| 1 | Exercise interventions for older adults: A systematic review of meta-analyses显示文摘Background:The evidence concerning which physical exercise characteristics are most effective for older adults is fragmented.We aimed to characterize the extent of this diversity and inconsistency and identify future directions for research by undertaking a systematic review of metaanalyses of exercise interventions in older adults.Methods:We searched the Cochrane Database of Systematic Reviews,PsycInfo,MEDLINE,Embase,CINAHL,AMED,SPORTDiscus,and Web of Science for articles that met the following criteria:(1)meta-analyses that synthesized measures of improvement(e.g.,effect sizes)on any outcome identified in studies of exercise interventions;(2)participants in the studies meta-analyzed were adults aged 65+or had a mean age of 70+;(3)meta-analyses that included studies of any type of exercise,including its duration,frequency,intensity,and mode of delivery;(4)interventions that included multiple components(e.g.,exercise and cognitive stimulation),with effect sizes that were computed separately for the exercise component;and(5)meta-analyses that were published in any year or language.The characteristics of the reviews,of the interventions,and of the parameters improved through exercise were reported through narrative synthesis.Identification of the interventions linked to the largest improvements was carried out by identifying the highest values for improvement recorded across the reviews.The study included 56 meta-analyses that were heterogeneous in relation to population,sample size,settings,outcomes,and intervention characteristics.Results:The largest effect sizes for improvement were found for resistance training,meditative movement interventions,and exercise-based active videogames.Conclusion:The review identified important gaps in research,including a lack of studies investigating the benefits of group interventions,the characteristics of professionals delivering the interventions associated with better outcomes,and the impact of motivational strategies and of significant others(e.g.,carers)on intervention delivery and outcomes. | Claudio Di Lorito Annabelle Long Adrian Byrne Rowan H.Harwood John R.F.Gladman Stefan Schneider Pip Logan Alessandro Bosco Veronika van der Wardt | 2021 | Journal of Sport and Health Science2021，10，1： | 3 |
| 2 | Desmosterol, the main sterol in rabbit semen: distribution among semen subfractions and its role in the in vitro spermatozoa acrosome reaction and motility显示文摘甾醇是细胞膜类脂化合物 bilayer 的必要部件包括象胆固醇和 desmosterol 那样的分子,它显著地在几动物种的精子被发现。然而,在兔子精液的 desmosterol 的存在从来没被调查过。这研究的目的是描绘呼喊的兔子精液的 subfractions 的甾醇作文并且评估在里面精子 acrosome 反应和活动性上的甾醇的 vitro 效果。二甾醇,在免费形式(94.3%) 流行地发生,在从 10 只肥沃的新西兰白兔子收集的整个精液被识别,明确地 desmosterol (58.5% 全部的甾醇) 和胆固醇(35.9% 全部的甾醇) 。Desmosterol 是在兔子精液的所有 subfractions 发现的占优势的甾醇,从 56.7% 变化(在 prostatic 能分泌的小粒, PSG ) 到 63.8%( 在精液的血浆) 。精子包含了 desmosterol (59.8%) 的一个中间的比例,它在头(甾醇的 52.0% 全部的内容) 和尾巴(81.8%) 之间是不均匀地分布式的。结果证明 desmosterol 和胆固醇能从 PSG 被转移到精子并且在比 1 mg L 高在集中在 vitro 精子 capacitation 禁止是同等地有效的 ? 1。相反,既不 desmosterol 也不胆固醇在精子活动性上有重要效果。因此,这被结束,兔子精液的各种各样的部分在甾醇作文和数量不同于对方,可以可能由于他们的不同功能的性质,和这些部分经历取决于精子 capacitation 的舞台的重要甾醇变化。 | Evangelia Mourvaki Raffaella Cardinali Rita Roberti Alessandro Dal Bosco Cesare Castellini | 2010 | Asian Journal of Andrology2010，12，6： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员