Abstract
Abstract Objective: the present study aimed to construct, validate and verify the reliability of a protocol for assessing the cardiorespiratory capacity of older adults attending the Rio ao Ar Livre (Open Air Rio, or RAL) project entitled the “Outdoor Circuit Test” (OCT). Method: validity and reliability tests were carried out to assess the accuracy of the OCT, with 50 older adults (70.6 ± 6.3 years) of both sexes who regularly attended the RAL. Validity was tested by collecting VO2max data under maximal cardiopulmonary exercise test conditions, and the OCT variables: a) Circuit Execution Time; b) Heart Rate; c) Subjective Perception of Exertion; d) Average Heart Rate (HRméd). Reliability was tested through the reproducibility of the measurements of the OCT variables, expressed by the Intraclass Correlation Coefficient (ICC). The predictive capacity of VO2max was given by multiple linear regression and the final stability of the model by the analysis of the residues and the calculation of Cook’s distances, with a value of P≤ 0.05 adopted for statistical significance. Results: the predictive model based on age, sex, waist circumference, BMI and circuit execution time explained 41% of VO2max variance, with a standard error of estimate of 18.5%. Conclusion: the OCT exhibited satisfactory reproducibility (0.62 to 0.93), and proved to be valid, reliable, and specific for predicting the cardiorespiratory fitness of older adults attending RAL, demonstrating adequate reproducibility and a positive association with the physical fitness of older adults.
Highlights
METHODSThe human aging process involves physiologicalThe present study adopted a cross-sectional changes that cause a decline in physical capacities, approach, as it evaluates an instantaneous section which can result in a reduction in the overall of a population by means of sampling[11], in which functionality of older adults[1,2]
The sample consisted of all 50 older people encouraging regular physical exercise among (70.6±6.3 years) who attended the RAL center of older adults through the construction of public the Universidade Federal do Estado do Rio de Janeiro gymnasium spaces with equipment operated by the (UERJ), of user’s own weight and strength[6]
The HRmax, HRmean and HR30s achieved during the circuit were 86±12%, Beta coefficients demonstrated that the relative contribution of each variable ranged between 7% and 56% (Table 3)
Summary
METHODSThe human aging process involves physiologicalThe present study adopted a cross-sectional changes that cause a decline in physical capacities, approach, as it evaluates an instantaneous section which can result in a reduction in the overall of a population by means of sampling[11], in which functionality of older adults[1,2]. To ensure active and the accuracy of the Outdoor Circuit Test (OCT) was healthy population aging, public policies aimed at the determined by evaluating its validity and reliability. The sample consisted of all 50 older people encouraging regular physical exercise among (70.6±6.3 years) who attended the RAL center of older adults through the construction of public the Universidade Federal do Estado do Rio de Janeiro gymnasium spaces with equipment operated by the (the State University of Rio de Janeiro) (UERJ), of user’s own weight and strength[6]. It lacks an instrument for assessing physical fitness suitable for the specific characteristics of the circuit and its equipment[7].
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