Walking pattern efficiency during collective load transport

Fumery, Guillaume; Claverie, Laetitia; Fourcassié, Vincent

doi:10.1016/j.gaitpost.2018.06.114

Cited by 7 publications

(17 citation statements)

References 14 publications

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“…When P1 or P2 were walking with the control, the RR of their pair remained at the same level as when they were walking alone. These values are comparable with those reported by Fumery et al ( 1 ) (i.e. RR ± CI 0.95 = 60.25 ± 7.59%).…”

Section: Discussionsupporting

confidence: 92%

“…In a previous study (1) we showed that the gait of the system formed by a pair of healthy individuals walking together while transporting a box was as economical as that of healthy individuals walking alone. The current study tested the hypothesis that this is also true for pairs of patients with an intellectual disability.…”

Section: Lay Abstractmentioning

confidence: 94%

“…The amplitude ( A = Z max -Z min , where Z is the height of the CoM in m) and the speed (m.s −1 ) of the CoM were also assessed. Fumery et al ( 1 ) have shown that the RR of a pair of individuals performing a collective transport task is comparable to the RR of single individuals. We thus compared the RR of single individuals with that of the pairs they formed when walking together.…”

Section: Methodsmentioning

confidence: 99%

“…The main objective of this study was to propose a relevant exercise for this assessment. Based on a protocol used to investigate the collaboration between 2 healthy individuals ( 1 ), an exercise was conceived that aimed to enable 2 patients with intellectual disability to work together.…”

mentioning

confidence: 99%

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Analysis of gait during independent and paired walking in adults with an intellectual disability: A case report.

Fumery

Fourcassié

Bourg³

2018

J Rehabil Med-CC

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Objective: Gait rehabilitation is a major concern for adults with an intellectual disability or a neuropsychological disorder. This study evaluated a collective task exercise that could complement an individual rehabilitation routine in such individuals. The movements of 3 individuals (2 patients and 1 healthy individual) were measured while walking alone and in pairs. The recovery rate, amplitude and speed of centre of mass of individuals walking alone were measured and compared with the values of the centre of mass of the system formed by pairs of individuals. Results: When individuals were walking alone, all parameter values were lower in the 2 patients than in the healthy individual. When the patients were walking in pairs, their recovery rate decreased, but their speed increased when each of them was paired with a healthy individual. In pairs, the recovery rate and the amplitude of the centre of mass remained the same as when walking alone. Conclusion: Gait rehabilitation does not appear to improve when intellectually disabled patients walk in pairs compared with when they walk alone. However, walking with a healthy individual seems to be more efficient.

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Section: Discussionsupporting

confidence: 92%

Section: Lay Abstractmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Analysis of gait during independent and paired walking in adults with an intellectual disability: A case report.

Fumery

Fourcassié

Bourg³

2018

J Rehabil Med-CC

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“…However, it is essential to conceive aids, exoskeletons and collaborative robots dedicated to assisting humans in such a task. Fumery et al, (2018) studied the energetic exchanges during a collective load carriage to investigate whether two individuals transporting an object behave economically. The authors showed that the external energetic exchanges occurring during this type of transport was as efficient as those occurring in single gait when the load is below 10% of the total body mass of the dyad.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical effects of the addition of a precision constraint on a collective load carriage task

Sghaier

Fumery

Fourcassie

et al. 2021

Preprint

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1AbstractTeam lifting is a complex and collective motor task that possesses both motor and cognitive components. The purpose of this study was to investigate to what extent the biomechanics of a collective load carriage is affected when a dyad of individuals is performing a carrying task with an additional accuracy constraint. Ten dyads performed a first condition in which they collectively transported a load (CC), and a second one in which they transported the same load while maintaining a ball in a target position on its top (PC).The recovery-rate, amplitude, and period of the center-of-mass (COM) trajectory were computed for the whole system (dyad + table = PACS). We analyzed the forces and moments exerted at each joint of the upper limbs of the subjects. We observed a decrease in the overall performance of the dyads when the Precision task was added, i.e., i) the velocity and amplitude of CoMPACS decreased by 1,7% and 5,8%, respectively, ii) inter-subject variability of the Moment-Cost-Function decreased by 95% and recovery rate decreased by 19,2% during PC. A kinetic synergy analysis showed that the subjects reorganized their coordination in the PC.Our results demonstrate that adding a precision task affects the economy of collective load carriage. Notwithstanding, the joint moments at the upper-limbs are better balanced and co-vary more across the paired subjects during the precision task. Our study results may find applications in domains such as Ergonomics, Robotics-developments, and Rehabilitation.

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