Effector-specific improvements in action prediction in left-handed individuals after short-term physical practice.

Research has established the influence of short-term physical practice for enhancing action prediction in right-handed (RH) individuals. In addition to benefits of physical practice for these later assessed perceptual-cognitive skills, effector-specific interference has been shown through action-incongruent secondary tasks (motor interference tasks). Here we investigated this experience-driven facilitation of action predictions and effector-specific interference in left-handed (LH) novices, before and after practicing a dart throwing task. Participants watched either RH (n = 19) or LH (n = 24) videos of temporally occluded dart throws, across a control condition and three secondary-task conditions: tone-monitoring, RH or LH force monitoring. These conditions were completed before and after physical practice throwing with the LH. Significantly greater improvement in prediction accuracy was shown post-practice for the LH- versus RH-video group. Consistent with previous work, effector-specific interference was shown, exclusive to the LH-video group. Only when doing the LH force monitoring task did the LH-video group show secondary task interference in prediction accuracy. These data support the idea that short-term physical practice resulted in the development of an effector-specific motor representation. The results are also consistent with other work in RH individuals (showing RH motor interference) and hence rule out the interpretation that these effector specific effects are due to the disruption of more generalized motor processes, thought to be lateralized to the left-hemisphere of the brain.

What is 'disability'? Exploring the conceptions of internationally educated learners in a Canadian physical therapy bridging program.

BACKGROUND: Physiotherapists' understanding of disability has direct relevance for their practices and work with disabled people. PURPOSE: To explore how physiotherapists from diverse backgrounds, cultures and social locations conceptualize disability. Understanding their conceptualizations will provide insight to determine future directions regarding disability education, in healthcare education, to optimize the quality of care and life for individuals with disabilities. METHODS: Six internationally educated physiotherapists enrolled in a Canadian physical therapy bridging program were interviewed and data were analyzed for themes. RESULTS: Participants' conceptualizations of disability were complex and a dynamic process that reflected what was 'thinkable' in relation to experience, such as with social location and in personal, professional and educational domains. This primary theme was reflected in three subthemes: 1) Professional PT acculturation shaped disability conceptualization in particular ways; 2) Medical model as the dominant way of thinking; and 3) Social model thinking was more feasible in resource rich contexts. CONCLUSION: These results reinforce the benefits of a wide exposure to different ways of conceptualizing and addressing disability within PT education to counter the dominance of the medical model and reinforce the importance of advocacy and allyship with disabled people.