• BACKGROUND: A study was carried out to determine whether rating of dyspnoea by means of a visual analogue scale during a progressive exercise test is affected by the subject's awareness of the progressive nature of the protocol. (bmj.com)
  • The relation between dyspnoea, as assessed by the visual analogue scale, and ventilation, measured during high intensity or progressive exercise, was studied. (bmj.com)
  • The power functions were predictive of estimated ratios of sensation or affect produced by pairs of standard temperatures (e.g. 47 and 49 degrees C), thereby providing direct evidence for ratio scaling properties of VAS. (nih.gov)
  • The power function derived from sensory M-VAS ratings predicted temperatures chosen as twice as intense as standard temperatures of 47°C and 48°C, thereby providing evidence for ratio scale characteristics of M-VAS. (ovid.com)
  • Conventional analysis treats this 101 category rating scale as already linear. (rasch.org)
  • For sample size calculations and full-scale variance, a visual analogue scale could be a better option to determine image quality. (springer.com)
  • The aim was to determine whether a visual analogue scale (VAS) is an appropriate way for general dental practitioners and oral surgeons to rate their judgement of the indication for therapy of asymptomatic mandibular third molars. (diva-portal.org)
  • A preliminary incremental test was carried out with a work rate increasing by 10 watts every minute until the subject could no longer exercise, to determine the maximum work load (Wmax) and to anchor the upper end of the visual analogue scale. (bmj.com)
  • In various older and newer publications, the scales vary from 3 up to 5 points, in general. (springer.com)
  • In fact, insightful analysis has revealed that observations are on a much less discriminating 7 category scale, with necessarily bigger standard errors and lower separations and reliabilities. (rasch.org)
  • The current methodological study aimed to test the reliability of a modified visual analog scale for assessing GIS during exercise, in response to a variety of exertional-stress scenarios, with and without dietary intervention. (humankinetics.com)
  • Thus in the uncollapsed data, observations appear to be on a highly discriminating 153 category rating scale. (rasch.org)
  • The central measure of these scales is not the parametric mean, but the geometric mean or median. (springer.com)
  • A later study assessed the effects of 200 and 400 mg Ginseng during sustained cognitive demand-repeated cycles of Serial Threes, Serial Sevens and the Bakan Rapid Visual Information Processing (RVIP) task. (springer.com)