Cardiorespiratory Fitness Normative Values in Latin-American Adolescents: Role of Fatness Parameters
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2020-05-21
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gruplac
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Abstract
The aim of this study was to provide percentile values for a cardiorespiratory fitness
(CRF) field test for Latin-American adolescents (34,461 girls and 38,044 boys) aged 13 to 15 years.
The role of fatness parameters on the CRF level across age groups was also examined, with a focus
on non-obese (healthy) and obese groups. CRF was assessed using the 20-meter shuttle run test
protocol. Anthropometric parameters were measured using body mass index z-score (body mass
index (BMI) z-score), BMI, waist circumference (WC), and waist-to-height ratio (WHtR). Participants
were categorized according to the BMI z-score, WC, and WHtR international cut-o points as healthy
and obese. Age- and sex-specific reference tables for the 3rd, 10th, 25th, 50th, 75th, 90th, and 97th
centile scores were calculated using Cole’s lambda, mu, and sigma method. The prevalence of obesity
according to the BMI z-score, WC, and WHtR was 9.6%, 11.2%, and 15.0%, respectively. Across all age
and sex groups, a negative association was found between relative peak oxygen uptake (˙V O2peak)
and BMI, WC, and WHtR. In boys and girls there were higher levels of performance across all age
groups, with most apparent gains between the ages of 13 and 14 years old. Overall, participants
categorized in the healthy group had shown to have significantly higher ˙VO2peak than their obese
counterparts (p < 0.001; Cohen’s d > 1.0). In conclusion, our study provides age- and sex-specific
reference values for CRF (˙VO2peak, mL kg1 min1). The anthropometric parameters were inversely
associated with CRF in all ages in both sexes. The obese group had worse CRF than their healthy
counterparts independent of anthropometric parameters used to determine obesity
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Atribución-NoComercial-SinDerivadas 2.5 Colombia