Table 3.

Associations with exercise capacity variables

Dependent variable	Independent variable	T1D		CON
		R2	β	R2	β
V̇O2max (mL/min/kg)	TP (msec2)	0.30 a	0.003 ± 0.001 a	0.37 a	0.003 ± 0.001 a
	LF/HF ratio (au)	0.004	0.24 ± 0.85	0.002	0.20 ± 1.48
	Age (year)	0.18 a	−0.30 ± 0.14 a	0.30 a	−0.43 ± 0.17 a
	Resting HR (bpm)	0.12	−0.29 ± 0.17	0.15	−0.43 ± 0.26
	BMI (kg/m2)	0.22 a	−0.88 ± 0.36 a	0.12	−0.82 ± 0.58
	Self‐reported exercise (h)	0.048	0.4 ± 0.4	0.042	0.4 ± 0.5
	T1D duration (year)	0.02	−0.007 ± 0.012	–	–
	HbA1c (mmol/mol)	0.0650	−0.14 ± 0.11	–	–
HR Reserve (bpm)	TP (msec2)	0.41 a	0.006 ± 0.002 a	0.36 a	0.004 ± 0.001 a
	LF/HF ratio (au)	0.009	−0.67 ± 1.50	0.002	−0.32 ± 1.84
	Age (year)	0.10	−0.38 ± 0.26	0.42 a	−0.69 ± 0.21 a
	Resting HR (bpm)	0.35 a	−0.88 ± 0.26 a	0.24 a	−0.73 ± 0.33 a
	BMI (kg/m2)	0.09	−0.99 ± 0.69	0.05	−0.71 ± 0.82
	Self‐reported exercise (h)	0.004	−0.2 ± 0.7	0.040	0.5 ± 0.7
	T1D duration (year)	0.05	−0.022 ± 0.021	–	–
	HbA1c (mmol/mol)	0.0780	−0.27 ± 0.20	–	–
Max HR (bpm)	TP (msec2)	0.40 a	0.005 ± 0.001 a	0.08	0.002 ± 0.002
	LF/HF ratio (au)	0.002	0.24 ± 1.22	0.001	−0.17 ± 1.50
	Age (year)	0.53 a	−0.74 ± 0.15 a	0.66 a	−0.76 ± 0.14 a
	Resting HR (bpm)	0.01	0.12 ± 0.26	0.04	0.27 ± 0.33
	BMI (kg/m2)	0.08	−0.77 ± 0.57	0.04	−0.54 ± 0.73
	Self‐reported exercise (h)	0.040	−0.5 ± 0.6	0.013	0.3 ± 0.6
	T1D duration (year)	0.23 a	−0.038 ± 0.015 a	–	–
	HbA1c (mmol/mol)	0.0001	−0.01 ± 0.17	–	–

Dependent variables: V̇O_2max; maximum aerobic capacity; HR reserve, heart rate reserve; Max HR, maximum heart rate. Independent variables; TP, total power; LF/HF ratio, low frequency power to high frequency power ratio; resting HR, resting heart rate; BMI, body mass index; T1D; Type 1 diabetes, and HbA_1c, glycated hemoglobin.

The β values are presented as the mean slope ± SD of the slope.

^aSignificant association (P < 0.05), which are in bolded text. TP and LF/HF ratio were derived from the baseline condition.