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11.
Introduction: The aim of this investigation was to examine the impact high-intensity interval training (HIIT) on serum insulin-like growth factor-I (IGF-I) in active compared with sedentary aging men.Methods: 22 lifetime sedentary (SED; 62?±?2 years) and 17 masters’ athletes (LEX; 60?±?5 years) were recruited to the study. As HIIT requires preconditioning exercise in sedentary cohorts, the study required three assessment phases; enrollment (phase A), following preconditioning exercise (phase B), and post-HIIT (phase C). Serum IGF-I was determined by electrochemiluminescent immunoassay.Results: IGF-I was higher in LEX compared to SED at baseline (p?=?0.007, Cohen’s d?=?0.91), and phase B (p?=?0.083, Cohen’s d?=?0.59), with only a small difference at C (p?=?0.291, Cohen’s d?=?0.35). SED experienced a small increase in IGF-I following preconditioning from 13.1?±?4.7 to 14.2?±?6.0?μg·dl?1 (p?=?0.376, Cohen’s d?=?0.22), followed by a larger increase post-HIIT (16.9?±?4.4?μg·dl?1), which was significantly elevated compared with baseline (p?=?0.002, Cohen’s d?=?0.85), and post-preconditioning (p?=?0.005, Cohen’s d?=?0.51). LEX experienced a trivial changes in IGF-I from A to B (18.2?±?6.4 to 17.2?±?3.7?μg·dl?1 [p?=?0.538, Cohen’s d?=?0.19]), and a small change post-HIIT (18.4?±?4.1?μg·dl?1 [p?=?0.283, Cohen’s d?=?0.31]). Small increases were observed in fat-free mass in both groups following HIIT (p?0.05, Cohen’s d?=?0.32–0.45).Conclusions: In conclusion, HIIT with preconditioning exercise abrogates the age associated difference in IGF-I between SED and LEX, and induces small improvements in fat-free mass in both SED and LEX. 相似文献
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Herbert Matschinger Matthias C. Angermeyer 《?sterreichische Zeitschrift für Soziologie》2001,26(1):46-67
With this article, an attempt is made to combine both confirmatory and exploratory analysis. It is argued that confirmatory and exploratory approaches have to complement one another. As an example for confirmation latent-class-models are estimated for 3 variables which are supposed to measure a latent dimension “attitudes towards integration — segregation of the mentally ill”. Employing a 3-, and a 4-class solution it can be shown that exclusively looking on the model fit is not sufficient. Since both models fit equally well, both the membership-probabilities and the category-probabilities for each class are inspected. By means of homogeneity-analysis within the latent classes, the interpretation of deviations from the model assumptions is facilitated considerably. It is shown that very special and rare responsepattern may question a straightforward interpretation of a simple parsimonious model. 相似文献
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Popular or media portrayals have suggested that many suburban housewives are dissatisfied with a number of aspects of their lives. This claim was investigated by surveying two groups of Brisbane women. Data obtained firstly from a sample at a shopping town and secondly from the members of a women's social club suggests that the dissatisfaction with the role of housewife expressed in the media may be overstated. Women find a lack of social contacts with others to be acute but report satisfaction with other aspects of their lives. Tentative solutions to facilitate social contacts between women are suggested. 相似文献
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A path scheme for a game is composed of a path, i.e., a sequence of coalitions that is formed during the coalition formation process and a scheme, i.e., a payoff vector for each coalition in the path. A path scheme is called population monotonic if a player’s payoff does not decrease as the path coalition grows. In this study, we focus on Shapley path schemes of simple
games in which for every path coalition the Shapley value of the associated subgame provides the allocation at hand. Obviously,
each Shapley path scheme of a game is population monotonic if and only if the Shapley allocation scheme of the game is population
monotonic in the sense of Sprumont (Games Econ Behav 2:378–394, 1990). We prove that a simple game allows for population monotonic
Shapley path schemes if and only if the game is balanced. Moreover, the Shapley path scheme of a specific path is population
monotonic if and only if the first winning coalition that is formed along the path contains every minimal winning coalition.
We also show that each Shapley path scheme of a simple game is population monotonic if and only if the set of veto players
of the game is a winning coalition. Extensions of these results to other efficient probabilistic values are discussed. 相似文献
16.
Herbert H. Aptekar 《Journal of Social Work Education》2013,49(2):99-105
Study findings suggest that selective processes and graduate education combine to produce a professional social worker who has a favorable orientation toward public dependency. Previous studies which found no relation between graduate education and value change or which found a negative relation, may be explained on the basis that the values studied may not have found expression in the curriculum or were diluted in strength because they competed with other cherished values. 相似文献
17.
Herbert Csef 《Organisationsberatung, Supervision, Coaching》2016,23(2):163-171
For a long time, leadership concepts were dominated by human resource development of successful managers. In recent years, management failure (“derailment”) came into focus of discussions. The causes of derailment are multifactorial involving personality traits, job-related challenges and the work environment. Considering personality traits, the correlation between narcissism and leadership is of late gaining attention. Dual concepts of narcissism have been developed in order to explain narcissists’ predisposition for leading positions, and on the other hand they reveal narcissism as a risk factor for management failure. Both sides of narcissism are relevant for organizational consulting, coaching, and supervision. They provide effective concepts for prevention of derailment. 相似文献
18.
For many years, comparative welfare state research has followed a ‘methodological nationalism’ in the sense that countries were treated as independent units. Yet the recent ‘spatial turn’ in comparative politics has also influenced welfare state research. For some years now, the field has been witnessing a growing interest in questions about interdependencies and policy diffusion between countries. In this article, we provide a structured overview of the state of the art in the policy diffusion and transfer literature that deals specifically with social policy. We present and critically evaluate existing theoretical concepts and quantitative and qualitative methodological approaches that enable the analysis of interdependencies between countries. Moreover, we summarize the empirical findings of quantitative and qualitative studies on the diffusion and transfer of social policy, from some pioneering studies to the latest findings. Against this background we point out what we believe to be promising avenues for future research. We focus on five areas: theoretical work on the mechanisms underlying diffusion and transfer; methodological approaches; the impact of domestic institutions and policy characteristics on social policy diffusion and transfer; programme‐specific dynamics; and the systematic combination of horizontal and vertical interdependencies. 相似文献
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