Impact of Engaging the Nonthrowing Arm on Maximal Ball Velocity From an Overhand Throw With Both the Dominant and Nondominant Arms: A Pilot Study

The overhand throw is a complex whole-body motor skill that is fundamental to many sports and activities. When throwing properly, the momentum generated to complete the movement begins in the lower body and transfers through the trunk to the throwing arm. This proof-of-concept study’s primary purpose was to evaluate the impact of the nonthrowing arm on the ball speed during an overhand throw with both the dominant and nondominant arms. Eighteen participants (age: 20.20 ± 2.90 years, nine women) were divided into two intervention groups: a pulling group taught to engage the nonthrowing arm through a pull toward the body and a nonpulling group taught the overhand throw using a component-based physical education curriculum. Each participant completed 12 total throws, six for each side (dominant and nondominant arm). Ball speed and kinematic data were collected using an eight-camera motion analysis system and were assessed using a pre–post study design. The two groups showed significant improvements pre–post when throwing with both the dominant and nondominant arms. Based on effect size comparisons, engaging the nonthrowing arm makes a meaningful difference in maximal ball velocity.

Evaluation of Overhand Throwing Among College Students With and Without Autism Spectrum Disorder

Children with autism spectrum disorder (ASD) typically demonstrate deficits in gross motor skills such as the overhand throw. It has not been determined whether such deficits persist into adulthood. Therefore, the purpose of this study was to examine the kinematics and developmental level of overhand throws among young adults with and without ASD. Three-dimensional motion-capture data were collected during overhand throwing trials performed by 20 college students (10 students with ASD). Individuals with ASD demonstrated similar throw duration, stride length, and step width but a longer acceleration phase and slower ball velocity than individuals without ASD. Young adults with ASD also performed the overhand throw with less developmental proficiency than those without ASD. Specifically, individuals with ASD exhibited developmental deficits in the backswing and composite throwing score. Motor skill interventions for individuals with ASD should address throwing skills, with a particular focus on the preparatory phase of the overhand throw.

Functional Movement Proficiency’s Association to Actual and Perceived Motor Competence

The adoption of compensatory movement patterns occurs when limitations in mobility, stability, or motor control prevent proper motion from occurring. These dysfunctional movements may inhibit fundamental motor skill development and negatively influence perceived movement competence, impeding the development of physical literacy. Therefore, this study examined the relationship between functional movement and perceived and actual motor skill competence in young adolescents. Functional movement proficiency was determined using the Functional Movement Screen (FMS™), which provides three variables of interest: (a) FMS™ total score, (b) number of asymmetries, and (c) number of movement pattern dysfunctions. Perceived physical competence was assessed through the Children and Youth Physical Self-Perception Profile. Finally, the Get Skilled: Get Active process-oriented motor skill assessment was used to evaluate vertical jump, kick, run, and overhand throw proficiency. A significant positive correlation between FMS™ total score and vertical jump performance was found. A positive relationship was also found between the number of asymmetries and overhand throw performance. The Children and Youth Physical Self-Perception Profile constructs of body attractiveness and physical condition were positively associated with FMS™ total score, and physical condition was also shown to be inversely related to the number of movement pattern dysfunctions. Results suggest that functional movement may underpin movement competence and confidence.

Kids Active: Evaluation of an Educator-Led Active Play and Fundamental Movement Skill Intervention in the Irish Preschool Setting

The Kids Active program was developed with the aim of increasing physical activity (PA) and fundamental movement skill (FMS) levels of children in preschool services in Ireland through training educators to encourage active play opportunities. In this study, the impact of a six-week pilot program on educator confidence, as well as children’s PA levels and FMS proficiency, is evaluated. Educators’ (n = 32) confidence to teach PA was measured through questionnaire, while data (anthropometric data, PA via accelerometry, and proficiency in four FMS; run, vertical jump, overhand throw, and catch) were collected from 141 children in five intervention and four control services. Educators in the intervention group achieved significantly higher confidence scores at post-intervention testing in comparison to the control group. No significant differences between control and intervention groups were found for children’s PA across the three-hour period. Children in the intervention group significantly increased scores in the overhand throw. Small positive changes in educator confidence to teach PA and in children’s performance of the skill of overhand throw indicate potential effects of the Kids Active intervention that warrant further investigation of efficacy over longer periods of time.