. 2020 May 14;15(5):e0233134. doi: 10.1371/journal.pone.0233134

Table 1. Baseline characteristics of each training group.

Data are mean ± SD.

	RT-only (n = 9)	HIIT+RT (n = 10)	RT+HIIT (n = 10)
Lower-Body Maximal Strength
Leg press 1-RM (kg)	344 ± 100	329 ± 94	327 ± 90
Relative 1-RM (kg^.kg_BM^-1)	4.5 ± 0.9	4.4 ± 0.9	4.4 ± 0.9
Countermovement Jump Performance
Peak Displacement (cm)	36 ± 7.0	35 ± 4.2	36 ± 5.9
Peak Velocity (m^.s^-1)	2.72 ± 0.24	2.71 ± 0.15	2.75 ± 0.20
Peak Force (N)	959 ± 227 ^□^△	1037 ± 256	1014 ± 174
Relative Peak Force (N^.kg_BM^-1)	13 ± 2.4 ^□^△	14 ± 2.0	14 ± 2.7
Peak Power (W)	3814 ± 689	3783 ± 720	3786 ± 712
Relative Peak Power (W^.kg_BM^-1)	51 ± 9.5	51 ± 4.8	51 ± 7.9
Body Composition
Total Lean Mass [LM] (kg)	54 ± 6.7	53 ± 8.1 ^○^△	54 ± 8.1
Upper body LM (kg)	35 ± 4.0	33 ± 5.2 ^○^△	35 ± 4.8
Lower body LM (kg)	19 ± 2.9	20 ± 3.1	20 ± 3.4
Fat Mass (kg)	14 ± 5.9	15 ± 6.8 ^△	13 ± 5.9
Aerobic Fitness
Absolute ${\dot{V} O}_{2 peak}$ (L^.min^-1)	3.33 ± 0.76	3.36 ± 0.62	3.24 ± 0.54
Relative ${\dot{V} O}_{2 peak}$ (mL^.kg^.min^-1)	44 ± 8.1	45 ± 7.2	44 ± 5.9
Lactate Threshold [ ${\dot{W}}_{LT}$ ] (W)	157 ± 45	162 ± 38 ^△	153 ± 31
Peak Aerobic Power [ ${\dot{W}}_{peak}$ ] (W)	215 ± 54	217 ± 46 ^△	205 ± 41
Habitual Dietary Intake
Energy (kcal^.kg^BM.d^-1)	33 ± 8 ^□^△	36 ± 11	36 ± 9
Carbohydrate (g^.kg^BM.d^-1)	3.2 ± 1.3 ^□^△	4.0 ± 1.9	3.6 ± 1.0
Protein (g^.kg^BM.d^-1)	2.0 ± 0.7 ^□^△	1.9 ± 0.6 ^△	2.1 ± 0.6
Fat (g^.kg^BM.d^-1)	1.2 ± 0.4 ^□^△	1.5 ± 0.4 ^△	1.4 ± 0.4

○small difference vs RT;

^□ small difference vs HIIT+RT;

^△ small difference vs RT+HIIT. (i.e., standardised effect size, ES = 0.20–0.60). Differences at baseline were accounted for in the subsequent statistical analyses. kg_BM^-1, per kilogram of body mass