Table 2. Power, performance and metabolic variables (mean ± SEM) for the Cadet group and the Elite group during the initial acceleration phase using the non-circular (Q-ring) and circular chainrings.
|
Elite group, n = 8 |
Cadet group, n = 8 |
|
Q-ring |
Circular |
Q vs Circular |
Q-ring |
Circular |
Q vs Circular |
|
M (SEM) |
%CV |
M (SEM) |
%CV |
%Dif |
D |
M (SEM) |
%CV |
M (SEM) |
%CV |
%Dif |
D |
| Power Variables |
| PP (W) |
1706 (54) |
3.00 |
1757 (77) |
3.00 |
-2.90 |
.06 |
1272 (65) |
5.00 |
1408 (53) # |
4.00 |
-9.66 |
-.25 |
| MP (W) |
455 (29) |
6.00 |
524 (40) |
6.00 |
-13.17 |
-.10 |
295 (28) |
9.00 |
347 (25) |
7.00 |
-14.99 |
-.04 |
| TPP (s) |
1.53 (.04) |
2.00 |
1.49 (.06) |
2.00 |
2.68 |
.07 |
1.50 (.05) |
3.00 |
1.48 (.05) |
3.00 |
1.35 |
-.06 |
| PP / TPP (W s-1) |
1157 (54) |
5.00 |
1294 (86) |
5.00 |
-10.58 |
-.06 |
854 (58) |
7.00 |
954 (68) |
7.00 |
-10.52 |
-.12 |
| Performance Variables |
| TD (m) |
23.42 (.07) * |
.20 |
23.16 (.09) |
.40 |
1.12 |
.23 |
21.61 (.27) |
1.00 |
21.57 (.24) |
1.00 |
.19 |
-.02 |
| ‡ MP / TD (W m-1) |
19.36 (1.23) |
6.00 |
22.63 (1.73) |
8.00 |
-14.45 |
-.13 |
13.44 (1.20) |
9.00 |
16.1 (1.15) |
7.00 |
-16.52 |
-.22 |
| Metabolic Variables |
| BLa (mMol) |
3.79 (.24) |
6.00 |
4.22 (.32) |
8.00 |
-10.19 |
-.14 |
3.68 (.31) |
8.00 |
3.51 (.36) |
10.00 |
4.84 |
.11 |
| Lactate increase (%) |
40.5 (10.6) |
26.00 |
44.6 (9.2) |
20.00 |
-9.36 |
-.15 |
46.8 (7.4) |
16.00 |
40.8 (7.5) |
18.00 |
14.87 |
.15 |
| Max HR (beats·min-1) |
157 (1) |
1.00 |
158 (1) |
1.00 |
-.63 |
-.10 |
160 (2) |
1.00 |
158 (2) |
1.00 |
1.27 |
-.04 |
PP: Peak power. MP: Mean power. TPP: Time to peak power. TD: Total distance. Max HR: Maximum heart rate. M (SEM): Mean (±Standard Error Mean). (D) Cliff’s Delta effect size; low (.20), moderate (.30) and large (.50). % Dif Percentage difference of the average value between Q-ring and Circular respect to Circular chainring. % CV Coefficient of variation.‡ Efficiency index*Significant difference between Q-ring and Circular chainrings for Q-ring (p < 0.05)# Significant difference between Q-ring and Circular chainrings for Circular (p < 0.05)
