Overall aim is to evaluate HAL for gait training early after stroke and the effect of HAL on short- and long-term functioning, disability and health compared to conventional gait training as part of an inpatient rehabilitation program early after stroke.

To compare outcome after 4 weeks of gait training with HAL vs. 4 weeks of conventional gait training as part of a regular inpatient rehabilitation program for hemiparetic patients with severely limited mobility early after stroke.

Study design: Randomized, controlled study with blinded outcome assessment.

Conventional gait training is individualized and performed according to current practice (approximately 30-60 minutes/session, 5 days a week) and may include standing, weight shifting, stepping, over ground walking with assistance and/or assistant devices as well as the use of a treadmill and body weight support. Conventional gait training is offered to both study groups.

Training with HAL is performed in 1 session per day, 4 days per week during 4 weeks. Time for each session is individualised but does not exceed 60 minutes/session (effective time). Training with HAL is performed in combination with body-weight support system and on a treadmill. The training program is performed by 2 physiotherapists, who have been trained in the HAL method.

Inclusion Criteria:

• less than 8 weeks since stroke onset; inability to walk independently due to lower extremity paresis (i.e. FAC score 0-1), able to sit on a bench with or-without supervision at least five minutes; sufficient postural control to allow upright position in standing with aids and/or manual support; ability to understand training instructions as well as written and oral study information and to express informed consent; body size compatible with the HAL suit.

Exclusion Criteria:

• contracture restricting gait movements at any lower limb joint; cardiovascular or other somatic condition incompatible with intensive gait training; and severe, contagious infections.