CORRIGENDUM.

Abstract

CorrigendumCORRIGENDUMPublished Online:18 Apr 2019https://doi.org/10.1152/japplphysiol.zdg-3016-corr.2019Original articleMoreSectionsPDF (31 KB)Download PDF ToolsExport citationAdd to favoritesGet permissionsTrack citations ShareShare onFacebookTwitterLinkedInWeChat Grabowski AM, Herr HM. Leg exoskeleton reduces the metabolic cost of human hopping. J Appl Physiol 107: 670–678, 2009. First published May 7, 2009; doi:10.1152/japplphysiol.91609.2008.—In Table 2, standard deviations for kdim and dhops were incorrect. The corrected table appears below.Table 2. kdim and kinematics of hopping with and without a leg exoskeletonSessionHopping Frequency, Hzkdimtc, shvert, cmdhops, cmNormal2.01 ± 0.0116.80 ± 1.600.379 ± 0.0271.14 ± 0.614.32 ± 2.02MLE2.02 ± 0.0117.87 ± 2.760.358 ± 0.0411.78 ± 1.406.40 ± 3.35†SLE2.01 ± 0.0116.40 ± 1.48*0.383 ± 0.0241.43 ± 0.603.60 ± 2.01*Normal2.20 ± 0.0220.70 ± 1.280.340 ± 0.0230.98 ± 0.374.07 ± 2.57MLE2.21 ± 0.0220.51 ± 1.900.339 ± 0.0251.36 ± 0.675.64 ± 3.02†SLE2.21 ± 0.0220.48 ± 2.36†0.346 ± 0.0241.12 ± 0.383.85 ± 1.87*Normal2.41 ± 0.0125.58 ± 1.780.314 ± 0.0190.60 ± 0.254.68 ± 2.20MLE2.41 ± 0.0224.50 ± 1.870.321 ± 0.0150.81 ± 0.394.12 ± 2.12SLE2.42 ± 0.0124.55 ± 1.780.321 ± 0.0180.82 ± 0.413.53 ± 1.80Normal2.61 ± 0.0231.07 ± 1.870.286 ± 0.0260.57 ± 0.504.37 ± 2.38MLE2.61 ± 0.0130.33 ± 2.750.289 ± 0.0170.80 ± 0.374.23 ± 2.19SLE2.61 ± 0.0229.13 ± 2.52*0.300 ± 0.014*0.63 ± 0.272.92 ± 1.69*Values are means ± SD. Shown are hopping frequency, dimensionless stiffness (kdim), contact time (tc), hopping height (hvert), and mean distance between consecutive hops (dhops) averaged from 15 hops/subject with and without (normal) wearing a leg exoskeleton (MLE and SLE). kdim equals the ratio of peak ground reaction force (GRF) in units of body weight and peak center of mass displacement normalized by leg length.*Significant difference (P 0.05) between hopping with the MLE and SLE;†significant difference (P 0.05) between hopping with and without (normal) an exoskeleton.This article has no references to display. Download PDF Previous Back to Top Next FiguresReferencesRelatedInformation Related ArticlesLeg exoskeleton reduces the metabolic cost of human hopping 01 Sep 2009Journal of Applied Physiology More from this issue > Volume 126Issue 4April 2019Pages 1173-1173 Copyright & PermissionsCopyright © 2019 the American Physiological Societyhttps://doi.org/10.1152/japplphysiol.zdg-3016-corr.2019PubMed30998444History Published online 18 April 2019 Published in print 1 April 2019 Metrics