The effect of aging on skeletal-muscle recovery from exercise: possible implications for aging athletes

Recovery from exercise is integral to the physical training process. There is a perception among older athletes that aging negatively affects the recovery process. Plausible arguments for an impaired recovery with aging are a greater susceptibility of older muscle to exercise-induced skeletal-muscle damage and a slower repair and adaptation response. Differences in the physical activity level of the research participants are rarely considered, however. This makes it difficult to differentiate the respective roles of declining physical activity and aging on the recovery process. Furthermore, the type of exercise used to induce damage and monitor recovery is often not indicative of a normal training stimulus for athletes. This review discusses the effects of aging on skeletal-muscle damage and recovery processes and highlights the limitations of many of these studies with respect to older athletes. Future research should use an exercise intervention representative of a normal training stimulus and take the physical activity level of the participants into account.     

The Optimality of a Simple Market Mechanism

Strategic behavior in a finite market can cause inefficiency in the allocation, and market mechanisms differ in how successfully they limit this inefficiency. A method for ranking algorithms in computer science is adapted here to rank market mechanisms according to how quickly inefficiency diminishes as the size of the market increases. It is shown that trade at a single market–clearing price in the k–double auction is worst–case asymptotic optimal among all plausible mechanisms: evaluating mechanisms in their least favorable trading environments for each possible size of the market, the k–double auction is shown to force the worst–case inefficiency to zero at the fastest possible rate.     

Group Support Systems,Power, and Influence in an Organization: A Field Study

Emerging group technologies are attracting attention from researchers and practitioners for the benefits they potentially offer in terms of communications, productivity, and decision-making capabilities within an organization. To date, research in this area has focused on process or outcome variables, substantively ignoring organizational context issues. This paper reports on a field study that investigated users' perceptions of the impact of group support systems on power and influence within the organization. The study was conducted within a division of a major U.S. software company specializing in the development of business software tools for desktop PCs. Fifteen purposively selected managers and nonmanagers, spanning diverse functional areas, were extensively interviewed for this study. Evidence gathered suggested that group support systems are perceived to exert an equalizing force on power and influence by (1) increasing participation in the decision-making process, (2) improving access to information, (3) improving access to persons, (4) reducing the “power distance” to key individuals, and (5) providing increased opportunities to influence the opinions of others. These results provide a basis for future studies that will attempt to clarify the relationships between organizational context and group technology usage.     

Mock Ebonics: Linguistic racism in parodies of Ebonics on the Internet

This study describes and analyzes outgroup linguistic racism in parodies of Ebonics (‘Mock Ebonics’) that appeared on the Internet in the wake of the December 18, 1996 resolution of the Board of Education of the Oakland (California) Unified School District on improving the English-language skills of African-American students. We examined 23 World Wide Web pages containing 270,188 words, from which we chose nine pages containing 225,726 words for in-depth analysis. Drawing on a characterization of Mock Spanish, our analysis shows that Mock Ebonics is a system of graphemic-phonetic, grammatical, semantic, and pragmatic strategies for representing an outgroup's belief in the imperfection and inferiority of Ebonics and its users. We show how producers of Ebonics parody pages employ these strategies, which are common in speech stereotypes, to articulate an anti-Ebonics language ideology and shift the blame for the poor academic performance of African Americans from a racist society to learners and the community from which they come.     

Are “Overpaid” Workers Really Unhappy? A Test of the Theory of Cognitive Dissonance

ABSTRACT: Using data on individual perceptions of deserved pay for workers in six British local labour markets, this paper tests the implicit proposition of cognitive dissonance theory that workers who express themselves as being overpaid should exhibit lower job satisfaction than equitably paid workers. The regression results do not provide any evidence in support of the proposition.