1. Are age-predicted equations valid in predicting maximum heart rate in individuals after stroke?
- Author
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dos Reis, Maria Teresa Ferreira, Aguiar, Larissa Tavares, Peniche, Paula da Cruz, and Faria, Christina Danielli Coelho de Morais
- Subjects
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CROSS-sectional method , *RISK assessment , *PATIENT safety , *CORONARY disease , *EXERCISE , *RESEARCH funding , *RESEARCH methodology evaluation , *AGE distribution , *ORTHOPEDIC apparatus , *DESCRIPTIVE statistics , *HEART beat , *CARDIOPULMONARY system , *STROKE rehabilitation , *RESEARCH methodology , *AEROBIC exercises , *SOCIAL networks , *NEUROPSYCHOLOGICAL tests , *RESPIRATORY measurements , *INTRACLASS correlation , *STROKE patients , *EXERCISE tests , *STROKE , *WALKING speed , *COMPARATIVE studies , *CONFIDENCE intervals , *DATA analysis software , *PSYCHOSOCIAL factors , *PREDICTIVE validity , *PEOPLE with disabilities , *DISEASE risk factors , *DISEASE complications - Abstract
To investigate the validity of six age-predicted maximum heart rate (HRmax) equations after stroke. Sixty individuals (54 (12) years; 64 (69) months after stroke) were included. A Cardiopulmonary Exercise Test (CPET) performed on a treadmill obtained the HRmax. The most used age-predicted equations were investigated: (1) 220-age, proposed by Fox; (2) 206.9– (0.67 × age), proposed by Gellish; (3) 208– (0.7 × age), proposed by Tanaka; (4) 216.6– (0.84 × age), proposed by Astrand; (5) 164– (0.72 × age) and (6) 200– (0.92 × age) proposed by Brawner. No statistically significant agreement was found between the HRmax obtained by the CPET and the one predicted by the equations 1–5 (–0.18 ≤ 95% confidence interval ≤0.79). A significant and moderate agreement was found between the HRmax obtained by the CPET and the one predicted by equation (6) (95% CI= 0.05–0.75; Intraclass Correlation Coefficient= 0.51). Bland-Altman plots showed that equations (1–4) and (6) overestimated the HRmax. Equation (6) presented the lower mean difference. The equations developed for non-disabled individuals (1–4) are not adequate to be used in individuals after a stroke. Equation (6) (Brawner) showed the best results to be used in individuals after stroke; however, it should be used cautiously. Prediction equations for maximum heart rate (HRmax) are commonly used to prescribe aerobic exercise for individuals following a stroke. The equations developed for non-disabled individuals are not valid for use with individuals after stroke, leading to an overestimation of the HRmax. An age-predicted HRmax equation developed for individuals with coronary heart disease may provide outcomes that are more accurate for stroke survivors, but care should still be taken when using it. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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