|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 4. Mechanical power, net metabolic power and efficiency of positive work
production in walking children. The top row presents the mass-specific total
positive mechanical power
(
tot) as a function of
speed in each age group. The second row shows the net energy consumption rate
at steady state (
net);
these data are taken from DeJaeger et al.
(2001). The efficiency of
positive work production during walking (bottom row) is calculated as
Wtot divided by
net
(equation 6). The values of
efficiency are only presented at speeds above 
0.75 m s–1
where results are considered to be robust (see text). The continuous and
broken lines are fitted through all the data of children and adults,
respectively, using a second-order polynomial function (KaleidaGraph 3.6).
Efficiency is computed from these polynomial functions. Other indications are
as in Fig. 2. Note that in
children younger than six, the efficiency of positive work production during
walking is lower than in adults.
|
