Caption:
Figure 1. Joint angle conventions - right hand side
of body only (H = hip, K = knee).
Context:
In addition, various hip and knee joint angular
measures were determined for each step (Figure 1).
Values for hip and knee extension were calculated at
the instance of toe-off for the first and third steps
(right foot toe-off). Joint range of motion (ROM) for
the hip and knee were calculated using the
difference between highest and lowest extension
values during a step (steps 1 and 3). Average hip and
knee angular velocities were calcula ted by dividing
the ROM by the time taken to achieve that ROM
(steps 1 and 3).
Source:
Murphy, A. J., Lockie, R. G., & Coutts, A. J. (2003).
Kinematic determinants of early acceleration in field
sport athletes. Journal of Sports Science and Medicine,
2(4), 144-150. ##00038