Supplementary Table 1. Within-session reliability for PF and All RFD across age categories.
| Variable |
Day |
Mean ±
SD |
ICC (95%
CI) |
ICC Interpretation |
CV (95%
CI) |
SEM (95%
CI) |
| PF (All) |
1 |
1722.1 ± 716.1 |
0.97 (0.96-0.98) |
Excellent |
4.6 (3.8-5.3) |
17.94 (16.15-19.74) |
| 2 |
1891.3
± 706.7 |
0.98 (0.97-0.99) |
Excellent |
4.3 (3.5-5.1) |
12.46
(11.21-13.70) |
| 3 |
1856.9 ± 730.3 |
0.97 (0.95-0.98) |
Excellent |
4.9 (3.9-5.9) |
22.97 (20.67-25.26) |
| RFD50
(All) |
1 |
1952.7
± 2171.9 |
0.74 (0.63-0.82) |
Moderate |
53.4 (47.5-59.3) |
562.18
(505.96-618.39) |
| 2 |
2455.0 ± 2039.2 |
0.55 (0.39-0.68) |
Moderate |
49.6 (42.3-57.0) |
921.58 (829.42-1013.73) |
| 3 |
2714.5
± 2162.0 |
0.35 (0.18-0.53) |
Poor |
49.1 (41.8-56.4) |
1403.20
(1262.88-1543.52) |
| RFD100 (All) |
1 |
2369.4 ± 2199.0 |
0.82 (0.73-0.88) |
Good |
41.9 (35.6-48.2) |
399.38 (359.44-439.31) |
| 2 |
2916.5
± 2203.3 |
0.72 (0.60-0.81) |
Moderate |
39.4 (31.9-47.0) |
617.00
(555.30-678.70) |
| 3 |
2973.5 ± 1967.1 |
0.60 (0.45-0.73) |
Moderate |
33.8 (27.7-39.9) |
788.95 (710.05-867.84) |
| RFD150
(All) |
1 |
2505.6
± 1964.0 |
0.82 (0.74-0.88) |
Good |
33.0 (27.9-38.1) |
346.71
(312.04-381.38) |
| 2 |
3003.3 ± 1957.6 |
0.81 (0.72-0.88) |
Good |
29.3 (24.1-34.6) |
366.03 (329.43-402.64) |
| 3 |
3110.8
± 1806.7 |
0.74 (0.62-0.83) |
Moderate |
25.1 (20.6-29.7) |
473.96
(426.57-521.36) |
| RFD200 (All) |
1 |
2547.7 ± 1670.5 |
0.82 (0.73-0.88) |
Good |
26.5 (21.6-31.5) |
305.44 (274.89-335.98) |
| 2 |
3130.3
± 1785.8 |
0.84 (0.76-0.89) |
Good |
23.4 (18.5-28.2) |
290.74
(261.66-319.81) |
| 3 |
3300.9 ± 1683.3 |
0.84 (0.75-0.90) |
Good |
19.7 (15.7-23.7) |
275.20 (247.68-302.72) |
| RFD250
(All) |
1 |
2551.8
± 1441.3 |
0.85 (0.78-0.90) |
Good |
19.4 (15.3-23.4) |
218.14
(196.33-239.96) |
| 2 |
3075.9 ± 1551.8 |
0.86 (0.78-0.91) |
Good |
17.4 (13.2-21.7) |
221.53 (199.37-243.68) |
| 3 |
3131.0
± 1469.4 |
0.90 (0.85-0.94) |
Excellent |
14.5 (11.3-17.6) |
140.38
(126.34-154.42) |
| PF (U12) |
1 |
946.2 ± 176.5 |
0.96 (0.90-0.98) |
Excellent |
3.5 (2.3-4.7) |
7.65 (6.88-8.41) |
| 2 |
1056.0
± 191.7 |
0.85 (0.69-0.95) |
Good |
5.4 (2.6-8.2) |
27.73
(24.96-30.51) |
| 3 |
994.7 ± 159.4 |
0.91 (0.79-0.97) |
Excellent |
4.2 (2.7-5.8) |
14.24 (12.82-15.67) |
| RFD50
(U12) |
1 |
1088.9
± 673.8 |
0.41 (0.13-0.69) |
Poor |
45.2 (36.9-53.5) |
394.38
(354.94-433.82) |
| 2 |
1381.8 ± 895.1 |
0.38 (0.06-0.70) |
Poor |
46.3 (30.6-62.1) |
551.17 (496.05-606.29) |
