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Effect of body mass index on hemiparetic gait . OBJECTIVE To evaluate the relationship between body mass index ( BMI ) and spatiotemporal , kinematic , and kinetic gait parameters in chronic hemiparetic stroke survivors . DESIGN Secondary analysis of data collected in a randomized controlled trial comparing two 12-week ambulation training treatments . SETTING Academic medical center . PARTICIPANTS Chronic hemiparetic stroke survivors ( N = 108 , > 3 months poststroke ) METHODS Linear regression analyses were performed of BMI , and selected pretreatment gait parameters were recorded using quantitative gait analysis . MAIN OUTCOME MEASURES Spatiotemporal , kinematic , and kinetic gait parameters . RESULTS A series of linear regression models that controlled for age , gender , stroke type ( ischemic versus hemorrhagic ) , interval poststroke , level of motor impairment ( Fugl-Meyer score ) , and walking speed found BMI to be positively associated with step width ( m ) ( β = 0.364 , P < .001 ) , positively associated with peak hip abduction angle of the nonparetic limb during stance ( deg ) ( β = 0.177 , P = .040 ) , negatively associated with ankle dorsiflexion angle at initial contact of the paretic limb ( deg ) ( β = -0.222 , P = .023 ) , and negatively associated with peak ankle power at push-off ( W/kg ) of the paretic limb ( W/kg ) ( β = -0.142 , P = .026 ) . CONCLUSIONS When walking at a similar speed , chronic hemiparetic stroke subjects with a higher BMI demonstrated greater step width , greater hip hiking of the paretic lower limb , less paretic limb dorsiflexion at initial contact , and less paretic ankle power at push-off as compared to stroke subjects with a lower BMI and similar level of motor impairment . Further studies are necessary to determine the clinical relevance of these findings with respect to rehabilitation strategies for gait dysfunction in hemiparetic patients with higher BMIs .
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Intervention_Physical
body mass index
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Intervention_Physical
body mass index ( BMI
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Intervention_Physical
ambulation training treatments
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Outcome_Physical
spatiotemporal , kinematic , and kinetic gait parameters
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Outcome_Physical
Spatiotemporal , kinematic , and kinetic gait parameters .
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Outcome_Physical
with peak hip abduction angle of the nonparetic limb
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Outcome_Physical
with ankle dorsiflexion angle
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Outcome_Physical
with peak ankle power at push-off
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Outcome_Physical
greater step width , greater hip hiking of the paretic lower limb , less paretic limb dorsiflexion at initial contact
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Outcome_Physical
less paretic ankle power at push-off
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Participant_Condition
chronic hemiparetic stroke
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Participant_Condition
Chronic hemiparetic stroke
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Participant_Sample-size
108
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Participant_Condition
poststroke
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Participant_Condition
chronic hemiparetic stroke
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Participant_Condition
BMIs