Table 2. Descriptive statistics of performance, physiological and psychological measures according to the running test and the participants’ sex. Values are means (±SD).
|
15-15 |
20-m shuttle run |
Total |
Boys |
Girls |
Total |
Boys |
Girls |
Performance measures |
Net run duration (s) |
566(156)*** |
651(179) |
500(149) |
346(156)*** |
433(163) |
243(153) |
Vpeak (km·h-1) |
13.09 (1.86)*** |
14.05 (2.16) |
12.36 (.72) |
9.86 (1.29)*** |
10.58 (1.33) |
9.00 (.50) |
Physiological measures |
HRpeak (bpm) |
190(5) |
193(4) |
187(6) |
189(6) |
190(8) |
187(4) |
VO2peak (ml·min-1·kg-1) |
34.2 (5.0) |
36.0 (3.8) |
33.5 (5.6) |
38.4 (6.1) |
41.7 (5.4) |
34.4 (4.6) |
RER |
1.12 (.02) |
1.13 (.02) |
1.11 (.02) |
1.11 (.04) |
1.10 (.05) |
1.13 (.02) |
[La-]b (mmol·l-1) |
6.8 (1.9) |
6.9 (1.5) |
7.1 (2.2) |
6.3 (1.4) |
6.1 (1.6) |
6.4 (1.3) |
Physiological measures at 9 km/h |
VO2 (ml·min-1·kg-1) |
28.3 (2.7)*** |
28.9 (1.6) |
28.2 (3.7) |
35.4 (2.7)*** |
36.3 (2.4) |
33.4 (3.1) |
HR (bpm) |
167(15) |
159(16) |
177(7) |
174(12) |
171(13) |
178(11) |
Psychological measures |
RPE |
16.0 (1.2)*** |
16.0 (1.5) |
16.0 (.7) |
12.7 (1.6)*** |
12.5 (1.8) |
13.0 (1.7) |
∆ GSW |
.2 (1.1) |
-.1 (1.1) |
.6 (1.1) |
.0 (1.1) |
-.4 (1.1) |
.6 (1.0) |
∆ PSW |
.9 (1.8) |
.6 (1.3) |
1.1 (2.3) |
-.2 (1.4) |
-.4 (1.8) |
.1 (.9) |
∆ PC |
1.4 (1.4)* |
1.3 (1.4) |
1.5 (1.5) |
.2 (1.0)* |
.2 (1.1) |
.2 (.9) |
∆ SC |
1.1 (1.9) |
1.1 (2.1) |
1.2 (2.0) |
-.2 (1.4) |
-.8 (1.2) |
.6 (1.3) |
∆ PA |
.3 (1.0) |
-.3 (.9) |
1.1 (.7) |
-.1 (.8) |
-.2 (1.0) |
.1 (.3) |
∆ PS |
.6 (1.9) |
.5 (2.4) |
.7 (1.4) |
.1 (.9) |
.5 (.6) |
-.3 (1.1) |
Significant inter-test (15-15 vs. 20-m shuttle run) differences: * p < 0.05;** p < 0.01;*** p < 0.001. SD = standard deviation. V
peak = peak running velocity; HR
peak = peak heart rate; VO
2peak = peak oxygen uptake; RER = respiratory exchange ratio; [La
-]
b = blood lactate concentration; RPE = rating of perceived exertion; GSW = global self-worth; PSW = physical self-worth; PC = physical condition; SC = sport competence; PA = physical attractiveness; PS = physical strength; ∆ = measures of the delta between post- and pre-test.