| 3 |
1429.3
± 868.9 |
0.15 (0.00-0.53) |
Poor |
53.9 (38.9-68.9) |
730.37
(657.33-803.41) |
| RFD100 (U12) |
1 |
1243.7 ± 731.4 |
0.59 (0.32-0.80) |
Moderate |
35.4 (25.2-45.6) |
294.98 (265.48-324.48) |
| 2 |
1469.3
± 871.6 |
0.48 (0.14-0.75) |
Poor |
44.8 (27.8-61.8) |
450.97
(405.87-496.06) |
| 3 |
1497.4 ± 695.8 |
0.25 (0.00-0.61) |
Poor |
36.8 (21.1-52.4) |
518.31 (466.48-570.14) |
| RFD150
(U12) |
1 |
1364.9
± 740.5 |
0.73 (0.51-0.88) |
Moderate |
30.2 (20.9-39.5) |
196.96
(177.27-216.66) |
| 2 |
1597.1 ± 821.7 |
0.53 (0.20-0.79) |
Moderate |
34.5 (22.7-46.3) |
382.10 (343.89-420.31) |
| 3 |
1542.3
± 619.2 |
0.51 (0.18-0.79) |
Moderate |
23.3 (12.9-33.8) |
302.10
(271.89-332.31) |
| RFD200 (U12) |
1 |
1372.7 ± 626.3 |
0.74 (0.51-0.88) |
Moderate |
25.0 (13.6-36.3) |
164.28 (147.85-180.71) |
| 2 |
1779.9
± 732.3 |
0.52 (0.19-0.78) |
Moderate |
26.4 (14.6-38.2) |
347.73
(312.96-382.50) |
| 3 |
1653.7 ± 648.9 |
0.65 (0.35-0.86) |
Moderate |
23.4 (12.6-34.1) |
227.80 (205.02-250.58) |
| RFD250
(U12) |
1 |
1298.0
± 510.4 |
0.75 (0.53-0.88) |
Moderate |
18.0 (9.3-26.8) |
128.49
(115.64-141.34) |
| 2 |
1726.2 ± 544.2 |
0.55 (0.23-0.80) |
Moderate |
17.7 (7.0-28.4) |
242.08 (217.88-266.29) |
| 3 |
1591.7
± 540.6 |
0.65 (0.35-0.86) |
Moderate |
20.5 (11.4-29.5) |
187.04
(168.34-205.75) |
| PF (U15) |
1 |
1788.4 ± 430.6 |
0.93 (0.87-0.96) |
Excellent |
4.7 (3.5-6.0) |
29.71 (26.74-32.68) |
| 2 |
1941.7
± 504.9 |
0.98 (0.96-0.99) |
Excellent |
3.4 (2.7-4.1) |
11.68
(10.51-12.85) |
| 3 |
1875.5 ± 501.6 |
0.95 (0.90-0.98) |
Excellent |
5.2 (3.8-6.6) |
27.25 (24.53-29.98) |
| RFD50
(U15) |
1 |
1624.4
± 1417.3 |
0.49 (0.26-0.70) |
Poor |
59.7 (51.1-68.3) |
718.45
(646.61-790.30) |
| 2 |
2462.0 ± 1790.3 |
0.40 (0.15-0.63) |
Poor |
51.7 (41.1-62.4) |
1069.01 (962.11-1175.91) |
| 3 |
3107.3
± 2260.6 |
0.31 (0.08-0.59) |
Poor |
44.5 (34.5-54.4) |
1570.90
(1413.81-1727.99) |
| RFD100 (U15) |
1 |
2149.0 ± 1367.9 |
0.56 (0.34-0.74) |
Moderate |
45.8 (36.8-54.7) |
594.35 (534.91-653.78) |
| 2 |
2819.7
± 1538.8 |
0.39 (0.16-0.63) |
Poor |
40.1 (28.3-52.0) |
943.57
(849.22-1037.93) |
| 3 |
3060.5 ± 1732.7 |
0.54 (0.31-0.76) |
Moderate |
31.4 (22.4-40.5) |
797.54 (717.79-877.30) |
| RFD150
(U15) |
1 |
2229.8
± 1067.5 |
0.47 (0.23-0.68) |
Poor |
34.8 (26.8-42.8) |
567.33
(510.60-624.07) |
| 2 |
2869.6 ± 1435.8 |
0.60 (0.39-0.78) |
Moderate |
29.3 (21.6-37.1) |
567.13 (510.41-623.84) |
| 3 |
3117.1
± 1486.4 |
0.58 (0.34-0.77) |
