Objective: Examine psychosocial mediators of the effects of high vs. low-dose resistance training (RT) maintenance interventions among older (ages 50–69), overweight and pre-diabetic adults.
Design: Participants (N = 123) completed a three-month supervised RT initiation phase and were subsequently randomised (time 1) to high or low-dose six-month unsupervised RT maintenance interventions (time 2), followed by a six-month no-contact phase (time 3).
Main Outcome Measures: Online measures of putative mediators and RT behaviour.
Results: RT intervention condition (high vs. low dose) had significant effects on change from time 1 to time 2 in behavioural expectation, self-regulation and perceived satisfaction (f2 = .04–.08), but not outcome expectancies, RT strategies or behavioural intentions (f2 ≤ .02). Change in each of the putative mediators, except for outcome expectancies (f2 ≤ .02), had significant effects on RT behaviour at times 2 (f2 = .12–.27) and 3 (f2 = .23–.40). In a multiple mediation model, behavioural expectation (f2 = .11) and self-regulation (f2 = .06) mediated the effects of RT intervention condition on time 2 RT behaviour, whereas perceived satisfaction did not (f2 = .01). Self-regulation was a significant mediator of intervention effects on time 3 RT behaviour (f2 = .11), but behavioural expectation and perceived satisfaction were not (f2 = .04).
Conclusions: Findings suggest that behavioural expectation and self-regulation are appropriate targets for RT maintenance interventions among at-risk older adults. 相似文献
Participants' interpretations of facial expressions of emotion and judgments made about the poser as a function of gender, job status, and facial expression were examined. Two hypotheses regarding interpretation of expression stress either facial expression alone or a combination of facial expression and social context. Gender and status of target were expected to influence ratings of emotion and personality characteristics. In a 2 × 2 × 3 between-subjects design, 246 participants (90% non-Hispanic Whites) read a vignette of a workplace interaction manipulating gender and job status of target and viewed a slide of the target displaying a facial expression of emotion. Measures of perceived emotion and ratings of personality characteristics produced main effects and interactions in support of the context-specific hypothesis: Gender and job status were significant influences on interpretation. 相似文献
This study examined the role of parenthood and parental influences on substance use patterns for 710 stimulant users age 18–61 living in the rural Midwest and Mid‐south U.S. Longitudinal growth analyses showed that a maternal history of drug use was associated with increased baseline drug use severity, lesser declines in severity, and greater plateau of drug use severity over time. Parental conflict was associated with lesser declines in drug use severity, and drug use severity declined more steeply for participants who were themselves parents. Participants with two parents having a history of alcohol use had a greater baseline severity of alcohol use, with paternal history of drug use associated with lower baseline alcohol use severity. These findings demonstrate the importance of identifying parental influences in evaluating adult substance use, and point to the inclusion of parents in efforts to prevent and treat substance use disorders. 相似文献
Trunk coordination is essential for many activities of daily living in wheelchair users. This study investigated whether Fitts' law is applicable to trunk movements in a sitting position. Fourteen healthy adults performed two series of 24 tasks of trunk flexion–extension movements in a sitting position. The results showed significant linear relationships between average group movement time (MT) and index of difficulty (ID) over all tasks (r2 = 0.92) and within target distances (0.94 < r2 < 1.00). Target distance affected intercept and slope (P < 0.001). Hence, Fitts' law is applicable to the studied trunk movements in a sitting position, indicating these trunk movements tasks could serve as a basis for qualitative trunk coordination tests. Transferability of these conclusions to wheelchair users, and optimal test design should be further investigated. 相似文献
In this study we examined the effects of gender, gender roles (masculinity and femininity), ambivalent sexism, and social dominance orientation with regard to tolerance of sexual harassment. It was predicted that women would be less tolerant than men of sexual harassment, however, men and women who were tolerant of sexual harassment would share ambivalence and hostility toward women, and they would exhibit higher levels of social dominance and masculinity. Results partially supported the hypotheses. Women were significantly less tolerant of harassment than men were, however, regression analyses showed that ambivalent sexism and hostility toward women accounted for the majority of total variance (35%), followed by gender (5%), social dominance (1%), femininity (0.7%), and nonsexism (0.6%). Masculinity and benevolent sexism were not significant predictors. Results suggest that ambivalence and hostility toward women are much greater predictors of tolerance of sexual harassment than is gender alone. 相似文献
We examined the effect of body norms on ideal and current body size perception. In Study One, female participants were randomly assigned to one of three experimental conditions: (1) a thinner body norm, (2) a heavier body norm, or (3) no body norm. Body norms were manipulated by indicating a bogus "population average," and current and ideal body size perception were subsequently measured using a body silhouettes measure. Women had a thinner ideal body size in the thinner norm condition than in the heavier norm condition. Study Two replicated these results, but in a sample of young men and with regards to muscularity rather than thinness. Men had a more muscular ideal body size in the more muscular norm condition than in the less muscular norm condition. Current body size perception was also influenced by body norms, but only for women and after controlling for BMI. 相似文献
Parental monitoring is defined as a set of behaviors used to gain knowledge about an adolescent’s whereabouts, friends and associates, and activities. However, can knowledge of adolescents’ whereabouts/activities, and friends all be attained through the same strategies? Or do they require their own strategies? This study used qualitative interviews with 173 parents of older adolescents from 100 families. Emergent themes described strategies by which parents gain information about their adolescents’ friends and the substance use of those friends. The strategies included direct interaction with the friend, gaining information from the teen, using second-hand sources, and making assumptions. Some of these strategies were consistent with previous research, while others raise new questions and provide interesting new directions to pursue. Primarily, additional consideration needs to be given to assessments of parental monitoring that include strategies for gaining knowledge of adolescents’ friends and their substance use. 相似文献