Table 2. Mean values and standard deviations of IMTP variables by testing day and age categories.
Category
Variable
Day 1
Day 2
Day 3
All
PF (N)
1722.1
± 716.1
1891.3
± 706.7
1856.9
± 730.3
RFD50 (N·s-1)
1952.7
± 2171.9
2455.0
± 2039.2
2714.5
± 2162.0
RFD100
(N·s-1)
2369.4
± 2199.0
2916.5
± 2203.3
2973.5
± 1967.1
RFD150
(N·s-1)
2505.6
± 1964.0
3003.3
± 1957.6
3110.8
± 1806.7
RFD200
(N·s-1)
2547.7
± 1670.5
3130.3
± 1785.8
3300.9
± 1683.3
RFD250
(N·s-1)
2551.8
± 1441.3
3075.9
± 1551.8
3131.0
± 1469.4
U12
PF (N)
946.2 ±
176.5
1056.0
± 191.7
994.7 ±
159.4
RFD50
(N·s-1)
1088.9
± 673.8
1381.8
± 895.1
1429.3
± 868.9
RFD100
(N·s-1)
1243.7
± 731.4
1469.3
± 871.6
1497.4
± 695.8
RFD150
(N·s-1)
1364.9
± 740.5
1597.1
± 821.7
1542.3
± 619.2
RFD200
(N·s-1)
1372.7
± 626.3
1779.9
± 732.3
1653.7
± 648.9
RFD250
(N·s-1)
1298.0
± 510.4
1726.2
± 544.2
1591.7
± 540.6
U15
PF (N)
1788.4
± 430.6
1941.7
± 504.9
1875.5
± 501.6
RFD50 (N·s-1)
1624.4
± 1417.3
2462.0
± 1790.3
3107.3
± 2260.6
RFD100
(N·s-1)
2149.0
± 1367.9
2819.7
± 1538.8
3060.5
± 1732.7
RFD150
(N·s-1)
2229.8
± 1067.5
2869.6
± 1435.8
3117.1
± 1486.4
RFD200
(N·s-1)
2322.8
± 1003.4
2975.1
± 1432.9
3358.3
± 1282.2
RFD250
(N·s-1)
2491.3
± 931.3
2954.5
± 1129.4
3186.7
± 1081.9
U18
PF (N)
2591.7
± 472.1
2632.8
± 403.3
2626.8
± 427.3
RFD50 (N·s-1)
3696.3
± 3381.2
3515.4
± 2679.1
3262.5
± 2381.9
RFD100
(N·s-1)
4241.5
± 3325.6
4543.5
± 2996.8
4201.3
± 2237.2
RFD150
(N·s-1)
4504.2
± 2769.5
4657.6
± 2374.6
4557.0
± 1833.2
RFD200
(N·s-1)
4492.1
± 1927.6
4769.0
± 1861.6
4736.1
± 1576.1
RFD250
(N·s-1)
4280.6
± 1322.5
4651.2
± 1525.7
4468.7
± 1241.8
Data are presented as mean ± SD. PF = peak force; RFD = rate of force development; RFD50—250 = rate of force development at time intervals of 0-50, 0-100, 0-150, 0-200, and 0-250 ms; SD = standard deviation.