均低于休息时的值(P<0.05)。3种搬举技术下,男性、女性的MF值无统计学意义。与休息时比较,3种搬举技术下,男性、女性心率均高于休息时的值(P<0.05)。男性、女性在背举时心率最低(P<0.05),蹲举时心率最高(P<0.05)。3种搬举技术下,Borg量表分值无统计学意义。结论相同搬举负荷时,蹲举是不推荐的搬举。尽管背举时肌肉和心血管应激程度较低,但是竖脊肌薄,在生物力学上力矩短,我们不提倡使用它来搬举重物。基于上述原因,我们认为半蹲举是一种适宜的搬举技术,此时肌肉和心血管应激处于较低水平。展开更多
Background:Position intervention has been shown to improve oxygenation,but its role in non-invasively ventilated patients with severe COVID-19 has not been assessed.The objective of this study was to investigate the e...Background:Position intervention has been shown to improve oxygenation,but its role in non-invasively ventilated patients with severe COVID-19 has not been assessed.The objective of this study was to investigate the efficacy of early position intervention on non-invasively ventilated patients with severe COVID-19.Methods:This was a single-center,prospective observational study in consecutive patients with severe COVID-19 managed in a provisional ICU at Renmin Hospital of Wuhan University from 31 January to 15 February 2020.Patients with chest CT showing exudation or consolidation in bilateral peripheral and posterior parts of the lungs were included.Early position intervention(prone or lateral)was commenced for>4 hours daily for 10 days in these patients,while others received standard care.Results:The baseline parameters were comparable between the position intervention group(n=17)and the standard care group(n=35).Position intervention was well-tolerated and increased cumulative adjusted mean difference of SpO_(2)/FiO_(2)(409,95%CI 86 to 733)and ROX index(26,95%CI 9 to 43)with decreased Borg scale(−9,95%CI−15 to−3)during the first 7 days.It also facilitated absorption of lung lesions and reduced the proportion of patients with high National Early Warning Score 2(≥7)on days 7 and 14,with a trend toward faster clinical improvement.Virus shedding and length of hospital stay were comparable between the two groups.Conclusions:This study provides the first evidence for improved oxygenation and lung lesion absorption using early position intervention in non-invasively ventilated patients with severe COVID-19,and warrants further randomized trials.展开更多
The Karvonen formula, which is widely used to estimate exercise intensity, contains maximum heart rate, H Rmax, as a variable. This study employed pedaling experiments to assess which of the proposed formulas for calc...The Karvonen formula, which is widely used to estimate exercise intensity, contains maximum heart rate, H Rmax, as a variable. This study employed pedaling experiments to assess which of the proposed formulas for calculating H Rmaxwas the most suitable for use with the Karvonen formula. First, two kinds of experiments involving an ergometer were performed: an all-in-one-day experiment that tested eight pedaling loads in one day, and a one-load-per-day experiment that tested one load per day for eight days.A comparison of the data on 7 subjects showed that the all-in-one-day type of experiment was better for assessing H Rmaxformulas,at least for the load levels tested in our experiments. A statistical analysis of the experimental data on 47 subjects showed two of the H Rmaxformulas to be suitable for use in the Karvonen formula to estimate exercise intensity for males in their 20 s. In addition, the physical characteristics of a person having the greatest impact on exercise intensity were determined.展开更多
文摘Background:The validity and reliability of the Borg 6–20 rating of perceived exertion(RPE)scale has not been tested among Chinese people from China' Mainland.The purpose of this study was to test:1)The validity of Leung Chinese version and Wang Chinese version of the Borg 6–20 RPE scale;2)The reliability of Wang Chinese version RPE scale;and 3)The agreement of these two Chinese versions of the RPE scale among young healthy adults from China' Mainland.Methods:A total of 26 subjects(11 males,15 females;age 22.7±3.0 yrs)volunteered to participate.They performed one(n=3),two(n=14),or three trials(n=9)of the Bruce treadmill protocol test within 9.0±5.1 days(validation trials),and 30.4±27.9 days(reliability trials).Power output,heart rate,oxygen consumption,and RPE were recorded.Results:RPE was significantly correlated with power output(Leung version rs≥0.75,Wang version rs≥0.73),heart rate(HR)(Leung version rs≥0.84,Wang version rs≥0.87),and oxygen consumption(VO2)(Leung version rs≥0.80,Wang version rs≥0.81)(all p<0.01).The overall test-retest interclass correlation was 0.94(p<0.01).No significant differences in correlations(RPE against power output,HR and VO_(2))between trials existed for the reliability tests of Wang version scale.No significant differences in correlations(RPE against power output,HR and VO_(2))between the two Chinese versions of RPE scale existed.Conclusion:Both Chinese RPE scales are valid among young healthy Chinese mandarin speaking adults.The Wang scale is reliable,and the Leung and Wang scales show superior agreement with each other.
