Sex Differences in Perceived Motor Competence After the Children's Health Activity Motor Program Intervention.

This study examined the effects of a motor-skill intervention on children's perceived motor competence (PMC; object control, locomotor, and combined [total]) and explored if effects differed between the sexes. Preschoolers (N = 274; 47.96 months) completed either a motor-skill intervention (the Children's Health Activity Motor Program [CHAMP]) or recess. PMC was measured with the Digital Scale of PMC before and after each condition. Controlling for pretest scores, recess girls had lower posttest object-control PMC scores than CHAMP boys, CHAMP girls, and recess boys (all p < .05). CHAMP children had significantly higher posttest locomotor and total PMC (all p < .001) compared with children who engaged in recess. CHAMP partially eliminates sex differences in PMC, particularly for object-control skills. Girls who participated in recess did not increase PMC like children in CHAMP and boys who engaged in outdoor recess.

Performance Metrics From Product-Oriented Measures of Fundamental Motor Skills-A Comparison and Developmental Perspective.

This study (a) examined the associations among different performance metrics derived from different strategies (i.e., maximum and average scores) and trials from product-oriented measures of motor skills, and (b) explored how different performance metrics from product-oriented assessments of motor skills change in young children with typical development. Children (N = 279; 156 girls; Mage = 4.44 years) completed a battery of product-oriented assessments for throwing (in meters per second, five trials); kicking (in meters per second, five trials); jumping (in centimeters, five trials); running (in meters per second, two trials); and hopping (in meters per second, four trials-two preferred foot, two nonpreferred foot). A total of 36 performance metrics were derived-throw (n = 7), kick (n = 7), jump (n = 7), run (n = 4), and hop (n = 11). Intraclass correlations examined reliability among performance metrics for each skill; linear mixed models examined whether variations changed across early childhood. There was excellent reliability among all performance metrics for each skill (all ICC> .90). Linear mixed models revealed that children's motor performance improved for two metrics of the throw, five variations of the jump, and three metrics of the hop (all p <.05). Researchers should be aware that some performance metrics from product-oriented assessments (e.g., maximum and average of three or five trials) are highly related and change, whereas others do not.

Perceived Physical Competence Predicts Gains in Children's Locomotor but Not Ball Skills across an Intervention.

The purpose of this pre/post experimental study was to examine if children's perceived physical competence predicted changes in motor skills across an intervention. Sixty-seven children (Mage = 53.2 ± 3.7 months) participated in a 16-week, mastery-climate motor skill intervention. Perceived physical competence was assessed before the intervention using the physical competence subscale of the Pictorial Scale of Perceived Competence and Social Acceptance for Young Children. Motor skills were assessed using the Test of Gross Motor Development-3rd Edition before and after the intervention. Results revealed that controlling for pretest skills, perceived physical competence significantly predicted posttest locomotor (p < 0.05) and total skills (p < 0.05) but did not predict posttest ball skills (p > 0.05). These results indicate that perceived physical competence may be a significant factor that predicts children's gains in locomotor or total skills, but not ball skills, across an intervention.