Hypertension, obesity, smoking, dyslipidemia, and type 2 diabetes (T2D) are the major risk factors for developing cardiovascular diseases (CVD). Recent studies revealed that taxi-motorbike drivers (TMDs) in Cotonou ha...Hypertension, obesity, smoking, dyslipidemia, and type 2 diabetes (T2D) are the major risk factors for developing cardiovascular diseases (CVD). Recent studies revealed that taxi-motorbike drivers (TMDs) in Cotonou had higher rates of CVD risk factors, but their impacts on cardiovascular events have rarely been studied. The Framingham risk score (FRS) is an algorithm that considers CVD risk factors and estimates the risk of developing CVD in the next 10 years. Our objectives were to assess the 10-year CVD risk predicted by the FRS, and to examine the relationships of 10-year CVD risk with plasma iron and potassium levels among TMDs. We included 134 TMDs (22 - 59 years old) who had no prior diagnosis of CVD or T2D, and not taking medications affecting iron and potassium homeostasis. Conventional cardiovascular risk factors were used to calculate the 10-year CVD risk, which was categorized as low (20%). FRS > 2%, which corresponded to the 75th percentile of FRS distribution in our study population, was used as a cut-off value to classify participants into two groups. Plasma iron and potassium levels were segregated into tertiles and their associations with 10-year CVD risk were quantified by multivariate-adjusted logistic regression to calculate the odd ratios (ORs) to being above the 75<sup>th</sup> percentile of 10-year CVD risk with the corresponding 95% confidence intervals (CIs). We found that 62.0% of participants had at least one of cardiovascular risk factors. Approximately 97.8% of TMDs had 10-year CVD risk 4.8 mmol/L led to an 83% risk reduction of having 10-year CVD risk > 2% (OR = 0.17, 95% CI: 0.04 - 0.82, P = 0.027). In conclusion, our findings showed that high plasma potassium levels associate with reduced 10-year CVD risk among TMDs. Interventions focused on monitoring of plasma potassium, particularly in those with existing cardiovascular risk factors, may help prevent CVD.展开更多
Objective The study aims to predict 10-year cardiovascular disease(CVD)risk and explore its association with sleep duration among Chinese urban adults.Methods We analyzed part of the baseline data of a cohort that rec...Objective The study aims to predict 10-year cardiovascular disease(CVD)risk and explore its association with sleep duration among Chinese urban adults.Methods We analyzed part of the baseline data of a cohort that recruited adults for health screening by cluster sampling.The simplified Pittsburgh Sleep Quality Index(PSQI)and Framingham 10-year risk score(FRS)were used to measure sleep duration and CVD risk.Demographic characteristics,personal history of chronic diseases,lifestyle factors were collected using a questionnaire.Height,weight,total cholesterol(TC),and high-density lipoprotein cholesterol(HDL-C)were also measured.Multiple logistic regression models were performed to explore the association of sleep duration with the predicted CVD risk.Results We included 31,135 participants(median age 44 years,53.02%males)free of CVD,cerebral stroke,and not taking lipid-lowering agents.Overall,14.05%,and 25.55%of participants were at medium and high predicted CVD risk,respectively.Short sleep was independently associated with increased odds of medium to high risk of predicted 10-year CVD among males(OR=1.10;95%CI:1.01–1.19)and increased odds of medium to high and high risk of predicted 10-year CVD among females(OR=1.23;95%CI:1.08–1.40;OR=1.27;95%CI:1.11–1.44).In contrast,long sleep had no association with cardiovascular risk.Conclusion A substantial number of adults free of CVD were at high 10-year CVD risk.Short sleep was associated with increased odds of predicted CVD risk.展开更多
为探讨中高林龄杨树(Populus)光合生理特性对不同修枝强度的响应规律,以10年生三倍体毛白杨(triploid Populus tomentosa)无性系B301与S86为研究对象,采用轻度修枝(修去树冠下部1/3枝条)和重度修枝(修去树冠下部1/2枝条),以及未修枝杨...为探讨中高林龄杨树(Populus)光合生理特性对不同修枝强度的响应规律,以10年生三倍体毛白杨(triploid Populus tomentosa)无性系B301与S86为研究对象,采用轻度修枝(修去树冠下部1/3枝条)和重度修枝(修去树冠下部1/2枝条),以及未修枝杨树为对照,研究不同强度修枝对10年生毛白杨生长和生理特性的影响。结果表明:对于10年生中高龄杨树,修枝对树高、胸径、材积增长率无显著影响,但重度修枝能提高剩余叶片的净光合速率(P_(n))、蒸腾速率(T_(r))、气孔导度(G_(s)),增强单叶水平上物质合成的能力,而修枝对瞬时水分利用效率(WUE)影响不显著。从生长和光合角度综合分析,修去树冠下部1/2枝条能够改善10年生毛白杨生理状况,但对林木生长无明显促进作用。展开更多
