Moderate-vigorous Intermittent Physical Activity (M-VILPA) in Stroke

The Effectiveness of Moderate-vigorous Intermittent Lifestyle Physical Activity and Health Education to Increase Intense Physical Activity in Stroke Survivors: a Pragmatic Randomised Controlled Trial (MV-ILPA-stroke)

Stroke is the leading cause of disability in Spain. Additionally, it is the second leading cause of death in women and the third in both sexes. Regular physical activity (PA) helps prevent and manage stroke. It also helps with hypertension, maintains a healthy body weight, and improves mental health, quality of life, and well-being. PA plays a prominent role in inpatient care after stroke. However, stroke survivors become more sedentary when discharged from the hospital. They have muscle weakness, reduced balance, and fatigue. Consequently, PA levels of community-dwelling post-stroke individuals remain lower than their age-matched counterparts. Continued PA can help this population maintain and improve physical function, and reduce long-term functional limitations, and mortality risk.

Previous studies that performed a comparative analysis of physical activity between individuals with and without stroke have consistently reported that stroke survivors tend to spend less time in moderate to vigorous physical activity The 2021 AHA guideline recommends smaller sessions of PA, with suggestions such as 10 minutes of moderate activity, 4 times a week, or 20 minutes of vigorous activity twice a week. This contrasts the weekly physical activity recommendations in 2011 (30 minutes of moderate to vigorous, 1 to 3 times) and 2014 (40 minutes of moderate to vigorous, 3 to 4 times). We hypothesise that older stroke survivors are physically active more frequently but for smaller durations than younger stroke survivors who are physically active for longer durations but less regularly. Understanding these subtle changes will not only help to tailor physical activity interventions based on specific recommendations but also help design future recommendations.

Moderate-to-vigorous PA could be an adequate approach for stroke survivors as it requires less time to achieve the same benefits as light PA. More concretely, a new concept called moderate-to-vigorous intermittent lifestyle physical activity (MV-ILPA) has recently emerged for adults who do not habitually exercise in their leisure time. MV-ILPA refers to brief and sporadic bouts of moderate-vigorous intensity PA performed as part of the activities of daily living, such as bursts of very fast walking, sitting and standing up from a chair, or stair climbing. MV-ILPA is associated with a substantially lower risk of all-cause cardiovascular disease and cancer mortality. However, there is no evidence to directly support the potential benefits of MV-ILPA in the elderly post-stroke patients.

Inclusion Criteria:

• adults aged ≥50 in the late subacute phase post-stroke.
• who live in the community
• whose clinician confirmed a diagnosis of stroke (ischaemic/haemorrhagic)
• discharged from hospital inpatient regimen
• with independent mobility skills (Barthel Index ≥ 40 points).

Exclusion Criteria:

• other neurological diseases (e.g. Parkinson disease) or severe lower limb injuries.