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Table 1 Baseline data of the intervention and control group

From: Sprint and jump performance in elite male soccer players following a 10-week Nordic Hamstring exercise Protocol: a randomised pilot study

  Nordic group (n = 9) Control group (n = 10)
Age (years) 23.0 ± 3.9 25.1 ± 4.9
Body mass (kg) 73.1 ± 5.8 77.9 ± 9.9
Height (m) 1.83 ± 0.05 1.81 ± 0.07
BMI (kg/m2) 21.8 ± 1.6 23.7 ± 2.0
Cooper test (m) 3052.5 ± 291.4 3102.5 ± 363.2
Squat 1RM load (kg) 93.6 ± 25.1 111.3 ± 8.5
30 m sprint (s) 4.101 ± 0.159 4.036 ± 0.095
5 m split (s) 0.904 ± 0.108 0.838 ± 0.027
10 m split (s) 1.686 ± 0.152 1.599 ± 0.047
CMJ (cm) 43.8 ± 3.7 42.6 ± 6.7
  1. Group mean values and standard deviations obtained in November 2008. BMI body mass index, RM repetition maximum. The Cooper test is a 12-min running test of physical fitness. The squat was performed as a full barbell squat with the femurs parallel to the ground. Some measures involved different number of players; the Cooper test (n = 8 in both groups); the sprint test (n = 9 in the Nordic group and n = 8 in the control group); the countermovement jump test (CMJ; n = 9 in both groups); and Squat 1RM (n = 7 in the Nordic group and n = 4 in the control group)