Roslyn Boyd

Prof. Roslyn Boyd

Queensland Cerebral Palsy & Rehabilitation Research Centre, Child Health Research Centre, The University of Queensland, Brisbane, Australia
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Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 September 2021 in Developmental Medicine & Child Neurology
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Journal Article
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MJMichelle Jackman
Michelle Jackman
LSLeanne Nott Sakzewski
Leanne Nott Sakzewski
Catherine MorganCatherine Morgan
Catherine Morgan
RBRoslyn Boyd
Roslyn Boyd
SBSue E Brennan
Sue E Brennan
INIona Novak
Iona Novak

1 January 2014 in Pediatrics
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LSLeanne Nott Sakzewski
Leanne Nott Sakzewski
JZJenny Ziviani
Jenny Ziviani
RBRoslyn Boyd
Roslyn Boyd
BACKGROUND AND OBJECTIVE: Children with unilateral cerebral palsy present with impaired upper limb (UL) function affecting independence, participation, and quality of life and require effective rehabilitation. This study aims to systematically review the efficacy of nonsurgical upper limb therapies for children with unilateral cerebral palsy. METHODS: Medline, CINAHL (Cumulative Index to Nursing and Allied Health Literature), Embase, the Cochrane Central Register of Controlled Trials, and PubMed were searched to December 2012. Randomized controlled or comparison trials were included. RESULTS: Forty-two studies evaluating 113 UL therapy approaches (N = 1454 subjects) met the inclusion criteria. Moderate to strong effects favoring intramuscular injections of botulinum toxin A and occupational therapy (OT) to improve UL and individualized outcomes compared with OT alone were identified. Constraint-induced movement therapy achieved modest to strong treatment effects on improving movement quality and efficiency of the impaired UL compared with usual care. There were weak treatment effects for most outcomes when constraint therapy was compared with an equal dose (amount) of bimanual OT; both yielded similar improved outcomes. Newer interventions such as action observation training and mirror therapy should be viewed as experimental. CONCLUSIONS: There is modest evidence that intensive activity-based, goal-directed interventions (eg, constraint-induced movement therapy, bimanual training) are more effective than standard care in improving UL and individualized outcomes. There is little evidence to support block therapy alone as the dose of intervention is unlikely to be sufficient to lead to sustained changes in UL outcomes. There is strong evidence that goal-directed OT home programs are effective and could supplement hands-on direct therapy to achieve increased dose of intervention.

1 May 2017 in Gait & Posture
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HKHans Kainz
Hans Kainz
DGDavid Graham
David Graham
JEJulie Edwards
Julie Edwards
HWHenry P.J. Walsh
Henry P.J. Walsh
SMSheanna Maine
Sheanna Maine
CCChristopher P. Carty
Christopher P. Carty
Three-dimensional gait analysis (3DGA) has become a common clinical tool for treatment planning in children with cerebral palsy (CP). Many clinical gait laboratories use the conventional gait analysis model (e.g. Plug-in-Gait model), which uses Direct Kinematics (DK) for joint kinematic calculations, whereas, musculoskeletal models, mainly used for research, use Inverse Kinematics (IK). Musculoskeletal IK models have the advantage of enabling additional analyses which might improve the clinical decision-making in children with CP. Before any new model can be used in a clinical setting, its reliability has to be evaluated and compared to a commonly used clinical gait model (e.g. Plug-in-Gait model) which was the purpose of this study. Two testers performed 3DGA in eleven CP and seven typically developing participants on two occasions. Intra- and inter-tester standard deviations (SD) and standard error of measurement (SEM) were used to compare the reliability of two DK models (Plug-in-Gait and a six degrees-of-freedom model solved using Vicon software) and two IK models (two modifications of 'gait2392' solved using OpenSim). All models showed good reliability (mean SEM of 3.0° over all analysed models and joint angles). Variations in joint kinetics were less in typically developed than in CP participants. The modified 'gait2392' model which included all the joint rotations commonly reported in clinical 3DGA, showed reasonable reliable joint kinematic and kinetic estimates, and allows additional musculoskeletal analysis on surgically adjustable parameters, e.g. muscle-tendon lengths, and, therefore, is a suitable model for clinical gait analysis.

14 March 2011 in Developmental Medicine & Child Neurology
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LSLeanne Nott Sakzewski
Leanne Nott Sakzewski
JZJenny Ziviani
Jenny Ziviani
DADavid F Abbott
David F Abbott
RMRichard A L Macdonell
Richard A L Macdonell
GJGraeme D Jackson
Graeme D Jackson
RBRoslyn Boyd
Roslyn Boyd
Aim  To determine if constraint‐induced movement therapy (CIMT) is more effective than bimanual training (BIM) in improving upper limb activity outcomes for children with congenital hemiplegia in a matched‐pairs randomized trial.Method  Sixty‐three children (mean age 10.2, SD 2.7, range 5–16y; 33 males, 30 females), 16 in Manual Ability Classification System level I, 46 level II, and 1 level III and 16 in Gross Motor Function Classification level I, 47 level II) were randomly allocated to either CIMT or BIM group day camps (60 hours over 10 days). The Melbourne Assessment of Unilateral Upper Limb Function assessed unimanual capacity of the impaired limb and Assisting Hand Assessment evaluated bimanual coordination at baseline, 3 and 26 weeks, scored by blinded raters.Results  After concealed random allocation, there was no baseline difference between groups. CIMT had superior outcomes compared with BIM for unimanual capacity at 26 weeks (estimated mean difference [EMD] 4.4, 95% confidence interval [CI] 2.2–6.7; p<0.001). There was no other significant difference between groups post‐intervention. Both groups demonstrated significant improvements in bimanual performance at 3 weeks, with gains maintained by BIM at 26 weeks (EMD 2.3; 95% CI 0.6–4.0; p=0.008).Interpretation  Overall, there were only small differences between the two training approaches. CIMT yielded greater changes in unimanual capacity of the impaired upper limb compared with BIM. Results generally reflect specificity of practice, with CIMT improving unimanual capacity and BIM improving bimanual performance. Considerable inter‐individual variation in response to either intervention was evident. Future research should consider serial sequencing unimanual then BIM approaches to optimize upper limb outcomes for children with congenital hemiplegia.

18 December 2009 in Developmental Medicine & Child Neurology
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RGRose Gilmore
Rose Gilmore
LSLeanne Nott Sakzewski
Leanne Nott Sakzewski
RBRoslyn Boyd
Roslyn Boyd

26 March 2011 in European Journal of Applied Physiology
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KCKelly M. Clanchy
Kelly M. Clanchy
STSean M Tweedy
Sean M Tweedy
RBRoslyn Boyd
Roslyn Boyd
Stewart TrostStewart Trost
Stewart Trost