2009
DOI: 10.1242/jeb.023267
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Abstract: SUMMARYMuscle mechanical work is an important biomechanical quantity in human movement analyses and has been estimated using different quantities including external, internal and joint work. The goal of this study was to investigate the relationships between these traditionally used estimates of mechanical work in human walking and to assess whether they can be used as accurate estimates of musculotendon and/or muscle fiber work. A muscle-actuated forward dynamics walking simulation was generated to quantify e… Show more

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Cited by 79 publications
(73 citation statements)
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“…ligament and joint capsule) spanning the joint as well as the contact forces at the joint (Farley and Ferris, 1998). Consequently, the work and power derived from the lower-limb resultant joint moments may not necessarily reflect the work and power of individual muscles, as has been previously demonstrated for human walking (Sasaki et al, 2009). Second, analyses were based upon a single trial per locomotion condition for each participant.…”
Section: Limitationsmentioning
confidence: 99%
“…ligament and joint capsule) spanning the joint as well as the contact forces at the joint (Farley and Ferris, 1998). Consequently, the work and power derived from the lower-limb resultant joint moments may not necessarily reflect the work and power of individual muscles, as has been previously demonstrated for human walking (Sasaki et al, 2009). Second, analyses were based upon a single trial per locomotion condition for each participant.…”
Section: Limitationsmentioning
confidence: 99%
“…As has been outlined previously (Sasaki et al, 2009), inverse dynamic analyses do not necessarily reflect the mechanics of individual muscles. We have not taken into account co-contraction between antagonist muscles, force sharing between synergist muscles or the distribution of work and power between muscle fibres and tendon.…”
Section: Limitationsmentioning
confidence: 99%
“…However, according to previous EMG studies in swimming (Caty et al, 2007;Lauer et al, 2013), we can expect muscle co-contraction to momentarily occur at the wrist and elbow. As a result, wrist and elbow joint work calculated here might slightly underestimate the actual musculotendon work (by ∼7-14%, on the basis of calculations during walking; Sasaki et al, 2009); this would not alter our main conclusions. Neglecting the third mechanism has been shown, in fact, to yield more accurate muscle work estimates during pedaling (Neptune and van den Bogert, 1997) and walking (Sasaki et al, 2009).…”
Section: Limitations and Future Researchmentioning
confidence: 56%
“…As a result, wrist and elbow joint work calculated here might slightly underestimate the actual musculotendon work (by ∼7-14%, on the basis of calculations during walking; Sasaki et al, 2009); this would not alter our main conclusions. Neglecting the third mechanism has been shown, in fact, to yield more accurate muscle work estimates during pedaling (Neptune and van den Bogert, 1997) and walking (Sasaki et al, 2009). The extent to which this holds true in aquatic movements further warrants the use of muscle-actuated forwards dynamics simulations.…”
Section: Limitations and Future Researchmentioning
confidence: 56%
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