Evaluación del Talk Test como método para estimar la intensidad del ejercicio en niños sanos
2020
Introduction: Heart rate (HR) has traditionally been used to regulate the intensity of exercise; however, its measurement is
limited in the absence of a heart rate device. Consequently, indirect methods, such as the Talk Test (TT), have been validated in adults,
yet not in children. The objective of this study was to determine the relationship between TT and objective methods to quantify the
intensity of exercise in healthy Chilean children. Methods: Healthy children of both genders aged between 8 and 12 years old were
considered for the study. The participants performed two incremental step exercise tests separated by 7 days. The TT was incorporated
in one of the two tests randomly. The HR, effort perception (EP) and workload were measured every one minute during the test. HR,
EP and workload were compared by positive (TT + / +), equivocal (TT +/-), and negative (TT - / -) response of the TT. Additionally, the
reliability of cardiorespiratory parameters during TT was determined. A value of p <0.05 was considered significant. Results: 48
participants aged 9.7 ± 1.1 years old were selected. There was a significant difference in cardiorespiratory parameters between the TT
responses (p <.001). The percent of maximum HR in TT + / + was 72.2 ± 8.2%, in TT +/- was 87.9 ± 8.1% and in TT - / - was 92.0 ±
7.5%. The reliability of cardiorespiratory parameters during TT was fair to excellent in both genders. Conclusions: TT was associated
to cardiorespiratory parameters to regulate exercise intensity in healthy children.
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