84 research outputs found
Costs of chronic waterborne zinc exposure and the consequences of zinc acclimation on the gill/zinc interactions of rainbow trout in hard and soft water
Toward a Better Understanding of the Causal Effects of Role Demands on WorkâFamily Conflict: A Genetic Modeling Approach
www.clevelandfed.org/research. Working Paper 13-01R May 2014* Do Public Pension Obligations Affect State Funding Costs?
w o r k i n g p a p e
Exercise interventions preserve hippocampal volume: A metaâanalysis
Hippocampal volume is a marker of brain health and is reduced with aging and neurological disease. Exercise may be effective at increasing and preserving hippocampal volume, potentially serving as a treatment for conditions associated with hippocampal atrophy (e.g., dementia). This metaâanalysis aimed to identify whether exercise training has a positive effect on hippocampal volume and how population characteristics and exercise parameters moderate this effect. Studies met the following criteria: (a) controlled trials; (b) interventions of physical exercise; (c) included at least one timeâpoint of hippocampal volume data before the intervention and one after; (d) assessed hippocampal volume using either manual or automated segmentation algorithms. Animal studies, voxelâbased morphometry analyses, and multiâmodal interventions (e.g., cognitive training or meditation) were excluded. The primary analysis in n =â23 interventions from 22 published studies revealed a significant positive effect of exercise on total hippocampal volume. The overall effect was significant in older samples (65âyears of age or older) and in interventions that lasted over 24âweeks and had less than 150âmin per week of exercise. These findings suggest that moderate amounts of exercise for interventions greater than 6âmonths have a positive effect on hippocampal volume including in older populations vulnerable to hippocampal atrophy
The Effects of Certain Heavy Metal Salts on the Development of Eggs in Common Carp,Cyprinus Carpio var.communis
Using a water-effect ratio approach to establish effects of an effluent-influenced stream on copper toxicity to the fathead minnow
Short Term Effects of Aldrin and Swascofix CD-38 on the Feeding and Respiratory Behaviours ofClarias batrachus andCirrhina mrigala
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