Table 2.  The mean relative times (%) at four muscle movement stages. Data are means ( ±SD).
   

Young Group

Older Group

Hip

 Flexors' Concentric Contraction

13.50 (6.88)

.00 (.00) *
  Extensors' Eccentric Contraction

41.04 (9.23)

69.37 (5.12) *
  Extensors' Concentric Contraction

36.81 (2.13)

28.74 (3.66) *
  Flexors' Eccentric Contraction

1.28 (1.94)

1.88 (1.70)

Knee

 Flexors' Concentric Contraction

6.85 (4.44)

28.13 (13.72) *
  Extensors' Eccentric Contraction

58.25 (5.43)

42.29 (14.45) *
  Extensors' Concentric Contraction

30.39 (3.12)

22.67 (6.63) *
  Flexors' Eccentric Contraction

4.50 (2.13)

6.91 (6.10)

Ankle

 Flexors' Concentric Contraction

.00 (.00)

.00  .00)
  Extensors' Eccentric Contraction

67.81 (2.49)

71.15 (4.58)
  Extensors' Concentric Contraction

32.00 (2.44)

28.54 (4.71)
  Flexors' Eccentric Contraction

.18 (.48)

.30 (.53)
* significant difference between groups, p<0 .05.