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Larissa True, Ali Brian, Jackie Goodway, and David Stodden

Motor competence is associated with psychological and physical health outcomes. A reciprocal relationship between motor competence and perceptions of physical competence exists, but the developmental trajectory of the motor competence/perceived competence relationship is not well understood. Standardized assessments take a product- or process-oriented approach, but research concerning the motor competence/perceived competence relationship is limited to using process-oriented assessments. It is unknown whether boys and girls use product and process information differentially in the development of perceived competence. Children (N = 411) were aggregated into age groups. Perceived competence and product and process aspects of motor competence were assessed. Older children were more skillful than younger children but reported lower perceived competence. The motor competence/perceived competence association increased for both motor competence measures across age groups. Girls demonstrated stronger associations between process measures of motor competence and perceived competence, while boys indicated stronger associations between product measures of motor competence and perceived competence. When both motor competence measures were used to predict perceived competence, more variance in perceived competence was explained, compared with using independent predictors. The strength of the prediction increased across age groups, indicating that motor competence is a stronger predictor of perceived competence in older children.

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Sally Taunton Miedema, Ali Brian, Adam Pennell, Lauren Lieberman, Larissa True, Collin Webster, and David Stodden

Many interventions feature a singular component approach to targeting children’s motor competency and proficiency. Yet, little is known about the use of integrative interventions to meet the complex developmental needs of children aged 3–6 years. The purpose of this study was to examine the effects of an integrative universally designed intervention on children with and without disabilities’ motor competency and proficiency. We selected children (N = 111; disability = 24; no disability = 87) to participate in either a school-based integrative motor intervention (n = 53) or a control condition (n = 58). Children in the integrative motor intervention both with and without disabilities showed significant improvement in motor competency and proficiency (p < .001) as compared with peers with and without disabilities in a control condition. Early childhood center directors (e.g., preschool and kindergarten) should consider implementing integrative universally designed interventions targeting multiple aspects of motor development to remediate delays in children with and without disabilities.

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Jordyn A. Naylon, Mark A. Sutherlin, Larissa True, and Kevin D. Dames

Context: Previous work has demonstrated an improvement in running economy during sustained running on a lower body positive pressure treadmill, but neuromuscular and spatiotemporal measures have only been investigated during short-duration running bouts on these devices. The current study sought to replicate the noted metabolic response and investigate whether neuromuscular and/or spatiotemporal adaptations underlie the noted improvements in running economy. Design: Cross-sectional. Methods:Fifteen trained runners (11 males and 4 females) ran three 15-minute trials with 30% bodyweight support at 70% of the speed that elicited their peak oxygen consumption while running on a standard treadmill. A series of 1-way analyses of variance with repeated measures were used to explore differences in dependent variables over the 45 minutes of running. Dependent variables included oxygen consumption, root-mean-square electromyography of the vastus medialis and medial gastrocnemius during stance, and spatiotemporal parameters. Results: Oxygen consumption decreased after the initial exposure, with no further reductions after 20 minutes. Root-mean-square electromyography of the vastus medialis and medial gastrocnemius also decreased over time, with no further reductions after 20 and 10 minutes, respectively. No differences in spatiotemporal parameters were found. Conclusions: Future research should provide sufficient time for runners to develop a more economical gait pattern prior to collecting dependent variables, and previous findings using lower body positive pressure treadmills may need to be reconsidered. Athletes using these devices for training or rehabilitation should note that increased economy will lower the intensity of a given treadmill setting over time.