Table 4. Changes in lumbar rotation during the 6 time points. NB lumbar flexion is denoted by positive angles, extension by negative. Data are means (±SD, n=6).
Time interval |
A (2-7 min) |
B (14-19 min) |
C (24-29 min) |
D (32-37 min) |
E (44-49 min) |
F (54-59 min) |
Flexion at the catch (°) |
33.6 (7.0) |
33.9 (6.8) |
34.5 (6.7) |
34.5 (6.8) |
35.8 (7.0) |
34.9 (7.2) |
Extension at the finish (°) |
-13.5 (8.0) |
-18.1 (5.9) |
-18.8 (6.5) |
-18.3 (5.8) |
-18.7 (5.8) |
-20.2 (4.7) |
Maximum flexion in stroke (°) |
35.3 (7.1) |
35.8 (7.0) |
36.3 (7.0) |
36.3 (7.0) |
37.6 (7.1) |
36.8 (7.5) |
% stroke where maximum flexion occurs |
92.7 (10.2) |
93.2 (10.0) |
93.3 (10.1) |
93.3 (10.1) |
92.4 (11.0) |
93.0 (10.4) |
Maximum extension in stroke (°) |
-31.4 (6.3) |
-36.0 (5.2) |
-37.8 (6.2) |
-37.8 (5.0) |
-36.5 (5.3) |
-36.4 (5.4) |
% stroke where maximum extension occurs |
31.8 (1.7) |
32.2 (1.5) |
32.7 (1.6) |
32.8 (1.9) |
32.2 (3.1) |
32.7 (2.9) |