Differences in functional immune responses of high vs. low hardy healthy individuals.

An association between the personality trait of hardiness and immune responses was explored. Blood samples were collected from 21 healthy individuals under nonstressful conditions, who had either high or low levels of hardiness. Functional immune assays tested for natural killer (NK) cell activity and proliferation responses to Candida albicans (Candida), purified protein derivative from Mycobacterium tuberculosis (PPD), lipopolysaccharide (LPS), concanavalin A (Con A), and Staphylococcus enterotoxin A (Staph A). Differences between high and low hardy groups on these immune responses were examined using Bonferroni adjusted independent t-tests. Results revealed significant differences between the groups for Candida, PPD, Con A, and Staph A. In all instances, the high hardy group had larger mean proliferative responses than the low hardy group. Implications of the study as well as avenues for future research are discussed.

The relationships between self-leadership and enhanced psychological, health, and work outcomes.

Two cross-sectional studies were conducted to examine the correlations between the concept of self-leadership (as described within the framework of the internal family systems model) and enhanced psychological, health, and work outcomes. In Study 1, self-leadership was significantly related to higher psychological functioning (e.g., effective coping style, greater optimism and hardiness, and less ineffectiveness and interpersonal distrust) and better health status (e.g., greater perceived wellness, less perceived stress, and fewer symptoms of illness) in a sample of university students (N = 270). In Study 2, in which a sample of corporate employees (N = 160) was examined, self-leadership was significantly related to greater perceptions of work satisfaction, enhanced communication, quality management, effective work relationships, and in terms of health outcomes, greater perceived wellness and less work stress. Implications of the relationships between self-leadership and psychological, health, and work outcomes are discussed.

The development and validation of the Sense of Support Scale.

Two studies were conducted to develop and validate the Sense of Support Scale (SSS). Study 1, which consisted of scale development and an evaluation with a sample of corporate and university employees, supported the scale's internal consistency and construct validity. Study 2, which was conducted with a sample of undergraduate students, was designed to evaluate the revised and shortened version of the SSS. The scale was found to be internally consistent and had a high test-retest reliability. Concurrent validity was supported by significant correlations to the Social Provisions Scale and the Interpersonal Support Evaluation List. Construct validity was supported by significant positive correlations to hardiness and approach-coping and significant negative correlations to avoidance-coping, stress, and symptoms of illness. The relationship between the SSS and symptoms of illness supported a main effect rather than a stress-buffering model. Implications for using the SSS to investigate the influences of social support on health are discussed.

Conceptualization and measurement of the spiritual and psychological dimensions of wellness in a college population.

Wellness is commonly conceptualized as having many dimensions, but little effort has been made to evaluate how spiritual and psychological dimensions are related to overall wellness. To explore the relationship between measures of spiritual and psychological wellness and perceived wellness in a college student population, the authors administered a series of survey instruments to 112 undergraduate students under quiet classroom conditions. They used the Life Attitude Profile to measure spiritual wellness, the Life Orientation Test and the Sense of Coherence Scale to measure psychological wellness, and the Perceived Wellness Survey to measure overall wellness. Path analysis performed with a proposed theoretical model revealed that the effect of life purpose on perceived wellness was mediated by optimism and sense of coherence, which had independent effects on perceived wellness beyond that of life purpose. The findings suggested that an optimistic outlook and sense of coherence must be present for life purpose to enhance a sense of overall well-being.

Outcomes of a traditional weight control program and a nondiet alternative: a one-year comparison.

The purpose of this study was to evaluate the effectiveness of a traditional weight control program and nondiet alternative in improving behavioral (e.g., restrained, emotional, and external eating), psychological (e.g., body preoccupation, physical self-esteem), and biomedical (e.g., body weight, blood pressure, cholesterol) outcomes. There were 2 intervention groups--traditional weight control (TWC) and Diet Free Forever (DFF); a nonvolunteer comparison group; and a control group, all made up of employees of 3M (N = 357). The 2 intervention groups participated in 10-week eating programs. Outcome variables were assessed at baseline, at 10 weeks for the intervention groups only, and again at 1 year. At baseline, the 2 intervention groups had higher restrained, external, and emotional eating scores, greater body preoccupation, and lower physical self-esteem than the comparison and control groups. They also weighed more. At 1 year, both intervention groups had decreased their body preoccupation and increased their physical self-esteem. Participants in the DFF program reduced their restrained eating, whereas those in the TWC program increased their restrained eating. Neither eating program had an impact on the biomedical outcomes.

