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00005768-200305001-0031400005768_2003_35_s58_ueda_measurement_5miscellaneous< 18_0_5_0 >Medicine & Science in Sports & Exercise©2003The American College of Sports MedicineVolume 35(5) Supplement 1May 2003p S58AN EVALUATION OF VISUAL ANALOG SCALES FOR THE MEASUREMENT OF PERCEIVED EXERTION DURING EXERCISE[B-13D FREE COMMUNICATION/SLIDE PERCEIVED EXERTION: ANCHORING AND SCALING]Ueda, T1; Nabetani, T1; Teramoto, K11Fukuoka Prefectural University, Fukuoka, Japan; Kyushu University, Fukuoka, Japan; Aichi University of Education, Aichi, JapanVisual Analog Scales (VAS) are often used for quantifying sensory information in clinical and applied settings but more information is needed regarding their use for measuring differential perceived exertion.PURPOSETo evaluate VAS for measuring perceived exertion during pedaling (P) and running (R).METHODSAfter determination of maximal oxygen consumption (VO2 max) during P and R, twelve healthy males (27.2 ± 7.3 yrs, 171.9 ± 6.0 cm, 68.4 ± 8.7 kg) were subjected to three levels of exercise intensity (EI) in P (48.5, 63.0 and 76.7%VO2max) and R (50.6, 60.5 and 71.5%VO2max), during which several physiological variables were measured. Perceived exertion was measured using Borg's Rating of Physical Exertion (Borg's RPE) and four kinds of VAS (VAS1-VAS4). Each VAS consisted of a 20cm line with labels for the extremes at either end. The first VAS1 asked subjects to mark overall levels of perceived exertion on a line from “0%” to “100%.” VAS2 asked for an indication of the relative strength of central or local pain. VAS3 compared breathing difficulty and heart pain. Finally, VAS4 asked for a comparison of arm pain and leg pain.RESULTSVO2, heart rate (HR) and Borg's RPE in P were not significantly different from those in R. However, blood lactate concentration (BLa) showed a significant interaction of exercise modality (EM) and EI (p < 0.05). The first VAS1 indicated a significant interaction of EM and EI (p < 0.05). In VAS2 and VAS3, the main effects of EM (VAS2: p < 0.01; VAS3: p < 0.01) and EI (VAS2: p < 0.05; VAS3: p < 0.01) were significant.CONCLUSIONDespite equivalence in VO2, HR and perceived exertion measured by Borg's RPE, P and R were found to have different BLa dynamics and different levels of perceived exertion measured by VAS. At moderate levels of EI (50 to 80%VO2max), VAS appeared to be more sensitive than Borg's RPE. Thus, VAS might reflect inputs from local physiological and psychological variables and seems to be the better index for the evaluation of perceived exertion.AN EVALUATION OF VISUAL ANALOG SCALES FOR THE MEASUREMENT OF PERCEIVED EXERTION DURING EXERCISEUeda, T; Nabetani, T; Teramoto, KB-13D Free Communication/Slide Perceived Exertion: Anchoring and Scaling535