Playing a racquet sport called pickleball is increasing in popularity every day in the United States. Garmin is a popular brand that manufactures wearable fitness trackers capable of measuring heart rate (HR). Because HR is a common way to determe exercise intensity, the validity and reliability of wearables to provide accurate HR during pickleball is important. PURPOSE: This study aimed to analyze and assess the validity and reliability of HR from the Garmin Instinct vs. Polar H10 (criterion) during pickleball. METHODS: Eleven adults (2 female, 8 male, 1 prefer not to disclose; age = 28.1 ± 9.2 years; height = 176.0 ± 8.0 cm; mass = 73.2 ± 13.4 kg) were recruited to participate via convenience sampling. Participants were asked to play alternating intervals of five minutes of pickleball interspersed with five minutes of rest while wearing two Garmin Instinct watches on the same wrist and a Polar H10 chest strap. Outcome measures were average and maximum HR, recorded in beats per minute (bpm). Mean Absolute Percent Error (MAPE) and Lin’s Concordance Correlation Coefficient (CCC) were used to assess validity; MAPE ≤ 5% and CCC ≥ 0.90. Coefficient of Variation (CV) were used to assess reliability; CV ≤ 10% and ICC ≥ 0.70. RESULTS: The Garmin Instinct did not meet the CCC threshold for validity of average or maximum HR but met the thresholds for both reliability tests for average and maximum HR (see Table 1). CONCLUSION: These results indicate that, in the present study, the Garmin Instinct was only reliable for measuring average and maximum HR. This is challenging for those who wish to track their HR while playing racquet sports such as pickleball because the Garmin Instinct did not provide accurate average or maximum HR.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.