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The Accuracy of Joint Repositioning during Replication of Whole Body Positions in Healthy Young Adults

Sarin, Beverly, Angotti, Daniella, Phillips, Laura and Thompson, Kate 2012. The Accuracy of Joint Repositioning during Replication of Whole Body Positions in Healthy Young Adults. Presented at: The 4th International Conference of Physiotherapists in Psychiatry and Mental Health, Edinburgh, Scotland, UK, 8-10 February 2012.

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Abstract

Relevance Proprioceptive awareness of joint positioning enables individuals to maintain an accurate picture of their body’s segmental alignment and position relative to the environment. It is necessary for accurate movement production, skill development and postural control enabling efficient engagement in functional and leisure activities. Identifying how accurate individual joint proprioception is within whole body sensory feedback enables us to provide a baseline of accuracy expectations to judge deviations. Participants 20 Cardiff University students (18-35 years) consented to participate in this unfunded BSc Physiotherapy study. Exclusion criteria: history of head injury, joint injuries, balance or proprioceptive dysfunction. Ethical approval gained through Cardiff University. Methods An Experimental same-subject repeated measures design used digital video recording of positioning/repositioning of a whole body movement using SiliconCOACH video analysis software. Measurement targets were marked for shoulder, hip, knee and ankle joints. Participants performed a basic squat position, stood up, then replicated the 1st squat. Eyes were closed to eliminate visual cues and squat position was based on standardised instructions. The squat cycle was measured 3 times in total. Analysis Joint angles were measured for each squat cycle for the 4 joints. The differences between 1st and 2nd squat angles were calculated as the ‘Joint Repositioning Error’ (JRE) in degrees of joint range as a measurement of proprioceptive accuracy. The mean, standard deviations and range, Analysis of Variance (ANOVA) for repeated measures and Standard Error of Measurements (SEM) were calculated. Results JRE means, standard deviations (SD) and ranges in degrees were: Shoulder 2.622 (SD 1.056) 0.0-8.67; Hip 2.456 (SD 1.15) 0.0-9.67; Knee 2.456 (SD 1.15) 0.0-10.67; Ankle 2.183 (SD 1.156) 0.0-8.33. ANOVAs were non-significant. SEM (degrees) were: Shoulder 1.77; Hip 2.05; Knee 1.89; Ankle 1.81. Conclusions/Implications Healthy young adults are able to reproduce specific joint positions within whole body repositioning to within a few degrees. JRE variability within this cohort ranged from 0.0-10.67 degrees across the 4 joints, however means remain relatively low. Potential sources of errors were investigated. Tester/instrumental errors were eliminated by use of instrumentation with confirmed reliability for single rater assessment and protocol standardisation; ANOVAs showed there were no significant differences between the repeated measurements taken; and normal variability within the population was identified as between 1.77-2.05 degrees across the joints. Clinical acceptability of the degree of JRE should be judged against specific joint function and the accuracy needs of the task being undertaken. Further investigation using JRE could identify changes in proprioceptive accuracy due to age, mental health conditions, side-effects of medication as well as treatment intervention.

Item Type: Conference or Workshop Item (Paper)
Date Type: Completion
Status: Unpublished
Schools: Healthcare Sciences
Subjects: R Medicine > RM Therapeutics. Pharmacology
Uncontrolled Keywords: Proprioception, Joint Repositioning Error
Last Modified: 04 Jun 2017 03:01
URI: http://orca-mwe.cf.ac.uk/id/eprint/15349

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