Neurology Medical News about hemiparetic leg poststroke;single limb exercise;femoral artery remodeling;blood flow

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Single limb exercise induces femoral artery remodeling and improves blood flow in the hemiparetic leg poststroke
Stroke, 06/15/09

Billinger SA et al. – Data suggest that a 4-week single limb exercise (SLE) training program that increases muscular activity in the hemiparetic limb improves femoral artery blood flow, diameter, and peak velocity. SLE may be an important training strategy in stroke rehabilitation to minimize poststroke vascular changes due to decreased activity of the hemiparetic limb.

Methods

Study of the effect of SLE on femoral artery blood flow, diameter, and peak flow velocity in the hemiparetic leg after stroke
Subjects: 12 pts (age 60.6±14.5 yrs; 5 male) with chronic stroke (69.1±82.2 mo; 5 with right-sided hemiparesis)
Intervention: SLE knee extension/flexion protocol 3 times/wk for 4 wks
Doppler ultrasound to assess bilateral femoral artery blood flow, diameter, and peak flow velocity at baseline and 2 and 4 wks after SLE

Results

Using repeat-measures analysis of variance, femoral artery blood flow, arterial diameter, and blood flow velocity in the hemiparetic limb significantly improved after SLE
No significant changes in nontrained limb for any outcome measures

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