Rethinking traditional weight management programs: a 3-year follow-up evaluation of a new approach.

We evaluated the effectiveness of a nondiet approach designed to reduce restrained eating behaviors and improve self-acceptance and self-esteem. This approach also encourages participants to address eating and exercise behavior separately. Subjects were Conoco employees who participated in the Wellness Department's Eat For L.I.F.E. (Long-term change; Image of self; Fun; Enjoyment of eating) program and completed pre-participation and 3-year follow-up questionnaires (N = 79). Pre- and postsurvey data were used to assess participants eating behavior, dieting behavior, self-acceptance, self-esteem, level of physical activity, and demographic information. Mastery of the internally directed eating style was assessed during the program at 3 months, at the conclusion of the 6-month program, and at the 3-year follow-up. Analysis of variance indicated that Eat For L.I.F.E. participants were able to significantly decrease their restrained eating behavior and increase self-acceptance, self-esteem, and level of physical activity. Participants also were able to adopt many aspects of the nonrestrained, internally directed eating style and decrease their frequency of weighing-in behavior. These results indicate that strategies fostering internally directed eating behaviors may be more centrally related to an individual's well-being than programs supporting externally directed eating behaviors.

The importance of physical fitness versus physical activity for coronary artery disease risk factors: a cross-sectional analysis.

Numerous epidemiological investigations have shown that low physical fitness and low physical activity are related to the incidence of coronary artery disease (CAD). Most studies, however, have not examined both variables concurrently to determine which has the strongest association with CAD risk. The purpose of this investigation was to cross-sectionally examine the relationships among physical fitness, physical activity, and risk factors for CAD. Male law enforcement officers (N = 412) from the City of Austin, Texas, were subjects for this study. Physical fitness, physical activity, and risk factors for CAD were assessed through health screenings and from data collected as part of an annual physical fitness assessment. Multivariate analysis of covariance revealed that physical fitness, but not physical activity, was related to several single CAD risk factors. Percent body fat, smoking habits, and Type A behavior score were negatively related to physical fitness level, and high density lipoprotein (HDL) cholesterol was positively related to physical fitness level. Univariate analysis of variance found both physical fitness and physical activity to be significantly related to a composite CAD risk score. Low physical fitness and low physical activity were associated with a high CAD risk score. These data suggest that physical activity must be sufficient to influence physical fitness before statistically significant risk-reducing benefits on single CAD risk factors are obtained, although minimal engagement in weekly vigorous activity provides a significant benefit for the composite CAD risk score. It is plausible, however, that physical fitness is a stronger measure than physical activity and optimally characterizes the relationship among physical activity and CAD risk factors.

The relationship of internally directed behavior to self-reinforcement, self-esteem, and expectancy values for exercise.

PURPOSE: This study investigated two opposing orientations toward exercise and wellness behavior as related to selected personal characteristics. A "self-trusting" orientation focuses on process measures, and exercise and wellness behavior is internally directed. A "self-controlling" orientation focuses on outcome measures, and exercise and wellness behavior is externally directed. DESIGN: Relationships among variables were assessed using Pearson correlation and step-wise multiple regression. SETTING: One questionnaire was administered to all subjects under quiet classroom conditions. SUBJECTS: Subjects were enrolled in university physical education activity classes (N = 154), a health promotion and fitness undergraduate class (N = 52), and a commercial aerobic dance program (N = 68). MEASURES: The questionnaire, containing 157 items, assessed exercise orientation, wellness orientation, general self-esteem, physical self-esteem, self-reinforcement, expectancy values for exercise, and level of physical activity. RESULTS: Individuals who reported exercising to improve physical appearance and/or physical performance had higher control scores on the exercise scale; exercising for pleasure or social reasons served as suppressor variables. High control scores on wellness and exercise orientation were indicative of individuals less likely to positively self-reinforce their behavior. A high control score on the wellness scale was significantly related to lower general and physical self-esteem scores. Finally, higher physical self-esteem was significantly related to exercising for pleasure and athletic reasons; exercising to improve physical appearance served as a suppressor variable. CONCLUSIONS: These data strengthen the recommendation that health promotion professionals consider alternative approaches to promoting exercise and enhancing wellness.(ABSTRACT TRUNCATED AT 250 WORDS)

Psychological attributes of participants and nonparticipants in a worksite health and fitness center.

