Pro strap

Manufactured by Polar Electro

Sourced in Finland

The Pro Strap is a wearable device designed for use with Polar Electro's line of heart rate monitoring equipment. The core function of the Pro Strap is to provide a comfortable and secure attachment point for the heart rate sensor, enabling accurate heart rate data collection during physical activities.

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Lab products found in correlation

Polar h10 heart rate monitor, by Polar Electro (1 mentions) Polar h10 hr monitor, by Polar Electro (1 mentions) Polar h10, by Polar Electro (1 mentions)

4 protocols using pro strap

Resting Heart Rate Variability Protocol

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For collection of RR intervals participants were in a supine resting position, in a temperature-controlled room set at 20 C. The room was kept dark and quiet, and participants were instructed not to verbalise throughout the measurement and breathe freely at their normal resting rate. Before the 30-min RR interval measurement commenced, an initial 20-min supine rest period was carried out to ensure participants were at complete rest and their heart rates were stable.
To collect the RR intervals participants wore a Polar H10 heart rate monitor with a Pro Strap (Polar Electro Oy, Kempele, Finland), which has been shown to provide strong agreement and comparable RR interval signal quality to conventional ECG devices (Gilgen-Ammann et al. 2019 (link); Schaffarczyk et al. 2022 (link)). The elastic electrodes of the Pro Strap were moistened, and the strap lengthened to fit around the participant’s chest circumference as described by the manufacturer. The RR intervals were acquired at 1000 Hz via the Elite HRV application (Elite HRV, Asheville, NC, USA) on a mobile device positioned directly next to the participant. The RR intervals were then exported as a text file for processing and analysis offline in MATLAB.

Fennell C.R., Mauger A.R, & Hopker J.G. (2023). Inter-day reliability of heart rate complexity and variability metrics in healthy highly active younger and older adults. European Journal of Applied Physiology, 124(5), 1409-1424.

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Monitoring Training Intensity with Heart Rate Zones

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HR zones are a useful method for monitoring training intensity [68 (link)]. These zones categorize training intensity based on a percentage of the maximum heart rate and are commonly divided into five ranges. For our study, we adhered to the Polar recommendations for each HR zone (https://www.polar.com/blog/running-heart-rate-zones-basics/): Zone 1 (50–60%), Zone 2 (60–70%), Zone 3 (70–80%), Zone 4 (80–90%), and Zone 5 (90–100%). The time spent in each HR zone was calculated as a percentage of the whole training bout time (e.g., spending 1 minute in zone 3 during the three-minute training bouts corresponds to 33.3%). Similar to the HRV, HR zones were controlled using the Polar H10 HR monitor with a Pro Strap (Polar Electro Oy, Kempele, Finland).

Ammar A., Boujelbane M.A., Simak M.L., Fraile-Fuente I., Rizzi N., Washif J.A., Zmijewski P., Jahrami H, & Schöllhorn W.I. (2023). Unveiling the acute neurophysiological responses to strength training: An exploratory study on novices performing weightlifting bouts with different motor learning models. Biology of Sport, 41(2), 249-274.

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Heart Rate Variability Measurement Validation

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Before and immediately after the different training bouts, HRV parameters were measured using a Polar H10 HR monitor with a Pro Strap (Polar Electro Oy, Kempele, Finland). The Polar H10 system measures the electrical signal of the heart in the form of a 1-channel electrocardiogram (ECG) signal using two dry electrodes. From the ECG signal, the R-peaks are detected to derive the RR interval time series. Both the ECG quality [65 ] and the quality of the derived RR intervals [66 (link), 67 (link)] using Polar H10 were previously compared to the gold standard ECG measurement using a 12-channel medical-grade ECG device and found to be excellent.

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Accurate Heart Rate Monitoring with Polar H10

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HR was obtained utilizing a Polar H10 sensor with a Pro Strap that sent data to the Polar Beat app via an iPad (Polar Electro Oy, Kempele, Finland). For each participant, HR was recorded prior to each penalty kick and then averaged to represent the overall HR for each condition. Gilgen-Ammann, Schweizer, and Wyss [21 (link)] tested the RR interval measurements of the Polar H10 sensor compared to those of the 3-lead ECG Holter monitor (Schiller Medizintechnik GmbH, Baar, Switzerland) that is referred to as the gold standard for HR data collection. RR intervals are the two consecutive R-waves in an electrocardiogram, and the signal quality of these RR intervals is what is important for measurement devices quantifying HR and HR variability [21 (link)]. Results showed that the Polar H10 was as accurate as the Holter monitor during low- and moderate-intensity activities and even had a higher RR interval signal quality than the Holter monitor during intense activities. Both systems had less than a 2% difference between each other in 97.1% of measured RR intervals and had a high correlation with each other (r = 0.997), thus, the Polar H10 monitor provides an accurate measurement of HR [21 (link)].

Harrison K., Potts E., King A.C, & Braun-Trocchio R. (2021). The Effectiveness of Virtual Reality on Anxiety and Performance in Female Soccer Players. Sports, 9(12), 167.

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