Table 6. Magnitude Based Inferences on Pearson Correlation Measures between Changes in Jump Performance and Muscle Architecture
Group
Comparison |
r |
p-
Value |
Percent |
Inference |
| Positive |
Trivial |
Negative |
| Vertical Jump Height: BL – 8P |
| RFCSA |
-.06 |
.721 |
4.9 |
77.8 |
17.3 |
Likely trivial |
| RFPANG |
-.17 |
.277 |
.9 |
57.6 |
41.5 |
Possibly trivial |
| VLCSA |
-.30 |
.048 |
.1 |
24.7 |
75.3 |
Likely Negative |
| VLPANG |
-.24 |
.118 |
.2 |
39.4 |
60.4 |
Possibly Negative |
| Vertical Jump Height: BL – 20P |
| RFCSA |
-.19 |
.221 |
.6 |
52.6 |
46.8 |
Possibly trivial |
| RFPANG |
-.18 |
.252 |
.7 |
55.6 |
43.7 |
Possibly trivial |
| VLCSA |
-.20 |
.204 |
.5 |
50.8 |
48.7 |
Possibly trivial |
| VLPANG |
.02 |
.875 |
12.6 |
80 |
7.3 |
Unclear |
| PVJP: BL – 8P |
| RFCSA |
-.16 |
.312 |
1.1 |
60.4 |
38.6 |
Possibly trivial |
| RFPANG |
.10 |
.526 |
25.2 |
72.1 |
2.7 |
Possibly trivial |
| VLCSA |
-.10 |
.533 |
2.7 |
72.3 |
25 |
Possibly trivial |
| VLPANG |
.09 |
.557 |
23.8 |
73.2 |
3 |
Possibly trivial |
| PVJP: BL – 20P |
| RFCSA |
-.37 |
.014 |
0 |
11.9 |
88.1 |
Likely Negative |
| RFPANG |
-.04 |
.821 |
6.4 |
79.5 |
14.1 |
Unclear |
| VLCSA |
-.23 |
.135 |
0.3 |
42 |
57.7 |
Possibly Negative |
| VLPANG |
-.05 |
.767 |
5.6 |
78.7 |
15.8 |
Unclear |
| MVJP: BL – 8P |
| RFCSA |
.00 |
.977 |
9.3 |
80.6 |
10.2 |
Unclear |
| RFPANG |
.05 |
.765 |
15.8 |
78.7 |
5.6 |
Unclear |
| VLCSA |
-.06 |
.711 |
4.7 |
77.5 |
17.7 |
Likely trivial |
| VLPANG |
-.35 |
.018 |
0 |
14.2 |
85.8 |
Likely negative |
| MVJP: BL – 20P |
| RFCSA |
.09 |
.583 |
22.6 |
74.2 |
3.3 |
Possibly trivial |
| RFPANG |
.01 |
.935 |
11.2 |
80.4 |
8.4 |
Unclear |
| VLCSA |
.00 |
.985 |
10 |
80.6 |
9.4 |
Unclear |
| VLPANG |
-.04 |
.821 |
6.4 |
79.5 |
14.1 |
Unclear |
RFCSA = rectus femoris cross-sectional area; RFPANG = rectus femoris pennation angle; VLCSA = vastus lateralis cross-sectional area; VLPANG = vastus lateralis pennation angle; PVJP = Peak vertical jump power; MVJP = Mean vertical jump power; BL = baseline; 8P = 8 minutes post-exercise; 20P = 20 minutes post-exercise
