Visual search of food nutrition labels.

Using an eye-tracking methodology, we evaluated food nutrition labels' ability to support rapid and accurate visual search for nutrition information. Participants (5 practiced label readers and 5 nonreaders) viewed 180 trials of nutrition labels on a computer, finding answers to questions (e.g., serving size). Label manipulations included several alternative line arrangements, location of the question target item, and label size. Dependent measures included search time and number of fixations prior to visually capturing the target, as well as the accuracy and duration of the capturing fixation. Practiced label readers acquired the target more quickly and accurately than did less-practiced readers. Targets near the denser center of the label required 33% more time and were harder to find than targets at the top or bottom of the label. Thinner alignment lines were more influential than thicker anchoring lines on visual search time. Overall, the current nutrition label supported accurate and rapid search for desired information. Potential applications of the present methodology include the evaluation of warning labels and other static visual displays.

Knowledge and misconceptions about the food label among women with non-insulin-dependent diabetes mellitus.

Women on restricted diets are reportedly among the most frequent readers of nutrition information on food labels. However, the specific label information that women with non-insulin-dependent diabetes mellitus (NIDDM) comprehend and use has not been determined. The purpose of this study was to explore the attitude toward, use, and knowledge of information on the food label among rural women with NIDDM age 40 to 60 years. Focus groups and in-depth interviews were conducted. Participants reported that they referred to the nutrition information on the label when grocery shopping and preferred the newly revised format. Yet, comprehension of the terms and percentages on the label was poor (eg, the majority of participants could not explain the difference between total carbohydrate and sugars). Misconceptions also were noted about nutrients listed on the label and the percent daily value. Further education is needed to help people with NIDDM understand and apply the nutrition information on food labels to meet their individual needs.

Diet and athletic performance.

Inadequate diet inhibits optimal performance in otherwise well-trained athletes. Controversy exists regarding specific dietary requirements, particularly in the areas of protein and vitamin/mineral supplementation. This article reviews energy substrate utilization, provides an overview of nutrient requirements during exercise, discusses ergogenic aids, and where possible, makes specific dietary recommendations for athletes.

The effect of moderate aerobic exercise on physical fitness among women 70 years and older.

This study investigated benefits of 26 weeks of moderate aerobic exercise for women 70 years or older. Sixteen healthy women with a mean age of 72.0 years were randomized into exercise (n = 10) and control groups (n = 6). The exercise group walked on a treadmill 3 times per week for 20 min, at 70% of maximum heart rate. Oxygen uptake VO2max expressed in l/min and ml.kg-1.min-1, total exercise time on the treadmill (TET), maximum heart rate (HRmax) and body mass index (BMI) were measured at baseline and 6 months. Two-way repeated measures analysis of variance (ANOVA) determined the effect of exercise intervention. Both measures of VO2max in addition to TET were significantly improved by the moderate training program, compared to the control group. VO2max in the exercise group increased by +/- 6.6% (S.E. 2.9) measured in l/min and 8.4% (S.E. 3.2) measured in ml.kg-1.min-1. TET increased by 25.4% (S.E. 4.9) in the exercise group. The ANOVA was unable to detect significance between the exercise and control groups for HRmax or BMI. All exercising subjects finished the program, apparently tolerating the intervention. The results indicate that healthy women over the age of 70 years can increase fitness measures with a moderate training program.

The relationship between radon knowledge, concern and behavior, and health values, health locus of control and preventive health behaviors.

Understanding similarities between health-related and radon-related knowledge, attitudes, and behaviors may suggest application of effective strategies of radon-related education in targeted populations. A mail survey was returned by 300 randomly selected homeowners in a community at risk for high home radon concentrations (50% response). While 64% were concerned, only 7% tested their homes. The expected association between radon knowledge, radon concern, and information-seeking was identified. In addition, those who tested their homes had greater knowledge and did more information seeking. Health values and radon concern were only weakly related. Environmental concern explained the greatest variance in radon concern (10%). Internal health locus of controls were more likely to have high radon concern. Of the preventive health behaviors, not smoking and seat belt use were the best predictors of variance in radon concern (5%). Segmenting the population is suggested for best educational outcome. Relating information to environmental issues may be helpful. Health-conscious people may need awareness of risks. Issues of self-control and radon testing and reduction may be helpful for some. Synergy between smoke and radon, compounded by smokers lack of concern suggests targeting smokers for education efforts.

Factors that influence the elderly to use traditional or nontraditional nutrition information sources.

This study analyzed sociodemographic variables, access to medical care, health status-related variables, and nutrition status-related variables to determine their ability to predict an orientation toward traditional or nontraditional nutrition information sources among aged subjects in Eugene, OR. Data were collected from 165 randomly selected subjects by trained interviewers using face-to-face interviews. Nutritionist orientation was measured by a Traditional/Nontraditional Index (TNT Index) developed for the study. Nutrition knowledge and misinformation, supplement use, and sources of nutrition information were also investigated. Predictors of nontraditional nutritionist orientation were acceptance of nutrition misinformation and male sex (adjusted R2 = .09). For women, predictors of a similar orientation were acceptance of nutrition misinformation, low knowledge of general nutrition information, and low functional health status (adjusted R2 = .19). Mean nutrition knowledge scores were high, with a mean of 4.7 (standard deviation [SD] = 0.8) on a scale ranging from 4 (high) to 8 (low). However, many of the subjects did not list dairy foods (28%) and grains (27%) as necessary in the diet. In addition, belief in certain nutrition myths was widespread. More than 58% were taking one or more supplements (mean = 1.4 supplements per day, SD = 1.98). Physicians were mentioned as most likely sources of nutrition information, with dietitians and health food store personnel mentioned second, indicating the importance of marketing efforts for registered dietitians.

A preliminary investigation using drama in community AIDS education.

This investigation assessed the impact of drama on AIDS-related knowledge and beliefs of selected individuals in a university community. Subjects were 136 members of the audience attending two performances of "As Is," the award-winning drama by William Hoffman depicting the illness and inevitable death of a homosexual man with AIDS. The investigation used a pretest-posttest design in which subjects completed a survey instrument before and immediately after the performance. No changes in AIDS-related beliefs were detected as a result of the play. However, knowledge decreased slightly. A linear multiple regression analysis determined variables that contributed significantly to variation in pretest knowledge about AIDS. Pretest knowledge scores were high, particularly in terms of modes of transmission. However, some confusion was evident concerning the concept of casual contact. Though subject responses on a pretest tolerance index generally indicated tolerant beliefs toward people with AIDS, substantial concerns were evident among a minority of subjects. More definitive research is needed to examine the impact of drama as a medium for affecting knowledge and beliefs about AIDS and other complex, emotion-laden health education issues.