本文运用文献资料法、实验法、数理统计法,探究呼吸肌训练(Respiratory Muscle Training RMT)对6-10岁业余游泳儿童少年呼吸机能、有氧耐力及运动成绩影响研究。具体为60名实验对象,在12周的训练中,实验前后,分别测两组台阶指数、肺活...本文运用文献资料法、实验法、数理统计法,探究呼吸肌训练(Respiratory Muscle Training RMT)对6-10岁业余游泳儿童少年呼吸机能、有氧耐力及运动成绩影响研究。具体为60名实验对象,在12周的训练中,实验前后,分别测两组台阶指数、肺活量、安静心率、憋气时长及专项运动成绩共5项指标。结果表明,12周的RMT,实验组儿童少年的肺活量和憋气时长与对照组比较,有着极显著提高(P<0.01);实验组各项指标与训练前相比,均有极显著提高(P<0.01)。结论:实验组和对照组呼吸机能、有氧耐力和专项运动成绩均有提高,实验组相比对照组的憋气时长和肺活量提高更为显著。提示,呼吸肌训练法与传统训练方法结合使用,能够更为显著的提高游泳训练儿童的呼吸肌机能,从而提高机体氧供能力。展开更多
文摘Hypertension, obesity, smoking, dyslipidemia, and type 2 diabetes (T2D) are the major risk factors for developing cardiovascular diseases (CVD). Recent studies revealed that taxi-motorbike drivers (TMDs) in Cotonou had higher rates of CVD risk factors, but their impacts on cardiovascular events have rarely been studied. The Framingham risk score (FRS) is an algorithm that considers CVD risk factors and estimates the risk of developing CVD in the next 10 years. Our objectives were to assess the 10-year CVD risk predicted by the FRS, and to examine the relationships of 10-year CVD risk with plasma iron and potassium levels among TMDs. We included 134 TMDs (22 - 59 years old) who had no prior diagnosis of CVD or T2D, and not taking medications affecting iron and potassium homeostasis. Conventional cardiovascular risk factors were used to calculate the 10-year CVD risk, which was categorized as low (20%). FRS > 2%, which corresponded to the 75th percentile of FRS distribution in our study population, was used as a cut-off value to classify participants into two groups. Plasma iron and potassium levels were segregated into tertiles and their associations with 10-year CVD risk were quantified by multivariate-adjusted logistic regression to calculate the odd ratios (ORs) to being above the 75<sup>th</sup> percentile of 10-year CVD risk with the corresponding 95% confidence intervals (CIs). We found that 62.0% of participants had at least one of cardiovascular risk factors. Approximately 97.8% of TMDs had 10-year CVD risk 4.8 mmol/L led to an 83% risk reduction of having 10-year CVD risk > 2% (OR = 0.17, 95% CI: 0.04 - 0.82, P = 0.027). In conclusion, our findings showed that high plasma potassium levels associate with reduced 10-year CVD risk among TMDs. Interventions focused on monitoring of plasma potassium, particularly in those with existing cardiovascular risk factors, may help prevent CVD.
基金the National Key R&D Program in the Thirteenth Five-year Plan from the Chinese Ministry of Science and Technology[No.2016YFC0900600,2016YFC0900604]。
文摘Objective The study aims to predict 10-year cardiovascular disease(CVD)risk and explore its association with sleep duration among Chinese urban adults.Methods We analyzed part of the baseline data of a cohort that recruited adults for health screening by cluster sampling.The simplified Pittsburgh Sleep Quality Index(PSQI)and Framingham 10-year risk score(FRS)were used to measure sleep duration and CVD risk.Demographic characteristics,personal history of chronic diseases,lifestyle factors were collected using a questionnaire.Height,weight,total cholesterol(TC),and high-density lipoprotein cholesterol(HDL-C)were also measured.Multiple logistic regression models were performed to explore the association of sleep duration with the predicted CVD risk.Results We included 31,135 participants(median age 44 years,53.02%males)free of CVD,cerebral stroke,and not taking lipid-lowering agents.Overall,14.05%,and 25.55%of participants were at medium and high predicted CVD risk,respectively.Short sleep was independently associated with increased odds of medium to high risk of predicted 10-year CVD among males(OR=1.10;95%CI:1.01–1.19)and increased odds of medium to high and high risk of predicted 10-year CVD among females(OR=1.23;95%CI:1.08–1.40;OR=1.27;95%CI:1.11–1.44).In contrast,long sleep had no association with cardiovascular risk.Conclusion A substantial number of adults free of CVD were at high 10-year CVD risk.Short sleep was associated with increased odds of predicted CVD risk.
文摘为探讨中高林龄杨树(Populus)光合生理特性对不同修枝强度的响应规律,以10年生三倍体毛白杨(triploid Populus tomentosa)无性系B301与S86为研究对象,采用轻度修枝(修去树冠下部1/3枝条)和重度修枝(修去树冠下部1/2枝条),以及未修枝杨树为对照,研究不同强度修枝对10年生毛白杨生长和生理特性的影响。结果表明:对于10年生中高龄杨树,修枝对树高、胸径、材积增长率无显著影响,但重度修枝能提高剩余叶片的净光合速率(P_(n))、蒸腾速率(T_(r))、气孔导度(G_(s)),增强单叶水平上物质合成的能力,而修枝对瞬时水分利用效率(WUE)影响不显著。从生长和光合角度综合分析,修去树冠下部1/2枝条能够改善10年生毛白杨生理状况,但对林木生长无明显促进作用。
文摘本文运用文献资料法、实验法、数理统计法,探究呼吸肌训练(Respiratory Muscle Training RMT)对6-10岁业余游泳儿童少年呼吸机能、有氧耐力及运动成绩影响研究。具体为60名实验对象,在12周的训练中,实验前后,分别测两组台阶指数、肺活量、安静心率、憋气时长及专项运动成绩共5项指标。结果表明,12周的RMT,实验组儿童少年的肺活量和憋气时长与对照组比较,有着极显著提高(P<0.01);实验组各项指标与训练前相比,均有极显著提高(P<0.01)。结论:实验组和对照组呼吸机能、有氧耐力和专项运动成绩均有提高,实验组相比对照组的憋气时长和肺活量提高更为显著。提示,呼吸肌训练法与传统训练方法结合使用,能够更为显著的提高游泳训练儿童的呼吸肌机能,从而提高机体氧供能力。