This study examined differences in psychological attributes (eg, estimation of physical ability, attraction to physical activity, self-motivation, and attitudinal commitment to physical activity) among 646 participants and nonparticipants in an onsite health and fitness program. An analysis of the data, using stepwise multiple regression and controlling for age and sex, revealed that the psychological attributes significantly predicted group membership (R2 = .27). Increased participation was related to higher levels of attitudinal commitment (beta = .48) and self-motivation (beta = .16). Increased participation, however, was inversely related to estimation of physical ability (beta = -.17). Results of the stepwise multiple discriminant analysis showed that nonparticipants and high active participants could be classified using the predetermined variables with an accuracy of 32.7% and 40.1% gain above base rate, respectively. Low active and moderately active participants were classified at a rate only equal to chance. The authors discuss implications for programming strategies to increase participation in onsite programs.

Early and continued participation in a work-site health and fitness program.

This study examines social-environmental, physical-behavioral, and psychological factors influencing early and continued participation in physical activity. Data for the study were collected during the first six months of operation of a work-site Health and Fitness Center. The following sources were used to collect data (N = 403): 1) printouts of frequency of employee visits to the Health and Fitness Center; 2) a questionnaire; and 3) fitness files. Data measuring early (month one) and continued (month six) participation were obtained from printouts of frequency of employee visits. A questionnaire measured estimation of physical ability, attraction to physical activity, youth participation, social support, and convenience of the Health and Fitness Center. Fitness files were used to obtain measures of cardiovascular fitness, percent body fat, and recent participation. Linear discriminant analysis was conducted to determine the practical usefulness of the social-environmental, physical-behavioral, and psychological factors for classifying employees into categories of exercise adherers and nonadherers. A measure of exercise adherence was based on company policy of six visits each month. Results for early participation (month one) indicated that convenience, sex, youth participation, attitudinal commitment, and age discriminated (p less than .05) among adherers and nonadherers with 63% accuracy. At the end of six months, attitudinal commitment, sex, convenience, and estimation of physical ability discriminated (p less than .05) among adherers and non-adherers with 60% accuracy. In addition, when early participation in the health and fitness program served as the measure of recent participation for the six month analysis, recent participation and attitudinal commitment discriminated (p less than .05) between the two adherence categories with 75% accuracy. Adherers and nonadherers were classified with 66% and 85% accuracy, respectively.

Reliability and validity of expected outcomes and barriers for habitual physical activity.

We conducted two studies to examine the reliability and validity of self-report scales for assessing outcome-expectancy values and perceived barriers for participating in regular physical activity. In study one with college students (N = 243), independent and reliable psychometric factors were identified as outcome-expectancy values (psychologic, body image, and health) and perceived barriers (time, effort, and obstacles). alpha internal consistency coefficients ranged from .47 to .78, and test-retest stability correlations were .66 to .89. In prospective analyses, subscales significantly predicted supervised running (R2 = .27) and free-living physical activity estimated by seven-day recall at two-, five-, and nine-week intervals (R2 ranged from .13 to .24). In study two with employees at CONOCO World Headquarters (N = 968), similar independent scales were derived for outcome-expectancy values (psychologic, body image/health, competition, fun, and social) and perceived barriers (time, effort, obstacles, and limiting health). alpha internal consistencies ranged from .66 to .85. In cross-sectional analyses the scales combined with sociodemographic factors were significantly correlated with membership (R2 = .18) and participation (R2 = .17) in the on-site health and fitness program. In each instance outcome-expectancy values and perceived barriers explained variance in physical activity not accounted for by sociodemographics (R2 values increased .12). Membership in health and fitness programs outside the work site was also predicted (R2 = .07) by the scales. The scales provide a reliable and valid measurement technology that can be implemented with college or work site populations. Existing social psychology theories of behavior that include outcome-expectancy values or perceived barriers can now be examined as explanations for the adoption and maintenance of a physical activity program.