Slip and trip training aims to teach the brain to prevent falls

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Healthy Young participants * Age group: 18-55 years. * Absence of any acute or chronic neurological, cardiopulmonary, musculoskeletal or systemic diagnosis. * No recent major surgery (\< 6 months) or hospitalization (\< 3 months) * Not on any sedative drugs. * Can understand and communicate in English Healthy older adults * Age group: 56-90 years. * Absence of any acute or chronic neurological, cardiopulmonary, musculoskeletal or systemic diagnosis. * No recent major surgery (\< 6 months) or hospitalization (\< 3 months) * Not on any sedative drugs. * Ability to walk with or without an assistive device for 10 meters * Can understand and communicate in English * Berg balance scale score \<45/56. Persons with stroke * Age group: 18-90 years. * Absence of any acute or chronic neurological diagnosis except stroke (self reported) * Onset of stroke (\> 6 months) * Absence of any cardiopulmonary, musculoskeletal or systemic diagnosis. * No recent major surgery (\< 6 months) or hospitalization (\< 3 months) * Not on any sedative drugs. * Ability to walk with or without an assistive device for 10 meters * Can understand and communicate in English Exclusion Criteria: Healthy subject: * Subjects will not proceed with the test if any of the following occurs at baseline measurement: 1) HR \> 85% of age-predicted maximal heart rate (HRmax) (HRmax = 220 - age), 2) systolic blood pressure (SBP) \> 165 mmHg and/or diastolic blood pressure (DBP) \> 110 mmHg during resting), and 3) oxygen saturation (measured by pulse oximeter) during resting \< 95%. * Body weight more than 250 lbs. Healthy Older adults: * Individuals with heel bone density with a T-score \< -2, is classified as osteoporotic and will be excluded. * Individuals with mild cognitive impairment (Mini-mental State Exam score \< 25/30) will be excluded. * Subjects will not proceed with the test if any of the following occurs at baseline measurement: 1) HR \> 85% of age-predicted maximal heart rate (HRmax) (HRmax = 220 - age), 2) systolic blood pressure (SBP) \> 165 mmHg and/or diastolic blood pressure (DBP) \> 110 mmHg during resting), and 3) oxygen saturation (measured by pulse oximeter) during resting \< 95%. * 6 minute walk test. Subjects will also be screened out if on the 6 minute walk test they complain of shortness of breath or uncontrolled pain (\> 3/10 on VAS) or pulse oxygen drops \< 92% or are unable to achieve the age-specified minimal ambulation distance. * Body weight more than 250 lbs. Persons with stroke: * Individuals with heel bone density with a T-score \< -2, is classified as osteoporotic and will be excluded. * Individuals with mild cognitive impairment (Mini-mental State Exam score \< 25/30) will be excluded. * Subjects will not proceed with the test if any of the following occurs at baseline measurement: 1) HR \> 85% of age-predicted maximal heart rate (HRmax) (HRmax = 220 - age), 2) systolic blood pressure (SBP) \> 165 mmHg and/or diastolic blood pressure (DBP) \> 110 mmHg during resting), and 3) oxygen saturation (measured by pulse oximeter) during resting \< 95%. * 6 minute walk test. Subjects will also be screened out if on the 6 minute walk test they complain of shortness of breath or uncontrolled pain (\> 3/10 on VAS) or pulse oxygen drops \< 92% or are unable to achieve the age-specified minimal ambulation distance. * Body weight more than 250 lbs.