The energy cost for the step-to-step transition in amputee walking

Houdijk, Han; Pollmann, Eveline; Groenewold, Marlies; Wiggerts, Han; Polomski, Wojtek

doi:10.1016/j.gaitpost.2009.02.009

Cited by 139 publications

(147 citation statements)

References 27 publications

(39 reference statements)

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“…Looking in isolation at collision cost during the step-to-step transition might thus be useful to investigate the energy cost of other pathological gaits. This has recently also been demonstrated for the energy cost of walking in people after lower limb amputation (Houdijk, Pollman, Groenewold, Wiggerts, & Polomski, 2009). …”

Section: Discussionmentioning

confidence: 67%

Metabolic cost and mechanical work for the step-to-step transition in walking after successful total ankle arthroplasty

Doets

Vergouw

Veeger

et al. 2009

Human Movement Science

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The aim of this study was to investigate whether impaired ankle function after total ankle arthroplasty (TAA) affects the mechanical work during step-to-step transition and the metabolic cost of walking. Respiratory and force plate data were recorded in 11 patients and 11 healthy controls while they walked barefoot at a fixed walking speed (FWS, 1.25 m/s) and at their self-selected speed (SWS). At FWS metabolic cost of transport was 28% higher for the TAA group, but at SWS there was no significant increase. During the stepto-step transition, positive mechanical work generated by the trailing TAA leg was lower and negative mechanical work in the leading intact leg was larger. Despite the increase in mechanical work dissipation during double support, no significant differences in total mechanical work were found over a complete stride. This might be a result of methodological limitations of calculating mechanical work. Nevertheless, mechanical work dissipated during the step-to-step transition at FWS correlated significantly with metabolic cost of transport: r = .540. It was concluded that patients after successful TAA still experienced an impaired lower leg function, which contributed to an increase in mechanical energy dissipation during the step-to-step transition, and to an increase in the metabolic demand of walking.

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Section: Discussionmentioning

confidence: 67%

Metabolic cost and mechanical work for the step-to-step transition in walking after successful total ankle arthroplasty

Doets

Vergouw

Veeger

et al. 2009

Human Movement Science

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“…In clinical populations with decreased ankle push-off capabilities (e.g. individuals with lower-limb amputation wearing conventional passive prosthetic feet), COM push-off has also been observed to decrease Caputo and Collins, 2014;Collins and Kuo, 2010;Herr and Grabowski, 2012;Houdijk et al, 2009;Zelik et al, 2011), further supporting the contention that the burst of ankle push-off work contributes to energy changes of the COM. When ankle push-off was increased in a prosthesis (e.g.…”

Section: Com Accelerationmentioning

confidence: 83%

“…For instance, the push-off-collision hypothesis (Adamczyk and Kuo, 2009;Kuo, 2002;Kuo et al, 2005;Ruina et al, 2005) has led to a variety of empirical observations, some in apparent support of this hypothesis (e.g. Adamczyk and Kuo, 2015;Houdijk et al, 2009;Huang et al, 2015;Jackson and Collins, 2015;Segal et al, 2012;Soo and Donelan, 2012;van Engelen et al, 2010) and some in apparent contradiction (e.g. Caputo and Collins, 2014;Malcolm et al, 2015;Vanderpool et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

A unified perspective on ankle push-off in human walking

Zelik

Adamczyk

2016

Journal of Experimental Biology

116

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Muscle-tendon units about the ankle joint generate a burst of positive power during the step-to-step transition in human walking, termed ankle push-off, but there is no scientific consensus on its functional role. A central question embodied in the biomechanics literature is: does ankle push-off primarily contribute to leg swing, or to center of mass (COM) acceleration? This question has been debated in various forms for decades. However, it actually presents a false dichotomy, as these two possibilities are not mutually exclusive. If we ask either question independently, the answer is the same: yes! (1) Does ankle push-off primarily contribute to leg swing acceleration? Yes. (2) Does ankle push-off primarily contribute to COM acceleration? Yes. Here, we summarize the historical debate, then synthesize the seemingly polarized perspectives and demonstrate that both descriptions are valid. The principal means by which ankle push-off affects COM mechanics is by a localized action that increases the speed and kinetic energy of the trailing push-off limb. Because the limb is included in body COM computations, this localized segmental acceleration also accelerates the COM, and most of the segmental energy change also appears as COM energy change. Interpretation of ankle mechanics should abandon an either/ or contrast of leg swing versus COM acceleration. Instead, ankle push-off should be interpreted in light of both mutually consistent effects. This unified perspective informs our fundamental understanding of the role of ankle push-off, and has important implications for the design of clinical interventions (e.g. prostheses, orthoses) intended to restore locomotor function to individuals with disabilities.

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“…The importance of the relation found between muscle activity of TRAIL and results obtained in subjects with ankle impairment, as it was observed that both decreased TRAIL positive work 25 and increased LEAD negative work 23 were related to increased metabolic cost of walking.…”

Section: Discussionmentioning

confidence: 95%

“…Only the mechanical power and metabolic power were calculated as these variables have been demonstrated to be correlated 23,25 , and because the mechanical power has been described as the major time-varying variable that can be tracked from mechanical energy based analysis 26 .…”

Section: B) Kinetic Parametersmentioning

confidence: 99%

Interlimb relation during the double support phase of gait: An electromyographic, mechanical and energy-based analysis

Sousa

Silva

Tavares

2013

Proc Inst Mech Eng H

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Purpose: To analyse the interlimb relation and the influence of mechanical energy on metabolic energy expenditure during gait. Methods: 22 subjects were monitored as to electromyographic activity (EMG), ground reaction forces (GRF) and VO 2 consumption (metabolic power) during gait. Results: A moderate negative correlation was observed between the activity of tibialis anterior (TA), biceps femoris (BF) and vastus medialis (VM) of the trailing limb (TRAIL) during mid-stance to double support transition (MS-DS) and that of the leading limb (LEAD) during DS for the same muscles, and between these and gastrocnemius medialis (GM) and soleus (SOL) of the TRAIL during DS.TRAIL SOL during MS-DS was positively correlated to LEAD TA, VM and BF during DS. Also, the TRAIL centre of mass (CoM) mechanical work was strongly influenced by the LEADs, although only the mechanical power related to forward progression of both limbs was correlated to metabolic power. Conclusion: A consistent interlimb relation was observed in terms of EMG and CoM mechanical work, being the relations occurred in the plane of forward progression the more important to gait energy expenditure.

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The energy cost for the step-to-step transition in amputee walking

Cited by 139 publications

References 27 publications

Metabolic cost and mechanical work for the step-to-step transition in walking after successful total ankle arthroplasty

Metabolic cost and mechanical work for the step-to-step transition in walking after successful total ankle arthroplasty

A unified perspective on ankle push-off in human walking

Interlimb relation during the double support phase of gait: An electromyographic, mechanical and energy-based analysis

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