Table 1. Sixteen tasks used to validate the Activ8 activity monitor in a group of able-bodied participants (N = 16).

The tasks (lasting 60 sec each) were performed by all participants in the order of presentation. There was a break between the tasks to instruct the participant about the next task (approx. 1 minute). Tasks were standardized i.e. tasks set-up, as well as instruction given to the participants were the same for all subjects.

Task #	Location	Task description
		Treadmill propulsion at a velocity of:
1	Treadmill	0.28 m/s
2	Treadmill	0.56 m/s
3	Treadmill	1.11 m/s
4	Treadmill	1.67 m/s
5	Treadmill	1.11 m/s and a slope of 3%
		Self-paced propulsion on flat surface at:
6	Corridor	low speed
7	Corridor	normal speed
8	Corridor	high speed
9	Corridor	Being pushed on flat surface with participant’s arms placed on their lap
10	Corridor	Being pushed on flat surface with participant’s arms moving. Participants received a bag with various objects inside. Bag was placed on the participant’s lap. Participant was instructed to take various objects, named by the researcher, one-by-one out of the bag and hand them to the researcher. Participant was instructed to use the right arm to hand the objects. Researcher was walking next to the participant on the right side.
11	Corridor	Simulated setting up a table (maneuvering). There were two tables placed 3 meters apart. Participant was asked to carry items (plastic cups and plates) one by one from one table to another.
12	Corridor	Simulated washing and drying the dishes. Participant had to wash and dry plastic dishes.
13	Corridor	Using a laptop. Laptop is placed on a table in front of the participant. Participant is asked to type for 60s.
14	Corridor	Slaloming at a self-selected velocity (slalom with cones at 0, 1.5, 3, 4.5 and 6 meters). Participant had to slalom in both directions.
15	Corridor	Simulated wheelchair basketball. 2 researchers are standing 6 meters apart. The participant is asked to first propel from researcher 1 to researcher 2 while dribbling the ball every two pushes. Then participant passes the ball 3 times to the researchers and then drives back to researcher 1 (dribbling every 2 pushes) and passes the ball 3 times again. There are two cones placed between researcher 1 and 2 that participant has to go around. The participant should pass each cone on a different side (so for example pass cone on the left side and cone 2 on the right side).
16	Corridor	Going up a slope, turning around and going down a slope in a hallway. The total length of the slope was ~23 meters and inclination was ~5%.