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991.
Firing Squads and Fine-Tuning: Sober on the Design Argument 总被引：1，自引：0，他引：1
992.
There is a paucity of research on devices suitable for home-based isometric exercise. Our aim was to compare cardiovascular responses to isometric exercise using novel and established methods. Ten individuals (age 34.0 +/- 8.5 years, mass 68.2 +/- 10.4 kg, height 1.72 +/- 0.09 m; mean +/- s) performed three different isometric exercise protocols with 48 h between each. Each protocol involved four repeated exercise bouts of 2 min at 30% maximum voluntary contraction force using alternate legs (transducer), alternate arms (transducer), or alternate arms (novel device). Systolic blood pressure, diastolic blood pressure, mean arterial blood pressure and heart rate were measured every 30 s. The highest (peak) values during each 2 min bout of exercise were recorded (peak systolic blood pressure, peak diastolic blood pressure, peak mean arterial blood pressure and peak heart rate). At the end of each 2 min exercise bout, the participants rated their perceived discomfort using Borg's CR-10 scale. There was a statistically significant difference in peak systolic blood pressure between isometric arm flexion using the force transducer and the novel device [158.1 +/- 10.8 vs. 149.1 +/- 13.9 mmHg (mean +/- s); P = 0.02]. Further analysis showed that peak systolic blood pressure was on average 9 mmHg higher using the force transducer with limits of agreement of - 15.97 to 33.97 mmHg. Analysis of the peak diastolic blood pressure, peak mean arterial blood pressure, peak heart rate and CR-10 data revealed no statistically significant differences between the three protocols. These results suggest that this novel, home-based method elicited similar cardiovascular responses during isometric exercise to those of established laboratory-based methods. However, the lower peak systolic blood pressure using the modified scales warrants further investigation before this method is used widely in the home. 相似文献
993.
Eldredge JD 《Health information and libraries journal》2002,19(2):71-77
Objective: To predict the possible accomplishments of the Evidence‐Based Librarianship (EBL) movement by the years 2005, 2010, 2015 and 2020. Methods: Predictive. The author draws upon recent events, relevant historical events and anecdotal accounts to detect evidence of predictable trends. Results: The author develops a set of probable predictions for the development of EBL. Although incomplete evidence exists, some trends still seem discernible. Conclusion: By 2020, EBL will have become indistinguishable from mainstream health sciences librarianship/informatics practices. 相似文献
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