Quindry J, Williamson-Reisdorph C, French J. Health and fitness benefits using a heart rate intensity-based group fitness exercise regimen. J. Hum. Sport Exerc. [Internet]. 2020 Sep. 1 [cited 2024 Apr. 25];15(3):692-705. Available from: https://www.jhse.ua.es/article/view/2020-v15-n3-health-fitness-benefits-heart-rate-intensity-based-e