Table 3.

The results of ANOVA analyses (only p-values lower than 0.1 were provided; otherwise, they are labeled as “Ns”.) and statistics of the sum of adjusted $R^2$ calculated for the optimum case and the time interval from found “inflection point” to the end of stress test. “*” means p-values between $0.05$ and $0.01$; “**” means p-values between $0.01$ and $0.001$.

Approach to Estimate the Transition Point	ANOVA p-Value for Sex Factor	ANOVA p-Value for Physical Capacity Factor	ANOVA p-Value for Initial HR Factor	Mean ± SD Sum of Adjusted ${\mathit{R}}^2$ for the Optimum Case (Max. 2)	Mean ± SD Time from IP to the End of Stress Test [minutes]
IP1	Ns.	0.001 **	Ns.	1.56 ± 0.21	5.82 ± 3.43
IP2	Ns.	Ns.	Ns.	1.07 ± 0.38	6.17 ± 3.96
IP3	0.002 **	Ns.	Ns.	1.33 ± 0.32	4.92 ± 3.63
IP4	0.006 **	0.005 **	Ns.	—	5.63 ± 2.22
IP5	0.07	0.026 *	Ns.	As for IP1
IP6	Ns.	Ns.	Ns.	As for IP2
IP7	0.07	Ns.	Ns.	As for IP3
IP8	Ns.	Ns.	Ns.	—	As for IP4