文摘目的探讨表面肌电和心电技术评价不同手工搬举下腰背部竖脊肌的劳动负荷,以期获得最佳搬举技术。方法30名大学生志愿者在实验室模拟手工搬举作业,分别测定和分析蹲举、背举和半蹲举的左、右侧胸10水平竖脊肌(LT10、RT10)和腰3水平竖脊肌(LL3、RL3)表面肌电、心率和Borg量表分值的变化情况。结果3种搬举技术下,男性LT10、RT10和女性LL3、RL3竖脊肌表面肌电幅度均方根值的最大随意收缩百分比(percentage of maximum voluntary electrical activation,MVE%)均较休息时高(P<0.05)。男性LT10、LL3和女性RT10、LT10的MVE%在蹲举时最高(P<0.05)。女性RL3的MVE%在半蹲举时最低(P<0.05),而女性LL3的MVE%在背举时最低(P<0.05)。男性LT10和女性LT10、LL3的中位频率(MF)均高于休息时的值(P<0.05),而男性、女性RL3的MF值均低于休息时的值(P<0.05)。3种搬举技术下,男性、女性的MF值无统计学意义。与休息时比较,3种搬举技术下,男性、女性心率均高于休息时的值(P<0.05)。男性、女性在背举时心率最低(P<0.05),蹲举时心率最高(P<0.05)。3种搬举技术下,Borg量表分值无统计学意义。结论相同搬举负荷时,蹲举是不推荐的搬举。尽管背举时肌肉和心血管应激程度较低,但是竖脊肌薄,在生物力学上力矩短,我们不提倡使用它来搬举重物。基于上述原因,我们认为半蹲举是一种适宜的搬举技术,此时肌肉和心血管应激处于较低水平。
基金This work was supported by the National Key Development Plan for Precision Medicine Research(Grant No.2017YFC0910004)Sichuan Science and Technology Project(Grants No.2020YFS0005 and 2020YFS0009)the 1.3.5 Project for Disciplines of Excellence–Clinical Research Incubation Project,West China Hospital,Sichuan University(Grant No.ZYJC18001).
文摘Background:Position intervention has been shown to improve oxygenation,but its role in non-invasively ventilated patients with severe COVID-19 has not been assessed.The objective of this study was to investigate the efficacy of early position intervention on non-invasively ventilated patients with severe COVID-19.Methods:This was a single-center,prospective observational study in consecutive patients with severe COVID-19 managed in a provisional ICU at Renmin Hospital of Wuhan University from 31 January to 15 February 2020.Patients with chest CT showing exudation or consolidation in bilateral peripheral and posterior parts of the lungs were included.Early position intervention(prone or lateral)was commenced for>4 hours daily for 10 days in these patients,while others received standard care.Results:The baseline parameters were comparable between the position intervention group(n=17)and the standard care group(n=35).Position intervention was well-tolerated and increased cumulative adjusted mean difference of SpO_(2)/FiO_(2)(409,95%CI 86 to 733)and ROX index(26,95%CI 9 to 43)with decreased Borg scale(−9,95%CI−15 to−3)during the first 7 days.It also facilitated absorption of lung lesions and reduced the proportion of patients with high National Early Warning Score 2(≥7)on days 7 and 14,with a trend toward faster clinical improvement.Virus shedding and length of hospital stay were comparable between the two groups.Conclusions:This study provides the first evidence for improved oxygenation and lung lesion absorption using early position intervention in non-invasively ventilated patients with severe COVID-19,and warrants further randomized trials.
基金supported by Health Science Center Foundation,Japan
文摘The Karvonen formula, which is widely used to estimate exercise intensity, contains maximum heart rate, H Rmax, as a variable. This study employed pedaling experiments to assess which of the proposed formulas for calculating H Rmaxwas the most suitable for use with the Karvonen formula. First, two kinds of experiments involving an ergometer were performed: an all-in-one-day experiment that tested eight pedaling loads in one day, and a one-load-per-day experiment that tested one load per day for eight days.A comparison of the data on 7 subjects showed that the all-in-one-day type of experiment was better for assessing H Rmaxformulas,at least for the load levels tested in our experiments. A statistical analysis of the experimental data on 47 subjects showed two of the H Rmaxformulas to be suitable for use in the Karvonen formula to estimate exercise intensity for males in their 20 s. In addition, the physical characteristics of a person having the greatest impact on exercise intensity were determined.
文摘目的评价健康干预对上海市浦东新区社区轻中度慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者运动能力的影响。方法从上海市浦东新区所有社区中随机整群抽样抽取10个社区并分为干预组和对照组,将所有在册轻中度COPD患者作为调查对象,进行面对面的问卷调查收集基本资料。6个月内针对干预组进行多次健康干预活动,并在干预前后利用六分钟步行试验(six-minute walk test,6MWT)和Borg主观体力感等级量表评分评价COPD患者的运动能力。使用秩和检验与双重差分(difference in difference,DID)分析模型比较健康干预前后干预组与对照组步行距离和各项评分差值的差异。结果调整相关协变量后男性组、女性组、整体人群步行距离的前后差异均无统计学意义(均有P>0.05);干预组呼吸困难评分差值、疲劳评分差值均大于对照组且差异均有统计学意义(Z_(1)=-4.636,P_(1)<0.001;Z_(2)=-4.912,P_(2)<0.001);调整相关协变量后男性呼吸困难评分、疲劳评分和女性疲劳评分的前后差异均为负(均有P<0.05)。结论健康干预措施缓解了轻中度COPD患者呼吸困难和疲劳状况,提高了上海市浦东新区社区轻中度COPD患者运动能力。
