Acute exercise and children’s cognitive functioning: What is the optimal dose of cognitive challenge?

Acute bouts of exercise have the potential to benefit children’s cognition. Inconsistent evidence on the role of qualitative exercise task characteristics calls for further investigation of the cognitive challenge level in exercise. Thus, the study aim was to investigate which “dose” of cognitive challenge in acute exercise benefits children’s cognition, also exploring the moderating role of individual characteristics. In a within-subject experimental design, 103 children (M_age = 11.1, SD = 0.9, 48% female) participated weekly in one of three 15-min exergames followed by an Attention Network task. Exergame sessions were designed to keep physical intensity constant (65% HR_max) and to have different cognitive challenge levels (low, mid, high; adapted to the ongoing individual performance). ANOVAs performed on variables that reflect the individual functioning of attention networks revealed a significant effect of cognitive challenge on executive control efficiency (reaction time performances; p = .014, ƞ²_p = .08), with better performances after the high-challenge condition compared to lower ones (ps < .015), whereas alerting and orienting were unaffected by cognitive challenge (ps > .05). ANOVAs performed on variables that reflect the interactive functioning of attention networks revealed that biological sex moderated cognitive challenge effects. For males only, the cognitive challenge level influenced the interactive functioning of executive control and orienting networks (p = .004; ƞ²_p = .07). Results suggest that an individualized and adaptive cognitively high-challenging bout of exercise is more beneficial to children’s executive control than less challenging ones. For males, the cognitive challenge in an acute bout seems beneficial to maintain executive control efficiency also when spatial attention resources cannot be validly allocated in advance. Results are interpreted referring to the cognitive stimulation hypothesis and arousal theory.     

Parent’s physical literacy enhances children’s values towards physical activity: A serial mediation model

PurposePhysical literacy is a multidimensional concept that concerns the affective, physical, cognitive, and behavioural aspects of physical activity (PA). It plays a vital role in enhancing PA engagement. However, current research on physical literacy’s function in the family setting is scarce. Its potential effect in elevating values towards PA among parents and children is also understudied. In this study, we examined the predicting role of parents’ physical literacy on children’s values towards PA. We also explored the potential mediating roles of parents’ values towards PA and children’s perceived parental autonomy support for PA through a serial mediation model.MethodsA cross-sectional study was conducted between September 2020 and January 2021, a total of 946 primary school-age children (6–13 years) and their parents from 30 Hong Kong primary schools were recruited by cluster sampling method. Structural equation modelling analysis was conducted using Mplus 7.3.ResultsParents’ values towards PA and children’s perceived parental autonomy support for PA serially mediated between parents’ physical literacy and children’s values towards PA. Specifically, the indirect effects from parents’ physical literacy to children’s values towards PA via parents’ values towards PA (β = 0.12, 95% CI [0.06, 0.17]), and via parents’ values towards PA to children’s perceived parental autonomy support for PA (β = 0.05, 95% CI [0.02, 0.08]) were significant.ConclusionsParents’ physical literacy is a predictor of children’s values towards PA. Parental autonomy support may facilitate the intergenerational transmission of values towards PA between parents and children. Concurrent interventions that target enhancing parents’ physical literacy and parental autonomy support for PA in the family context may be more effective in raising children’s PA values.