Table 1.
Subjects characteristics according to the ACTN3 R577X genotypes. Values are means (± standard deviation).
Variables
RR (n= 50)
RX (n = 66)
XX (n = 25)
P
Age (years)
21.9 (2.1)
21.8 (2.6)
22.6 (4.3)
.265
Height (m)
1.76 (.07)
1.75 (.07)
1.74 (.06)
.210
Body mass
Pre (kg)
73.1 (13.7)
71.5 (14.8)
70.4 (12.6)
.716
Post (kg)
74.0 (14.8)
72.7 (16.4)
71.0 (10.6)
.813
Body mass index
Pre (kg·cmË—
-2
)
23.5 (4.0)
23.3 (3.8)
23.3 (3.6)
.959
Post (kg·cmË—
-2
)
24.0 (4.2)
23.4 (4.1)
23.2 (2.6)
.757
Knee extensors PT
Pre (Nm)
229 (43)
223 (35)
224 (27)
.608
Post (Nm)
243 (42)
*
238 (37)
*
241 (33)
*
.739
Delta variation (%)
6.1
6.9
7.7
.926
**
Bench press 1RM
Pre (kg)
60.2 (14.6)
59.1 (12.7)
59.5 (17.5)
.909
Post (kg)
66.9 (12.9)
*
66.3 (11.7)
*
65.2 (13.1)
*
.851
Delta variation (%)
11.1
12.3
9.6
.282
**
PT= peak torque; 1RM= one repetition maximum
*p < 0.05 between pre and post-training
**time by genotype interaction