Table 1.
YYIR and RSA performance parameters before and after the training period.
Hypoxia group
Normoxia group
all
ANOVA (main effect)
ANOVA (interaction)
pre
post
pre
post
pre
post
training
training x group
YYIR test
Running distance (m)
1430±458
1710±183
1832±310
2216±395
1653±414
1991±402
.045
.715
(n = 4)
(n = 4)
(n = 5)
(n = 5)
(ES .46)
(ES .02)
Lactate
max
(mmol·L
-1
)
9.2±3.2
6.6±1.5
11.5±1.7
7.6±1.0
10.4±2.7
7.1±1.3
.002
.113
(n = 4)
(n = 4)
(n = 5)
(n = 5)
(ES .75)
(ES .14)
RSA test
Fastest sprint (s)
7.1±.3
7.1±.3
7.2±.3
7.2±.1
7.1±.3
7.1±.2
.852
.876
(n = 5)
(n = 5)
(n = 5)
(n = 5)
(ES 0.01)
(ES .01)
Sum of sprints (s)
44.6±1.6
44.0±1.3
45.4±1.6
45.4±1.0
45.0±1.6
44.7±1.3
.279
.347
(n = 5)
(n = 5)
(n = 5)
(n = 5)
(ES 0.14)
(ES .11)
Mean time (s)
7.4±.3
7.3±.2
7.6±.3
7.6±.2
7.5±0.3
7.4±.2
.279
.347
(n = 5)
(n = 5)
(n = 5)
(n = 5)
(ES 0.14)
(ES .11)
Performance decrement
1
(%)
5.2±1.4
3.7±2.0
5.1±1.5
4.6±1.5
5.1±1.4
4.2±1.7
.212
.498
(n = 5)
(n = 5)
(n = 5)
(n = 5)
(ES .19)
(ES .06)
Fatigue slope
2
(slope)
.13±.02
.08±.04
.11±.02
.12±.03
.12±.02
.10±.04
.077
.024
(n = 5)
(n = 5)
(n = 5)
(n = 5)
(ES .34)
(ES .49)
YYIR, Yo-Yo intermittent recovery; RSA, repeated-sprint ability, Effect size, ES (partial η
2
)
1
calculated according to Rampinini et al. (2007): %decrement = ([RSAmean]/[RSAbest] × 100) – 100
2
slope of the linear regression equation calculated over the 6 repetitions