BACKGROUND AND PURPOSE: Treadmill aerobic exercise improves gait, aerobic capacity, and @entity65 after @entity64 , but a lack of specificity in current guidelines could lead to underdosing or @entity1445 of aerobic intensity. The @entity1576 ( @entity1576 ) has been recommended as an optimal, specific starting point for continuous aerobic exercise. However, @entity1576 measurement is not available in clinical @entity64 settings. Therefore, the purpose of this study was to identify an accurate method to predict @entity299 (HRVT) for use as a surrogate for @entity1576 . METHODS: A cross-sectional design was employed. Using symptom-limited graded exercise test (GXT) data from 17 subjects more than 6 months poststroke, prediction methods for HRVT were derived by traditional target HR calculations (percentage of HRpeak achieved during GXT, percentage of peak HR reserve [HRRpeak], percentage of age-predicted maximal HR, and percentage of age-predicted maximal HR reserve) and by regression analysis. The validity of the prediction methods was then tested among 8 additional subjects. RESULTS: All prediction methods were validated by the second sample, so data were pooled to calculate refined prediction equations. HRVT was accurately predicted by 80% HRpeak (R, 0.62; standard deviation of error [SDerror], 7 bpm), 62% HRRpeak (R, 0.66; SDerror, 7 bpm), and regression models that included HRpeak (R, 0.62-0.75; SDerror, 5-6 bpm). DISCUSSION AND CONCLUSIONS: Derived regression equations, 80% HRpeak and 62% HRRpeak, provide a specific target intensity for initial aerobic exercise prescription that should minimize underdosing and @entity1445 for @entity1 with @entity64 . The specificity of these methods may lead to more efficient and effective treatment for poststroke deconditioning.Video Abstract available for more insights from the authors (see Supplemental Digital Content 1, http://links.lww.com/JNPT/A114).

Predicting Heart Rate at the Ventilatory Threshold for Aerobic Exercise Prescription in XXXX With @entity64 .

@entity1 :: ('9606', 'Species') :: ['persons'] @entity64 :: ('MESH:D020521', 'Disease') :: ['stroke', 'chronic stroke'] @entity1576 :: ('MESH:D012131', 'Disease') :: ['VT', 'ventilatory threshold'] @entity299 :: ('MESH:D006331', 'Disease') :: ['heart rate at the VT'] @entity1445 :: ('MESH:D062787', 'Disease') :: ['overdosing'] @entity65 :: ('MESH:D002318', 'Disease') :: ['cardiovascular health']
@entity1 :: (9606,Species) :: ['Persons']
