Effects of acute 60 and 80% VO2max bouts of aerobic exercise on state anxiety of women of different age groups across time

The purpose of this investigation was to study the effects of an acute bout of aerobic exercise on state anxiety of women while controlling for iron status (hemoglobin and serum ferritin). Participants were 24 active women, ages 18-20 years (n = 12) and 35-45 years (n = 12). In addition to a nonexercise control condition, participants completed one exercise bout at 60% maximal oxygen uptake (VO2max) and one at 80% VO2max. Each exercise session consisted of a 33-min bout in which participants exercised at their target intensities for a 20-min segment. Immediately before each exercise trial, participants were given the Spielberger State Anxiety Inventory (SAI). The SAI was again administered immediately following the exercise session and at 30, 60, and 90 min postexercise. Data were analyzed using an Age x Intensity x Time (2 x 3 x 5) repeated measures analysis of covariance (ANCOVA) with iron status serving as the covariate. The ANCOVA on state anxiety yielded significant effects for time (p < .0001, eta2(p) = .48), the Intensity x Time interaction (p = .0006, eta2(p) = .19), and the Intensity x Age interaction (p = .04, eta2(p) = .15). All three exercise conditions (including control) showed a decline in state anxiety across time, but the 80% VO2max condition showed a sharper decline. Intensity of exercise conditions did not differ in state anxiety at baseline or immediately after exercise, but a difference favoring the 80% VO2max condition over the control condition emerged at 30 min postexercise. After controlling for iron status, older women who exercised at 80% VO2max exhibited lower SAI scores compared to the control condition.     

The Air‐gap Phenomenon in Young Children's Pictures

In Experiment 1, 221 children aged 5;l‐10;2 were asked to crayon or paint an outdoor scene. The shift from leaving an air‐gap to filling in the sky occurred at approximately 8 years of age whether crayons or paint were used. In Experiment 2 four groups of children (mean age, 6;8) who normally left an air‐gap were asked to draw a photographic slide of an outdoor scene projected onto a screen. We manipulated the amount of exposure to the slide and also the information about it given by the experimenter. More children relinquished their air‐gap response when the experimenter had drawn their attention, verbally, to the full sky. When children received this information and were able to view the slide throughout the drawing session, there was also a tendency for more of them to draw the full sky and for those who left an air‐gap to draw the sky significantly deeper.     

Warrant and the Definition of Electronic Records: Questions Arising from the Pittsburgh Project

The University of Pittsburgh Electronic Recordkeeping Research Project established a model for developing functional requirements and metadata specifications based on warrant, defined as the laws, regulations, best practices, and customs that regulate recordkeeping. Research has shown that warrant can also increase the acceptance by records creators and others of functional requirements for recordkeeping. This article identifies areas related to warrant that require future study. The authors conclude by suggesting that requirements for recordkeeping may vary from country to country and industry to industry because of differing warrant.