Comparing indoor tracking of golf ball and club metrics: Consistency and absolute agreement of the Flightscope Mevo+ and Trackman 4 launch monitors

This study aimed to compare the Flightscope Mevo ​+ ​launch monitor against a previously validated system (Trackman 4) during full golf swings in an indoor setting. Mevo+ and Trackman 4 were compared concurrently for driver (n ​= ​118, 118, 174 shots, respectively). Intraclass correlation coefficients (ICC) reported consistency and absolute agreement. Bland–Altman plots reported limits of agreement. Moderate to excellent consistency was reported for all values for driver (ICC ​= ​0.66–0.996), 7-iron (ICC ​= ​0.50–0.996) and pitching wedge (ICC ​= ​0.55–1.00) except angle of attack which was poor for both 7-iron and pitching wedge (ICC ​= ​0.06 & 0.03, respectively). For absolute agreement, Mevo ​+ ​demonstrated moderate to excellent levels for most driver (ICC range ​= ​0.58–0.98), 7-iron (ICC range ​= ​0.83–0.94) and pitching wedge (ICC range ​= ​0.77–0.999) variables. Driver swing plane (ICC absolute ​= ​0.24), 7-iron angle of attack, clubhead speed, dynamic loft and spin rate (ICC absolute ​= ​0.02, 0.44, 0.23, 0.49, 0.42, respectively) and pitching wedge angle of attack, dynamic loft, and swing plane (ICC absolute ​= ​0.01, 0.25, 0.43, respectively) had poor agreement. Mevo+ is consistent with Trackman 4 for all variables except angle of attack. It does however provide different absolute values, but usually in a consistent, systematic manner, across a number of variables. Coaches, club fitters, golfers, and scientists should be aware of these systematic differences when attempting to compare performance across launch monitors or when solely using the Mevo ​+ ​system to aid performance, club building and fitting, or for research purposes.