The Moofit HW401 armband showed a strong correlation (r=0.95, p<0.0001) between reserve heart rate and Wint index during HIIT in university students aged 19-25.
Cross-Sectional (n=213)
No
Does a low-cost ANT+ armband accurately measure and correlate reserve heart rate, perceived exertion, and Wint index during HIIT in university students?
A low-cost ANT+ armband demonstrated strong correlation between reserve heart rate and Wint index during HIIT, suggesting utility for group monitoring in educational settings.
Effect estimate: Pearson correlation r=0.95 between HRr and Wint index during HIIT; r=0.235 between HRr and RPE during HIIT
Absolute Event Rate: 83.66% vs 82.31%
p-value: p=<0.0001 for HRr-Wint index, 0.001 for HRr-RPE
High-intensity interval training (HIIT) provides substantial cardiovascular benefits; however, precise monitoring typically requires expensive devices. These systems are feasible in research laboratories but are costly for schools and the fitness industry. Low-cost, validated devices are required to facilitate broader implementation. A cross-sectional study was conducted with 213 students (173 men and 40 women) from the Catholic University of Valencia, Spain. The participants completed an HIIT protocol consisting of five 3 min blocks. Heart rate (HR) was recorded using a Moofit HW401 armband (ANT+ technology). Ratings of perceived exertion (RPE, Omni-Res scale) and the Wint index were also obtained. Pearson correlations were computed between reserve heart rate (HRr), RPE, and Wint index during the warm-up phases (T1, T2) and HIIT, stratified by sex, age, and body mass index (BMI). HRr was strongly correlated with the Wint index (r = 0.95, p 0.05). Correlations were weaker in participants with extreme BMI values (n < 10, obese). The Moofit HW401 armband showed consistent agreement between HRr, RPE, and Wint index during HIIT, supporting its practical use for group monitoring in educational settings, pending formal validation against gold standards.
Martín-Ruiz et al. (Thu,) conducted a cross-sectional in University students aged 19-25 engaged in physical exercise at least 4 days a week without recent injury (n=213). High-intensity interval training (HIIT) protocol (five 3-min blocks with 90 s rest) using Moofit HW401 ANT+ armband for heart rate monitoring was evaluated on Correlation/agreement between reserve heart rate (HRr) measured by Moofit HW401, ratings of perceived exertion (RPE), and Wint index during HIIT (Pearson correlation r=0.95 between HRr and Wint index during HIIT; r=0.235 between HRr and RPE during HIIT, p=<0.0001 for HRr-Wint index, 0.001 for HRr-RPE). The Moofit HW401 armband showed a strong correlation (r=0.95, p<0.0001) between reserve heart rate and Wint index during HIIT in university students aged 19-25.