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) |
| Lactatemax (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 decrement1 (%) |
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 slope2 (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
