Age-Related Differences in OMNI-RPE Scale Validity in Youth: A Longitudinal Analysis

作者：Gammon Catherine^*; Pfeiffer Karin A; Pivarnik James M; Moore Rebecca W; Rice Kelly R; Trost Stewart G

来源：Medicine and Science in Sports and Exercise, 2016, 48(8): 1590-1594.

DOI：10.1249/MSS.0000000000000918

• PERCEIVED EXERTION
• HEART RATE
• CHILDREN
• ADOLESCENTS

RPE scales are used in exercise science research to assess perceptions of physical effort. RPE scale validity has been evaluated by assessing correlations between RPE and physiological indicators. Cross-sectional studies indicate that RPE scale validity improves with age; however, this has not been studied longitudinally. Purpose: This study aimed to examine age-related trends in OMNI-RPE scale validity, using a longitudinal study design, and HR and oxygen uptake ((V) over dotO(2)) as criterion measures. Methods: Participants performed eleven 5-min activity trials at baseline, 12-, 24-, and 36-month follow-up ((V) over dotO(2) data: N = 160; HR data: N = 138). HR and(V) over dotO(2) between minutes 2.5 and 4.5 of each activity were recorded. At the end of each activity, participants reported RPE. Children were stratified into the following age-groups: 6-8, 9-10, 11-12, and >= 13 yr. Within-subject correlations between OMNI-RPE and HR/(V) over dotO(2) were calculated at each time point. Differences between correlations for consecutive time points were evaluated using 95% confidence intervals. Results: Among children age 6-8 yr at baseline, correlations progressed from 0.67 to 0.78 ((V) over dotO(2)) and from 0.70 to 0.79 (HR) for 36 months. Among children age 9-10 yr at baseline, the mean within-subject correlation was 0.78 at baseline and 0.81 at 36-month follow-up. Among children age 11-12 and >= 13 yr at baseline, OMNI-RPE ratings demonstrated strong validity (r >= 0.82) at each time point. Conclusions: For the 36-month follow-up, OMNI-RPE scale validity improved among children age 6-8 yr at baseline and remained strong among children age 9-10, 11-12, and >= 13 yr at baseline. Moderate correlations for the youngest participants suggest that caution should be used when interpreting OMNI-RPE reports from children younger than 8 yr.

• 出版日期2016-8