BACKGROUND: Freezing of gait ( @entity6556 ) is a serious @entity426 affecting up to two-thirds of @entity1 with @entity191 ( @entity191 ). Cueing has been explored as a method of generating motor execution using visual transverse lines on the floor. However, the impact of a laser light visual cue remains unclear. OBJECTIVE: To determine the biomechanical effect of a laser cane on @entity6556 in a @entity1 with @entity191 compared to a healthy age- and gender-matched control. METHODS: The @entity1 with @entity191 and healthy control were given a task of initiating gait from standing. Electromyography (EMG) data were collected from the tibialis anterior (TA) and the medial gastrocnemius (GS) muscles using an 8-channel system. A 10-camera system (Qualisys) recorded movement in 6 degrees of freedom and a calibrated anatomical system technique was used to construct a full body model. Center of mass (COM) and center of pressure (COP) were the main outcome measures. RESULTS: The uncued condition showed that separation of COM and COP took longer and was of smaller magnitude than the cued condition. EMG activity revealed prolonged activation of GS, with little to no TA activity. The cued condition showed earlier COM and @entity551 . There was reduced fluctuation in GS, with abnormal, early bursts of TA activity. Step length improved in the cued condition compared to the uncued condition. CONCLUSION: Laserlight visual cueing improved step length beyond a non-cued condition for this @entity1 indicating improved posture and muscle control.

Laserlight visual cueing device for freezing of gait in XXXX : a case study of the biomechanics involved.

@entity1 :: ('9606', 'Species') :: ['participant', 'patient', 'people'] @entity191 :: ('MESH:D010300', 'Disease') :: ["Parkinson's disease", 'PD'] @entity426 :: ('MESH:D020233', 'Disease') :: ['gait disorder'] @entity6556 :: ('161882', 'Gene') :: ['FOG'] @entity551 :: ('MESH:D007022', 'Disease') :: ['COP separation']
@entity191 :: (MESH:D010300,Disease) :: ['Parkinson's disease']
