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Short-Latency Stretch Reflexes Do Not Contribute to Premature Calf Muscle Activity During the Stance Phase of Gait in Spastic Patients  Mark de Niet,

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Presentation on theme: "Short-Latency Stretch Reflexes Do Not Contribute to Premature Calf Muscle Activity During the Stance Phase of Gait in Spastic Patients  Mark de Niet,"— Presentation transcript:

1 Short-Latency Stretch Reflexes Do Not Contribute to Premature Calf Muscle Activity During the Stance Phase of Gait in Spastic Patients  Mark de Niet, MSc, Hilde Latour, MSc, Henk Hendricks, PhD, MD, Alexander C. Geurts, PhD, MD, Vivian Weerdesteyn, PhD  Archives of Physical Medicine and Rehabilitation  Volume 92, Issue 11, Pages (November 2011) DOI: /j.apmr Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

2 Fig 1 Ensembled average (solid line) with SD (dark shaded area) of the gastrocnemius activity and gastrocnemius lengthening velocity (dashed line) over the gait cycle for the 4 groups. Arrows denote moment of toe-off; light gray area represents first half of the stance phase. Depicted in panels: (A) paretic leg of subjects with stroke; (B) nonparetic leg of subjects with stroke; (C) most spastic leg of patients with HSP; (D) sound leg of control subjects. Abbreviation: EMG, electromyogram. Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr ) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

3 Fig 2 Individual traces of the gastrocnemius activity (solid line) and gastrocnemius lengthening velocity (dashed line) over a gait cycle for each group. Arrows denote moment of toe-off; light gray area represents first half of the stance phase. Depicted in panels: (A) paretic leg of subjects with stroke; (B) nonparetic leg of subjects with stroke; (C) most spastic leg of patients with HSP; (D) sound leg of control subjects. The phase shift corresponding to the panels were (A) −13ms, (B) 145ms, (C) 91ms, and (D) 18ms. Abbreviation: EMG, electromyogram. Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr ) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

4 Fig 3 Individual phase shifts (x) and the average phase shift (■) per subject. Positive values denote that muscle activity follows MLV pattern. Depicted in panels: (A) paretic leg of subjects with stroke; (B) nonparetic leg of subjects with stroke; (C) most spastic leg of patients with HSP; (D) sound leg of control subjects. Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr ) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions


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