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In recent years, new portable performance monitoring devices have appeared in swimming. The study aims to establish the current validity of the  FORM Goggles ,  Finis Stopwatch , and the  Garmin Swim 2 Watch , for the partial and total times and stroke count (experiment 1;  n  = 17) and to compare the effect of the devices considered as valid in monitoring the pace of master swimmers (experiment 2;  n  = 10). The  FORM Goggles  and the  Finis Stopwatch  showed good level of agreement and accuracy ( Bland Altman plots  showed homoscedasticity and in most cases Lin’s concordance correlation coefficient were&gt;0.95, and the error magnitude&lt;0.2 seconds). These systems allow better pace control compared to  Garmin Swim 2 , with a difference between target and actual time below 1.5 %. However, the results showed that the concurrent feedback provided by  FORM Smart Swim Goggles  could offer greater advantages than the traditional feedback provided via the  Finis Stopwatch  at the end of each series, as swimmers were closer to the target time ( p  &lt; 0.05). In conclusion both the  FORM Goggles  and the  Finis Stopwatch , showed a good validity and could serve for performance monitoring in swimming, allowing the  Form Goggles  better pace control.

Assessment of feedback devices for performance monitoring in master’s swimmers