Browse

You are looking at 101 - 110 of 284 items for :

  • Psychology and Behavior in Sport/Exercise x
  • Sport and Exercise Science/Kinesiology x
  • Journal of Motor Learning and Development x
  • Refine by Access: All Content x
Clear All
Restricted access

Effects of Task Constraints on Countermovement Jump Kinematics Following a Short-Term Training

Amirhossein Emamian, Alireza Hashemi Oskouei, Rasoul Azreh, and Kevin Carroll

In previous studies, the acute effects of movement constraints on the countermovement jump performance are investigated; however, the longitudinal effects of implementing the constraint in a training regimen are not well studied. The purpose of this study was to examine the phenomenon of motor learning development due to application of task constraint in a training regimen following 6 weeks of training. Forty-five healthy adult males were randomly assigned to a control or one of two experimental constraint training groups (i.e., no arm swing or restricted knee flexion). Pre- and posttraining jump height and kinematic variables of six maximum effort countermovement jumps were compared longitudinally within the groups, and also compared between the groups. The findings of this study indicated that jump height significantly increased in all the groups while in the unrestricted control group it was increased greater than the experimental conditions (21% compared with 12% and 5.5%). However, the applied task constraints significantly improved some of the contributors to jump performance, establishing specific adaptation of kinematic variables to the constraint training. Therefore, constraint training approach could be suggested in case of demanding specific adaptation of kinematic variables of countermovement jump in a training regimen.

Restricted access

Dyad Training in a Perceptual-Motor Task: “Two Pairs of Eyes Are Better Than One”

Stefan Panzer, Christina Pfeifer, Peter Leinen, and Charles Shea

The aim of this experiment was to determine if dyad practice helped individuals become aware, use, and retain information in a dynamically changing perceptual-motor task compared with practice alone. We used a computerized perceptual-motor task, where individuals were required to intercept balls that dropped from the top of the screen. A colored line at the top of the screen provided information about the direction of the dropping ball. Participants (N = 24) were randomly assigned to one of two groups: A dyad training group where two participants alternated between physical and observational practice after each block of 20 trials, and they also engaged in dialog about the task, and an individual training group where one participant practiced the task. Both groups improved their accuracy during acquisition. On the retention test, participants in the dyad group caught significantly more balls (73%) than individuals of the alone group (58%). Participants in the dyad group also showed a higher percentage of correctly identified stimuli in the recognition task. Dyad training induced performance advantages in a perceptual-motor task because individuals became aware and used information acquired during observation and/or from the dialog.

Restricted access

Volume 10 (2022): Issue 1 (Apr 2022)

Open access

A Commentary on Whitall and Colleagues’ 2020 Article “Motor Development Research: II. The First Two Decades of the 21st Century Shaping Our Future”

Carl Gabbard

This commentary reflects on the discussions of Whitall et al.’s paper “Motor Development Research: II. The First Two Decades of the 21st Century Shaping Our Future.” Comments focus on (a) the emergence and importance of the Developmental Systems approach to motor development, (b) the perceived ambiguity between Dynamic and Developmental Systems approaches, and (c) a case for the evolution of Developmental Motor Neuroscience from the field of Developmental Cognitive Neuroscience.

Restricted access

Effectiveness of the Type of Feedback on Learning to Pass in Volleyball

Adrià López-Ferrer, Adrià Marco-Ahulló, Gonzalo Monfort-Torres, Jesús Ramón-Llin, Joao Alves de Moraes Filho,, and Xavier García-Massó

Objective: To determine which type of feedback (visual, verbal, or both combined) facilitates to a greater extent the learning of a specific skill (passing in volleyball). Methods: Three groups of students between 14 and 15 years of age belonging to the third year of Compulsory Secondary Education in a Spanish public high school (n = 58) were randomly assigned a type of feedback implemented in the part of the syllabus dedicated to volleyball. The students’ knowledge, motor performance, accuracy, and self-perception about the action were evaluated before and after the intervention and enjoyment afterwards. Results: All the groups obtained improvements in all the variables studied (p < .05); the verbal and visual feedback group was the one that obtained greater improvements, showing also a greater enjoyment than the visual feedback group. Conclusions: It has been found that the use of the combination of verbal and visual feedback is most recommended for learning a specific skill, such as passing in volleyball.

