The attentional demands of preferred and non-preferred gait patterns

Abernethy, Bruce; Hanna, Alastair; Plooy, Annaliese M.

doi:10.1016/s0966-6362(01)00195-3

Cited by 81 publications

(59 citation statements)

References 44 publications

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“…Perhaps one explanation for an experimentwide magnet effect lies in attention to instructions (Abernethy, Hanna, & Plooy, 2002;Monno, Chardenon, Temprado, Zanone, & Laurent, 2000) or intention to produce rhythmicity (Zanone, Monno, Temprado, & Laurent, 2001) which may result in a unique coordination dynamic for this set of tasks (Kelso, 1995). All participants were asked in all conditions to move at ''an even, comfortable speed'' without speeding up or slowing down.…”

Section: Dynamic Entrainment Of Limb Frequenciesmentioning

confidence: 99%

Age and task-related differences in timing stability, consistency, and natural frequency of children's rhythmic, motor coordination

Getchell

2006

Dev. Psychobiol.

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How does task complexity affect performance in a rhythmic movement task across childhood and into adulthood? The purpose of this experiment was to compare the frequency, stability, and consistency of clapping and walking when these tasks were produced individually and simultaneously by children of different ages. Statistically significant differences were found in natural frequency, stability, and consistency between tasks, limb actions, and among age groups. The results indicated that action-dependent, age-related differences existed. Further, task-related differences existed in these measures that were constant across age groups. This suggested that the role of task was as important as changing morphologies in determining action characteristics across childhood.

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Section: Dynamic Entrainment Of Limb Frequenciesmentioning

confidence: 99%

Age and task-related differences in timing stability, consistency, and natural frequency of children's rhythmic, motor coordination

Getchell

2006

Dev. Psychobiol.

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“…Walking is generally regarded as an activity that requires minimal attention [142][143]. However, ambulation with a transfemoral prosthesis may necessitate greater concentration due to the loss of traditional peripheral sensorimotor structures in the lower limb, an increased reliance on visual information for afferent input [29,46], and the need to focus on stabilizing the prosthetic knee with the remaining proximal musculature [29,46].…”

Section: Cognitive Demandmentioning

confidence: 99%

Outcomes associated with the use of microprocessor-controlled prosthetic knees among individuals with unilateral transfemoral limb loss: A systematic review

Sawers¹,

Hafner²

2013

JRRD

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Abstract-Microprocessor-controlled prosthetic knees (MPKs) have been developed as an alternative to non-microprocessorcontrolled knees (NMPKs) to address challenges facing individuals with lower-limb loss. A body of scientific literature comparing MPKs and NMPKs exists but has yet to be critically appraised. Therefore, we conducted a systematic review to examine outcomes associated with the use of these interventions among individuals with transfemoral limb loss. A search of biomedical databases identified 241 publications, of which 27 met the inclusion and exclusion criteria and were reviewed for methodological quality and content. We developed 28 empirical evidence statements (EESs) in 9 outcome categories (metabolic energy expenditure, activity, cognitive demand, gait mechanics, environmental obstacle negotiation, safety, preference and satisfaction, economics, and health and quality of life) based on findings in the literature. The level of evidence supporting these EESs varied due to quantity, quality, and consistency of the results. EESs supported by a moderate level of evidence that noted significant differences between MPKs and NMPKs were derived in five of the nine outcome categories. The results from this review suggest that evidence exists to inform clinical practice and that additional research is needed to confirm existing evidence and better understand outcomes associated with the use of NMPKs and MPKs.Key words: amputation, artificial limb, function, gait, knee, microprocessor, outcome, preference, rehabilitation, safety. Abbreviations: AAOP = American Academy of Orthotists andProsthetists, ABC = Activities-specific Balance Confidence, CWS = controlled walking speed, DLW = doubly labeled water, EBP = evidence-based practice, EES = empirical evidence statement, EV = external validity, GRF = ground reaction force, HAI = Hill Assessment Index, HRQL = health-related quality of life, IV = internal validity, LLL = lower-limb loss, MFCL = Medicare Functional Classification Level, MP = microprocessor, MPC = microprocessor control, MPK = microprocessor-controlled prosthetic knee, MRPP = Montreal Rehabilitation Performance Profile, NMPK = non-microprocessor-controlled prosthetic knee, O 2 = oxygen, O&P = orthotic and prosthetic, PAEE = physical activity-related energy expenditure, PCBS = Prosthetic Cognitive Burden Scale, PCI = physiological cost index, PEQ = Prosthesis Evaluation Questionnaire, PEQ-A = PEQ Addendum, PRO = patient-reported outcome, QALY = quality adjusted life year, QOL = quality of life, RPE = rating of perceived exertion, SAI = Stair Assessment Index, SF-36 = 36-Item Short-Form Health Survey, SOT = sensory organization test, SSWS = selfselected walking speed, SSC = State of the Science Conference, TDEE = total daily energy expenditure, TFLL = transfemoral limb loss.

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“…Average values and standard deviations for age, height and mass can be found in Table 1. Subjects were selected on sex, height, being minimal 1.65 m and maximal 1.75 m to rule out any possible influence of height and leg length, although only weak correlations have been found between anthropometric variables and transition speed [6,15,[17][18][19]. The ethical committee of the Ghent University Hospital approved the experimental protocol.…”

Section: Subjectsmentioning

confidence: 99%

“…Most researchers believe that transition is an explicit event, based on findings in walking and running at different discrete constant speeds in the proximity of transition [14][15][16][17][18][19][20]. Li and Hamill [21], however, observed a gradual change in the ground reaction force pattern of the last steps before the transition point in a protocol with gradually changing speed.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal characteristics of the walk-to-run and run-to-walk transition when gradually changing speed

et al. 2006

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The purpose of this study was to examine spatiotemporal parameters of the walk-to-run transition (WRT) and run-to-walk transition (RWT) when speed is altered with different constant accelerations. Twenty women (height: 168.9 AE 3.36 cm) performed three accelerations (0.05, 0.07 and 0.1 m s À2) and three decelerations (À0.05, À0.07 and À0.1 m s À2) on a motor-driven treadmill. The transition step in the WRT (first step with a flight phase) and RWT (first step with a double stance phase) occurred at the same speed for all accelerations but these did not occur in the same way. The most striking difference was the presence of a transition step with specific spatiotemporal characteristics in the WRT, whereas this was not observed in the RWT.The transition is not a sudden one-step-event. WRT occurred before transition and consisted of a ''pre-transition period'' and the transition step whereas RWT occurred after transition and consisted of the transition step and a ''post-transition period''. Both transition periods were characterized by an exponential evolution of step frequency and step length.Step frequency and step length showed a linear evolution before and after transition.The flight phase of the transition step in the WRT reached a minimum with comparable duration of the last flight phase in the RWT. The flight phase could be considered as an intrinsic dynamical factor of transition. Further research in kinematics, the trajectory of the body centre of mass and energy fluctuations will give more insight in these transitions. #

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The attentional demands of preferred and non-preferred gait patterns

Cited by 81 publications

References 44 publications

Age and task-related differences in timing stability, consistency, and natural frequency of children's rhythmic, motor coordination

Age and task-related differences in timing stability, consistency, and natural frequency of children's rhythmic, motor coordination

Outcomes associated with the use of microprocessor-controlled prosthetic knees among individuals with unilateral transfemoral limb loss: A systematic review

Spatiotemporal characteristics of the walk-to-run and run-to-walk transition when gradually changing speed

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