Energy cost of walking in people after lower limb amputation: A systematic review and meta-analysis

Ettema, Sanne; Kal, Elmar; Houdijk, Han

doi:10.1016/j.gaitpost.2020.07.076

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Additionally, previous studies report that walking with a prosthesis requires more energy than walking for able-bodied [ 34 ]. The combination of higher energy costs in walking and the reduced CRF makes persons with LLA use a much larger part of their physical capacity which influences self-selected walking speed but also affect participation and quality of life [ 34 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

Cardiorespiratory fitness in persons with lower limb amputation

van Schaik,

Blokland,

van Kammen

et al. 2024

International Journal of Rehabilitation Research

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The aim of this study is to gain insight in the cardiorespiratory fitness of persons with lower limb amputation (LLA) during rehabilitation, and in potential factors influencing their cardiorespiratory fitness. We performed a retrospective cohort study using data from cardiopulmonary exercise tests. Included participants were adults with LLA. Main outcome was cardiorespiratory fitness expressed as O2 peak (ml/min/kg) and was directly determined using breath-by-breath gas analysis. O2 peak was compared to reference values for able-bodied controls. Multivariate regression analysis was performed to investigate potential factors related to O2 peak in persons with LLA. Potential factors were age, BMI adjusted, gender, level of amputation, aetiology of amputation, unilateral/bilateral, type of ergometry and use of beta blockers. Data of 74 participants with LLA are presented; 84% male (n = 62), mean age 58.9 (SD 11.6), mean BMI 26.7 (SD 5.6), 44 participants have a LLA above the knee, 30 below the knee. Overall O2 peak was lower in persons with LLA compared to reference values for able-bodied controls, with mean O2 peak for the total LLA group of 14.6 ± 4.1 ml/kg/min. In the multivariate regression analysis, only age was a significant predictor for lower O2 peak (regression coefficient: −0.15, 95% CI [0.23–0.069], r2 = 0.166). These results indicate that the cardiorespiratory fitness in persons with LLA is low, while they actually need more energy to walk and perform other daily activities. Cardiorespiratory fitness is not closely associated with the analysed demographic or clinical factors and will have to be determined on an individual basis for use in daily practice.

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Section: Discussionmentioning

confidence: 99%

Cardiorespiratory fitness in persons with lower limb amputation

van Schaik,

Blokland,

van Kammen

et al. 2024

International Journal of Rehabilitation Research

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An LWPR-Based Method for Intelligent Lower-Limb Prosthesis Control by Learning the Dynamic Model in Real Time

Liu

et al. 2023

Machines

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A significant number of people in the world suffer from limb losses, while prosthesis is the hopeful way to help the amputees back to normal life. Recently, the most popular control method used in intelligent prosthesis is FSM-IC (finite state machine with impedance control), which requires a significant amount of manual parameter adjustments to achieve a good model compensation in a discrete way. Taking the lower-limb prosthesis as the research object, this paper applies an LWPR (locally weighted projection regression) model to learn the dynamic model of a prosthesis in real time in order to achieve a better model compensation in a continuous way and propose scientific experimental schemes to verify the control method. First, the basic control framework of lower-limb prosthesis is given. Then, the control law is derived on the basis of model building and LWPR’s addition. Finally, the proper experimental schemes are designed to carry out the control method effectively in a safe way. The experimental results show that the control law with the LWPR model can greatly improve the tracking performance during the swing phase and obtain rather good compliance during the stance phase. Moreover, the results also indicate that the LWPR model can approximate the dynamic model online. This method is hoped to be extended to more applications and fields.

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Energy cost of walking in people after lower limb amputation: A systematic review and meta-analysis

Cited by 2 publications

References 2 publications

Cardiorespiratory fitness in persons with lower limb amputation

Cardiorespiratory fitness in persons with lower limb amputation

An LWPR-Based Method for Intelligent Lower-Limb Prosthesis Control by Learning the Dynamic Model in Real Time

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