Abrantes, Catarina, Isabel Machado, and Daniel Santarém. “Heart Rate and Oxygen Saturation of Vastus Lateralis and Gastrocnemius Medialis Muscles at Maximal Exercise Intensity: A Comparison Between Treadmill, Elliptical Trainer and Cycle Ergometry”. Motricidade 20, no. S1 (December 31, 2024). Accessed October 3, 2026. https://revistas.rcaap.pt/motricidade/article/view/32139.