A four-state polar phase chart of one cyclic movement — left and right as closed loops round 0–100% of the cycle, the gap between them shaded, phase sectors labelled at the rim, and an asymmetry index printed signed as well as absolute.
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Return-to-run screen · 12 km/h treadmill · 8 strides averaged
11.7%asymmetry indexKnee flexion (°) · 50 phases
Signed 8.4% — Left runs higher over the cycle · widest gap 8.5° at 66%
Knee flexion through one cycle, Left against Right, sampled at 50 phases. Asymmetry index 11.7% — the summed gap between the sides over their summed mean magnitude. Signed index 8.4%, so Left runs higher over the cycle as a whole. The widest single gap is 8.5° at 66%. Left peaks at 62.4° at 72%. Right peaks at 55.5° at 74%. The radius is Knee flexion from 0° at the hub to 80° at the rim; the angle is percent of one cycle, 0% at twelve o'clock, running clockwise. Phase sectors around the rim: Loading from 0% to 12%, asymmetry 17.9%; Midstance from 12% to 50%, asymmetry 9.5%; Pre-swing from 50% to 62%, asymmetry 17.7%; Swing from 62% to 100%, asymmetry 10.8%. Arrow keys walk the phases round the cycle, Home and End jump to the first and last. Every phase is listed in the table that follows.
Point at the disc — or press Tab and walk the cycle with the arrow keys — to read one phase.
Leftpeak 62.4° at 72%
Rightpeak 55.5° at 74%
gapmean 2.6°
Loading17.9%
Midstance9.5%
Pre-swing17.7%
Swing10.8%
Angle is percent of one cycle, 0% at twelve o'clock, running clockwise; radius is Knee flexion from 0° at the hub to 80° at the rim. The loops close through the 0% seam, and straight segments join measured phases — nothing is smoothed between them.
The asymmetry index is the summed gap between the sides over their summed mean magnitude, ×100, so it is a share of the movement rather than a raw amount. The signed index keeps the direction: a cycle where each side leads in a different sector reads near zero signed while the absolute index stays large — which is why both are printed, and why each sector carries its own index above.
Every sampled phase of the cycle, with the sector it falls in, both sides' Knee flexion and the gap between them.
Phase
Sector
Left
Right
Gap
0%
Loading
7.2°
6.5°
0.7° to Left
2%
Loading
9.3°
7.2°
2.1° to Left
4%
Loading
10.6°
8.6°
2° to Left
6%
Loading
12.8°
10.8°
2° to Left
8%
Loading
15.1°
12.5°
2.6° to Left
10%
Loading
17°
14.6°
2.4° to Left
12%
Midstance
18.9°
15.6°
3.3° to Left
14%
Midstance
20.6°
17.6°
3° to Left
16%
Midstance
21.3°
18.4°
2.9° to Left
18%
Midstance
20.8°
17.8°
3° to Left
20%
Midstance
19.2°
17.4°
1.8° to Left
22%
Midstance
17.2°
16.3°
0.9° to Left
24%
Midstance
15.7°
14.5°
1.2° to Left
26%
Midstance
13°
12.1°
0.9° to Left
28%
Midstance
10.7°
10.4°
0.3° to Left
30%
Midstance
9°
9°
level
32%
Midstance
7.8°
7.5°
0.3° to Left
34%
Midstance
7.1°
7.1°
level
36%
Midstance
6.5°
6°
0.5° to Left
38%
Midstance
6°
6°
level
40%
Midstance
5.8°
5.7°
0.1° to Left
42%
Midstance
6.5°
6.1°
0.4° to Left
44%
Midstance
7.2°
6.4°
0.8° to Left
46%
Midstance
8.2°
7.6°
0.6° to Left
48%
Midstance
9.7°
8.8°
0.9° to Left
50%
Pre-swing
11.8°
10.1°
1.7° to Left
52%
Pre-swing
14.4°
12.8°
1.6° to Left
54%
Pre-swing
18.1°
15.4°
2.7° to Left
56%
Pre-swing
23°
19.3°
3.7° to Left
58%
Pre-swing
29.2°
23.6°
5.6° to Left
60%
Pre-swing
35.4°
29.2°
6.2° to Left
62%
Swing
41.7°
34.2°
7.5° to Left
64%
Swing
48.2°
40°
8.2° to Left
66%
Swing
53.8°
45.3°
8.5° to Left
68%
Swing
58.5°
50.2°
8.3° to Left
70%
Swing
60.7°
53.1°
7.6° to Left
72%
Swing
62.4°
55.4°
7° to Left
74%
Swing
60.9°
55.5°
5.4° to Left
76%
Swing
58.2°
55°
3.2° to Left
78%
Swing
54°
51.6°
2.4° to Left
80%
Swing
48.2°
47.4°
0.8° to Left
82%
Swing
41.4°
42.6°
1.2° to Right
84%
Swing
35.1°
37.2°
2.1° to Right
86%
Swing
28.9°
31.6°
2.7° to Right
88%
Swing
23.7°
26°
2.3° to Right
90%
Swing
18.2°
21.7°
3.5° to Right
92%
Swing
14.4°
17.5°
3.1° to Right
94%
Swing
12.1°
13.4°
1.3° to Right
96%
Swing
9.7°
10.7°
1° to Right
98%
Swing
7.8°
9.1°
1.3° to Right
empty
Knee flexion through the gait cycle
Return-to-run screen · 12 km/h treadmill · 8 strides averaged
No cycle captured yet
Left and Right readings at 3 or more phases of one cycle draw the two loops here.
loading
Knee flexion through the gait cycle
Return-to-run screen · 12 km/h treadmill · 8 strides averaged
Loading Knee flexion through the gait cycle
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Knee flexion through the gait cycle
Return-to-run screen · 12 km/h treadmill · 8 strides averaged
Zyeon UI