目的:通过Meta分析综合定量评价低容量高强度间歇训练对预防肥胖或超重人群心血管疾病的效果,进一步验证低容量高强度间歇训练在肥胖等特殊人群中应用的可行性。方法:在中国知网、PubMed、Web of Science、Cochrane Library和EBSCO-SPO...目的:通过Meta分析综合定量评价低容量高强度间歇训练对预防肥胖或超重人群心血管疾病的效果,进一步验证低容量高强度间歇训练在肥胖等特殊人群中应用的可行性。方法:在中国知网、PubMed、Web of Science、Cochrane Library和EBSCO-SPORTD运动科学全文数据库检索关于低容量高强度间歇训练相关研究的随机对照试验文献,检索时限为各数据库建库至2024年2月。由2名研究人员对所纳入的研究进行筛选、质量评价和数据提取,采用RevMan 5.4和Stata 17.0软件对结局指标进行Meta分析,包括合并效应量、亚组分析、Leave-One-Out敏感性分析以及发表Egger检验和绘制漏斗图。该方案已在国际系统综述前瞻性注册中心注册(CRD42024534409)。结果:①最终筛选纳入符合要求的13项随机对照试验,共包含349例受试者,纳入文献整体质量较高。②低容量高强度间歇训练干预对心肺适能(SMD=-0.65,95%CI:-0.87至-0.43,P<0.05)、收缩压(SMD=0.38,95%CI:0.11-0.65,P<0.05)、舒张压(SMD=0.42,95%CI:0.15-0.68,P<0.05)和体脂百分比(SMD=0.25,95%CI:0.02-0.49,P<0.05)4项指标具有改善效果。③低容量高强度间歇训练与中等强度持续训练相比在改善超重或肥胖人群心肺适能、收缩压、舒张压、体脂百分比、标准体质量、体质量指数、高密度脂蛋白、低密度脂蛋白和总胆固醇指标方面干预效果相似(P>0.05),但在改善三酰甘油效果方面中等强度持续训练优于低容量高强度间歇训练(SMD=-0.30,95%CI:-0.57至-0.02,P<0.05)。④亚组分析结果进一步显示,低容量高强度间歇训练和中等强度持续训练干预对各项指标的改善效果相似。结论:当前证据表明,低容量高强度间歇训练可以有效提升超重或肥胖人群的心肺适应能力以及促进减脂和血压调控,且改善效果与中等强度持续训练相似。短时间的低容量高强度间歇训练相比于长时间的中等强度持续训练更具有时间效益。建议未来通过更多研究确定适用于超重或肥胖人群最佳的低容量高强度间歇训练运动处方。展开更多
The biomass and productivity of Schima superba-Castanopsis carlesii forests in Tiantong,Zhejiang Province,were determined using overlapping quadrants and stem analyses.The total community biomass was(225.3±30.1) ...The biomass and productivity of Schima superba-Castanopsis carlesii forests in Tiantong,Zhejiang Province,were determined using overlapping quadrants and stem analyses.The total community biomass was(225.3±30.1) t hm-2,of which the aboveground parts accounted for 72.0% and the underground parts accounted for 28.0%.About 87.2% of biomass existed in the tree layer.The resprouting biomass was small,of which over 95.0% occurred in the shrub layer.The productivity of the aboveground parts of the community was(386.8±98.9) g m-2a-1,in which more than 96.0% was present at the tree level.The trunk's contribution to productivity was the greatest,while that of leaves was the smallest.In China,the community biomass of subtropical evergreen broadleaved forests differs significantly with the age of the forest.The community biomass of the 52-year-old S.superba-C.carlesii forests in this study was lower than the average biomass of subtropical evergreen broadleaved forests in China,and was lower than the biomass of other subtropical evergreen broadleaved forests elsewhere in the world.Moreover,its productivity was lower than the model estimate,indicating that without disturbance,this community has great developmental potential in terms of community biomass and productivity.展开更多
基金supported by the National Key Basic Research and Development Program of China (Grant No. G2000046801)the National Natural Science Foundation of China (Grant No. 30130060 )the A3 Foresight Program Project (NSFC)
文摘The biomass and productivity of Schima superba-Castanopsis carlesii forests in Tiantong,Zhejiang Province,were determined using overlapping quadrants and stem analyses.The total community biomass was(225.3±30.1) t hm-2,of which the aboveground parts accounted for 72.0% and the underground parts accounted for 28.0%.About 87.2% of biomass existed in the tree layer.The resprouting biomass was small,of which over 95.0% occurred in the shrub layer.The productivity of the aboveground parts of the community was(386.8±98.9) g m-2a-1,in which more than 96.0% was present at the tree level.The trunk's contribution to productivity was the greatest,while that of leaves was the smallest.In China,the community biomass of subtropical evergreen broadleaved forests differs significantly with the age of the forest.The community biomass of the 52-year-old S.superba-C.carlesii forests in this study was lower than the average biomass of subtropical evergreen broadleaved forests in China,and was lower than the biomass of other subtropical evergreen broadleaved forests elsewhere in the world.Moreover,its productivity was lower than the model estimate,indicating that without disturbance,this community has great developmental potential in terms of community biomass and productivity.