Open access

Motor Competence Among Children in the United Kingdom and Ireland: An Expert Statement on Behalf of the International Motor Development Research Consortium

Michael J. Duncan, Lawrence Foweather, Farid Bardid, Anna L. Barnett, James Rudd, Wesley O’Brien, Jonathan D. Foulkes, Clare Roscoe, Johann Issartel, Gareth Stratton, and Cain C.T. Clark

The United Kingdom and Ireland have a well-established research base in motor competence (MC) research, ranging from reporting and monitoring levels of MC, developing assessment tools for MC, providing innovative curriculum and intervention design to support learning and development, as well as providing advocacy for particular groups, such as those with motor impairments. This expert statement, on behalf of the International Motor Development Research Consortium, draws together what is currently known about levels of MC in the United Kingdom and Ireland as well as current approaches to intervention in both countries. Subsequently presented are recommendations for researchers and practitioners to advance the field of MC for the benefit of children and youth in the United Kingdom, Ireland, and worldwide.

Restricted access

Tennis Service Performance in Beginners: The Effect of Instructional Self-Talk Combined With Motor Imagery

Nicolas Robin, Robbin Carien, and Laurent Dominique

The aim of this study was to investigate the effect of motor imagery (MI) combined with instructional self-talk on service performance in young novice tennis players. The participants were assigned to one of three groups: control, MI, or MI + self-talk. They performed a pretest (10 serves), participated in 5 days of intervention sessions, and finally performed a posttest similar to the pretest. During the intervention sessions, the participants performed 20 serves. The control group was not given any instructions other than verbal instructions on the steps of the serve. Before each serve, the MI group was instructed to imagine performing a successful serve towards the “correct” service box. The MI + self-talk group had to repeat the instructions during MI before serving. The results of this original study revealed that only the participants in the MI and MI + self-talk groups increased their service percentage of success and technical quality scores from pre- to posttest. In addition, at posttest, the participants of the MI + self-talk group had higher serve speeds and technical quality scores than the participants of the control and MI groups. The beneficial effect of using MI and/or self-talk during short tennis interventions and the practical applications are discussed.

Restricted access

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

Alanna Weisberg, Hyun Suk Lee, Tak Fung, and Larry Katz

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.

Restricted access

Quantifying Infant Exploratory Learning

Jeong Ah Kim, Sungwoo Park, Linda Fetters, Sandrah P. Eckel, Masayoshi Kubo, and Barbara Sargent

Exploration is considered essential to infant learning, but few studies have quantified infants’ task exploration. The purpose of this study was to quantify how infants explored task space with their feet while learning to activate a kick-activated mobile. Data were analyzed from fifteen 4-month-old infants who participated in a 10-min mobile task on 2–3 consecutive days. Infants learned that their vertical leg movements above a systematically increased threshold height activated the mobile. Five kinematic variables were analyzed: (a) exploration space volume, (b) exploration path length, (c) duration of time in the region of interest around the threshold that activated the mobile, (d) task-specific vertical variance of kicks, and (e) non-task-specific horizontal variance of kicks. The infants increased their general spatial exploration, volume, and path, and the infants adapted their exploration by maintaining their feet within the region of interest, although the task-specific region increased in height as the threshold increased. The infants used task-specific strategies quantified by the increased variance of kicks in the vertical direction and no change in the horizontal variance of kicks. Quantifying infants’ task exploration may provide critical insights into how learning emerges in infancy and enable researchers to more systematically describe, interpret, and support learning.

Restricted access

No Fans, No Problem: An Investigation of Audience Effects on Shooting Performance in Professional Basketball

Logan T. Markwell, Andrew J. Strick, and Jared M. Porter

Sports, along with nearly all facets of life, have been impacted by the COVID-19 pandemic. The National Basketball Association quickly adopted a unique method to finish the 2019–2020 regular season and playoffs. The entire league quarantined for months in what was known as the “NBA bubble” where games were played in spectator-less arenas. During this time, increases in shooting accuracy were reported, suggesting that free throws and field goals were made at record-breaking levels. This study examined differences in free throw shooting accuracy with and without spectators. Archival data were retrieved and analyzed to evaluate the potential differences. Free throw shooting accuracy with and without spectators were examined in multiple analyses. Our examination revealed free throw percentages were significantly greater in spectator-less arenas compared with the 2018 and 2019 seasons with spectators. Changes of the environmental characteristics, due to spectator-less arenas, were likely contributors to the improved free throw phenomenon reported in this study.