| IDEEA Applications |
| Primary |
Secondary |
Accuracy |
Primary |
Secondary |
Accuracy |
|
Sitting |
Upright
(normal) |
99.40% |
Leaning |
Left
shoulder against wall |
98.71% |
| Left
leg over right leg |
99.11% |
Right
shoulder against wall |
100.00% |
| Right
leg over left leg |
98.55% |
Two
elbows on a counter |
99.28% |
| Elbows
on knees |
99.28% |
Average |
99.33% |
| Left
heel up |
99.28% |
|
| Right
heel up |
100.00% |
Lying
Down |
Facing
up |
100.00% |
| Both
heels up |
99.28% |
On
right shoulder |
99.12% |
| Both
feet elevated |
98.55% |
Facing
down |
99.28% |
| Average |
99.18% |
On
left shoulder |
99.28% |
|
Average |
99.23% |
| Standing |
Upright
(normal) |
99.03% |
|
|
| Left
foot on a step |
100.00% |
Limb
movement |
Sit
move left leg |
99.60% |
| Right
foot on a step |
99.57% |
Sit
move right leg |
100.00% |
| Average |
99.53% |
Sit
move both legs |
99.26% |
|
Stand
move left leg |
98.16% |
| Reclining |
Both
feet on the ground |
95.63% |
Stand
move right leg |
99.90% |
| Left
leg over right leg |
99.23% |
Average |
99.14% |
| Right
leg over left leg |
96.84% |
|
| Average |
97.23% |
| Type
of Gait |
Actual
Number |
Number
Detected |
Rate
of Detection |
| Walking |
16,179 |
16,131 |
99.66
% |
| Running |
10,421 |
10,341 |
98.99
% |
| Climbing
Stairs |
3,168 |
3,119 |
98.36
% |
| Descending
Stairs |
3,168 |
3,120 |
98.14
% |
| Jumping |
621 |
600 |
96.60
% |
| Average |
98.35
± 1.14 %
(mean
± SD) |
|
Below is a snapshot of the ActViewTM program used
for the measurement of physical activity and energy expenditure estimates.
ActView is a very powerful windows-based program that can analyze and visualize
the type, duration, frequency, and intensity of physical activity, exercises,
and their energy expenditure estimates. The curves for EE (energy expenditure),
Power, Speed and Raw Data are dynamic. You can play any activity part by point
and drag, or select any period of interest to assess physical activity or
behavior patterns. You can also select the speed of play and unit (e.g., KJ, km/hr)
of your choice, similar to playing videotape. The character on the left will have
a close match to the person, and start to animate the real life postures and
physical activity with very high accuracy.
|
|
|
This screen-grab from ActViewTM summarizes the
percent of each posture and physical activity for a given period. The duration,
counts (such as steps made), and speed of locomotion of physical activity types
are presented in the table to the right. All measures of physical activity,
posture, and behavior pattern are dynamically and instantaneously updated when
you change the observation time, either by selecting from the list at the
top-left or simply by sliding the left/right ends (green color) on the yellow
bar.
|
|
|
IDEEA can analyze locomotion in free-living conditions
with high accuracy, down to every steps made. The up-left graph shows the
instantaneous speed of a person while she was walking (first 3 segments) and
running (last 3 segments) on a track, at 100 meters each segment. The up-right
curve shows the cumulative distance traveled (locomotion). You can see the
highly accurate results measured by the IDEEA physical activity monitor.
Note that 100 m equals 0.062 mile, thus total
distance = .062 x 6 = 0.372 mile. Also note that the flat segments represent
resting periods between activities. The speed distribution (bottom left) was
selected for walk analysis, which has 3 distinctive distributions.
|
|
|
For each type of Physical Activity or posture, the energy
expenditure estimate is also provided, together with the duration, frequency
(count) etc.. There is a subtotal for each body posture, limb or body motion, and
each type of physical activity or exercise. Note you can select any period of
interest of a test, which can last as long as 7 days. As soon as the period
selection is complete, all data will be updated immediately. You can scroll the
bars to view more types of activity, or extend any column of the table on the
bottom-right of the screen-grab below for better view.
|
|
|
Designed for quantifying physical activity and body motion analysis, IDEEA System can compute the power (top left
of screen-grab below), mechanical work (top right), and distributions of power output
for different activity types. You can select different measurement units such
as watt or Kcal/minute, KJ or calories as you wish. You can also print this and
other graphs and tables simply by pressing the print button on the top right. Important
events over different time periods that you have reviewed are remembered by
ActView program so that you can go back to them quickly. This physical activity
monitor is ideal for monitoring fitness training and a great tool for sports trainers.
|
|
Energy expenditure assessment is very important for a
number of researches. The ideal way for assessing energy expenditure would be
minute-by-minute assessment of energy expenditure in free-living, on 24-hr
basis. This is what IDEEA can do. The top-left graph provides the dynamic
energy expenditure estimates of a person while she was walking and running in a
track field. Furthermore, the total energy expenditure (TEE) is plotted cumulatively
on the top-right graph. This enables the assessment of energy expenditure and
TEE for any given activity type or time period.
|
|
|
| |
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