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Fig. 4 | BMC Biomedical Engineering

Fig. 4

From: Technical feasibility of constant-load and high-intensity interval training for cardiopulmonary conditioning using a re-engineered dynamic leg press

Fig. 4

Original data records from participant 2. Left: CLT, Right: HIIT. (a,b) Oxygen uptake \(\dot {V}\mathrm {O}_{2}\). (c,d) Heart rate HR. (e,f) Respiratory exchange ratio (RER). (g,h) Target and measured work rates (Ptarget, P). Parts (a)–(d): the green line indicates the target values, \(\dot {V}\mathrm {O}_{2\text {VT}1}\) for the CLT and \(\dot {V}\mathrm {O}_{2\text {VT}2}\) for the HIIT (Table 2); the dashed black line indicates the measured mean value, the steady state mean value for CLT, and the average of the five peak values for HIIT (Table 1). Parts (b),(d): the blue dots indicate the peak values of each interval during HIIT

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