2021
DOI: 10.1080/24725838.2021.2005720
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A Passive Back-Support Exoskeleton for Manual Materials Handling: Reduction of Low Back Loading and Metabolic Effort during Repetitive Lifting

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Cited by 36 publications
(28 citation statements)
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“…Further, this reduction in SCM activity may indicate that external moments from an ASE effectively lower demands on muscles in the shoulder complex, since the SCM originates at the sternoclavicular joint. These results confirm the results of Schmalz et al (2022), who predicted reduced SCM muscle forces based on computational musculoskeletal modeling when using the PX (without an add-on neck support) during a simulated construction-related overhead task. Across the current simulated work conditions (i.e., height and force direction), using an ASE reduced median TRP activity (by 10-53%; Figure 4).…”
Section: 1supporting
confidence: 87%
“…Further, this reduction in SCM activity may indicate that external moments from an ASE effectively lower demands on muscles in the shoulder complex, since the SCM originates at the sternoclavicular joint. These results confirm the results of Schmalz et al (2022), who predicted reduced SCM muscle forces based on computational musculoskeletal modeling when using the PX (without an add-on neck support) during a simulated construction-related overhead task. Across the current simulated work conditions (i.e., height and force direction), using an ASE reduced median TRP activity (by 10-53%; Figure 4).…”
Section: 1supporting
confidence: 87%
“…An intuitive assumption might be that such reduction would improve the overall work performance, especially for the active exoskeleton. This is supported by other studies indicating lower energetic costs (Baltrusch et al, 2020;Schmalz et al, 2022) and delayed muscle fatigue onset (Yin et al, 2019;Lamers et al, 2020) when using a back-support exoskeleton. However, our recent study revealed that the active CrayX exoskeleton hindered overall work performance significantly more compared to the passive Paexo Back exoskeleton (Govaerts et al, 2023b).…”
Section: Introductionsupporting
confidence: 85%
“…The WPM provides stronger support for free-squat motions, as the difference between the WPM and SPM is considerably less than for stoop motions where the SPM has a stronger relieve effect ( Figure 8 ), which can be explained by the modelled hip flexion–torque dependency. In using similar biomechanical modeling techniques, Schmalz et al [ 49 ] identified reductions of 21% for the L4/L5 peak compression force for a passive exoskeleton, which is very dependent on the modeled torque characteristic, motion technique, and handled load (in their case, a box of 10 kg). Furthermore, the statement by van der Have et al [ 34 ] that precisely executed squat technique can induce high peak loads to the lower back is not amplified by the exoskeleton support modes, as found for the free-squat motions performed in the present analysis.…”
Section: Discussionmentioning
confidence: 99%