Involvement in Meaningful Activities and Self-Reported Aggression and Delinquency Among Inner-City Teenagers

Ninth grade students from an inner-city high school (n = 163) completed self-report measures assessing their participation in meaningful activities, behavioral problems, and locus of control. In multivariate analyses, Gender × Activity Level interaction effects were shown: males with higher levels of meaningful activity had significantly lower scores on aggression and delinquent behavior subscales than males with lower levels of meaningful activity. However, this relationship was not shown for females. Of youth who reported clinically significant levels of aggression and/or delinquency, females reported significantly higher levels of meaningful activities than males. Gender differences in findings and future research directions are discussed.     

活动参与在认知损害中的延缓作用

认知损害有关的病理机制、危险因素研究由来已久,但尚未找到有效治疗认知损害的途径,认知损害的保护性因素研究进而成为研究者们关注的热点。前人的研究显示活动参与对认知损害具有积极的影响,可能是认知损害的重要保护性因素,但活动参与对认知损害的影响机制以及各活动之间存在的交互作用仍不明确。未来的研究可着重探讨不同活动类型及其交互作用同认知损害的关系,并分析活动参与对认知损害起保护作用的公共因子。     

Predicting sports performance from well-being: A mapping of professional athletes’, amateur athletes’ and non-athletes’ positions

IntroductionPrediction of performance and well-being are two essential keys in sports performance.ObjectiveThe study aimed to map different positions regarding the way in which individuals integrated mentally five elements of eudaimonic well-being (relatedness, autonomy, competence, mental vitality and physical vitality) for predicting the degree of performance at the beginning of a match.MethodTwenty-four non-athletes, 44 amateur athletes and 26 professional athletes indicated their prediction of performance in 32 scenarios constructed from the combination of these elements of well-being. Cluster analysis, ANOVAs, and chi-square test have been done.ResultsTwo positions on prediction of performance were found. The first cluster was called “Sometimes Performance Prediction” and the second cluster was named “Seldom Performance Prediction”. The five elements had a positive effect on the prediction of performance. The composition of both clusters was linked to the level of involvement in sport.ConclusionOffering athletes a “well-being environment” may lead to predict the sports performance.     

The effect of breast support on upper body muscle activity during 5 km treadmill running

Breast support has previously been shown to influence surface EMG of the pectoralis major during running. Reductions in muscle activity have previously been associated with a reduction in energy cost, which may be advantageous for female runners. Ten female participants performed two self-paced (average pace 9 km h⁻¹) 5 km treadmill runs under two breast support conditions (low and high); an additional bare-breasted 2 min run was also conducted. Surface EMG electrodes were positioned on the pectoralis major, anterior deltoid, medial deltoid, and upper trapezius, with data collected during the first 2 min of running and each kilometer interval thereafter. Reductions in peak EMG of the pectoralis major, anterior and medial deltoid were reported when participants ran in the high breast support during the initial intervals of the run (up to the second kilometer). The increased activation in the pectoralis major, anterior and medial deltoid in the low breast support may be due to increased tension within these muscles, induced by the greater breast pain experienced in the low breast support. This may be a strategy to reduce the independent breast movement causing the pain through increased muscular activation. This study further promotes the use of a high breast support during running with potential benefits for treadmill running associated with reductions in muscular demand during a 5 km run.     

Intra-limb coordination in karate kicking: Effect of impacting or not impacting a target

This study aimed to investigate the kicking limb coordinative patterns adopted by karate practitioners (karateka) when impacting (IRK), or not impacting (NIRK) a target during a roundhouse kick. Six karateka performed three repetitions of both kicks while kicking limb kinematics were recorded using a stereophotogrammetric system. Intra-limb coordination was quantified for hip and knee flexion–extension from toe-off to kick completion, using the Continuous relative phase (CRP). Across the same time interval, thigh and shank angular momentum about the vertical axis of the body was calculated. For all trials, across all participants, CRP curve peaks and maximum and minimum angular momentum were determined. A RM-ANOVA was performed to test for differences between kicking conditions.The CRP analysis highlighted, during the central portion of both kicks, a delayed flexion of the hip with respect to the knee. Conversely, during the terminal portion of the CRP curves, the NIRK is performed with a more in-phase action, caused by a higher hip angular displacement. The NIRK is characterized by a lower angular momentum which may enhance control of the striking limb. It would seem that the issue of no impact appears to be solved through the control of all segments of the kicking limb, in contrast to the primary control of the lower leg only observed during the IRK.     

Recovery at home and performance at work: A diary study on self–family facilitation

This 5-day diary study among 65 Dutch employees focuses on the interplay between time on and off the job. We examined how daily off-job (work-related, physical, household) activities, in combination with the degree to which people want to engage in these activities relate to self–family facilitation (i.e., the positive influence of the fulfilment of one's own interests on one's family life). Further, we tested whether self–family facilitation relates to psychological detachment from work, recovery, and finally whether recovery relates to job performance. Multilevel analyses revealed that household activities enhance self–family facilitation only on days that people want to engage in such activities. Furthermore, spending time on household activities hinders psychological detachment on days people do not want to spend time on these activities. In addition, self–family facilitation and psychological detachment relate to better recovery the next morning. Finally, feeling recovered in the morning is beneficial for task performance during work. These findings emphasize the role of one's “wants” in the degree to which off-job activities lead to recovery. Furthermore, the results highlight the importance of keeping a good interaction between the self and the family for daily recovery and performance.     

The organization of children's secure base behaviour in two-parent Portuguese families and father's participation in child-related activities

The organization of children's secure base behaviour was studied in two-parent Portuguese families, with 44 father–child and mother–child dyads, children's age was on average 31.91 months. An analysis of Attachment Q-sort (AQS; Waters, 1995 Waters, E. 1995. “Appendix A: Attachment Q-set (version 3.0)”. In Caregiving, cultural, and cognitive perspectives on secure base behavior and working models: New growing points of attachment theory and research Edited by: Waters, E., Vaughn, B. E., Posada, G. and Kondon-Ikemura, K. Monographs of the Society for Research in the Child Development, 60(2–3), 234–246 [Google Scholar]) data revealed no significant differences in security scores for mothers and fathers. Both parents independently responded to a questionnaire about their participation in child-related activities, relative to their spouse's participation in these activities. A traditional division in the Care/Organization tasks and a shared participation in the Play/Leisure activities emerged. Fathers with higher scores for both types of activities tended to have children with higher security scores. Fathers' participation in Play/Leisure activities was associated with children's AQS scores with their mothers. In this sample father's participation is positively associated with the quality of secure base relationships within the family context.