Moderate |
26.0 (18.7-33.3) |
621.81
(559.63-683.99) |
| RFD200 (U15) |
1 |
2322.8 ± 1003.4 |
0.52 (0.29-0.72) |
Moderate |
28.1 (21.0-35.1) |
480.28 (432.25-528.30) |
| 2 |
2975.1
± 1432.9 |
0.72 (0.54-0.85) |
Moderate |
23.8 (16.9-30.7) |
393.86
(354.48-433.25) |
| 3 |
3358.3 ± 1282.2 |
0.70 (0.50-0.85) |
Moderate |
18.3 (12.5-24.1) |
376.70 (339.03-414.37) |
| RFD250
(U15) |
1 |
2491.3
± 931.3 |
0.60 (0.39-0.77) |
Moderate |
20.6 (14.6-26.6) |
368.73
(331.85-405.60) |
| 2 |
2954.5 ± 1129.4 |
0.69 (0.50-0.83) |
Moderate |
18.6 (12.5-24.6) |
345.41 (310.87-379.95) |
| 3 |
3186.7
± 1081.9 |
0.84 (0.70-0.92) |
Good |
11.9 (7.9-15.8) |
175.49
(157.94-193.04) |
| PF (U18) |
1 |
2591.7 ± 472.1 |
0.87 (0.73-0.95) |
Good |
5.6 (3.8-7.4) |
59.23 (53.31-65.15) |
| 2 |
2632.8
± 403.3 |
0.89 (0.75-0.96) |
Good |
5.0 (4.0-6.0) |
44.26
(39.83-48.69) |
| 3 |
2626.8 ± 427.3 |
0.80 (0.59-0.92) |
Good |
5.2 (2.5-7.9) |
83.31 (74.97-91.64) |
| RFD50
(U18) |
1 |
3696.3
± 3381.2 |
0.75 (0.50-0.90) |
Moderate |
51.7 (35.2-68.1) |
846.19
(761.57-930.81) |
| 2 |
3515.4 ± 2679.1 |
0.54 (0.22-0.79) |
Moderate |
49.0 (32.2-65.8) |
1209.39 (1088.45-1330.33) |
| 3 |
3262.5
± 2381.9 |
0.22 (0.00-0.58) |
Poor |
52.2 (34.5-70.0) |
1846.93
(1662.24-2031.62) |
| RFD100 (U18) |
1 |
4241.5 ± 3325.6 |
0.83 (0.64-0.93) |
Good |
42.8 (25.2-60.4) |
563.41 (507.07-619.76) |
| 2 |
4543.5
± 2996.8 |
0.76 (0.51-0.90) |
Good |
32.7 (19.6-45.9) |
721.65
(649.48-793.81) |
| 3 |
4201.3 ± 2237.2 |
0.40 (0.07-0.71) |
Poor |
34.9 (23.8-46.0) |
1320.44 (1188.40-1452.49) |
| RFD150
(U18) |
1 |
4504.2
± 2769.5 |
0.80 (0.58-0.92) |
Good |
33.0 (21.1-44.9) |
550.99
(495.89-606.09) |
| 2 |
4657.6 ± 2374.6 |
0.83 (0.63-0.93) |
Good |
24.2 (14.0-34.3) |
400.03 (360.02-440.03) |
| 3 |
4557.0
± 1833.2 |
0.58 (0.26-0.81) |
Moderate |
25.3 (17.0-33.7) |
754.34
(678.90-829.77) |
| RFD200 (U18) |
1 |
4492.1 ± 1927.6 |
0.70 (0.42-0.87) |
Moderate |
25.6 (15.9-35.3) |
570.14 (513.13-627.16) |
| 2 |
4769.0
± 1861.6 |
0.79 (0.56-0.92) |
Good |
19.6 (10.0-29.1) |
382.08
(343.87-420.29) |
| 3 |
4736.1 ± 1576.1 |
0.70 (0.42-0.87) |
Moderate |
18.6 (11.8-25.3) |
464.95 (418.45-511.44) |
| RFD250
(U18) |
1 |
4280.6
± 1322.5 |
0.66 (0.37-0.86) |
Moderate |
18.8 (10.5-27.0) |
441.83
(397.65-486.01) |
| 2 |
4651.2 ± 1525.7 |
0.80 (0.58-0.92) |
Good |
15.1 (7.1-23.1) |
310.25 (279.22-341.27) |
| 3 |
4468.7
± 1241.8 |
0.78 (0.54-0.91) |
Good |
13.2 (8.2-18.1) |
269.80
(242.82-296.78) |
