Table 1.

Movement requirements and activity goals for the virtual reality modules.

Session	Module	Movement requirements	VRa activity goal
1 (low-intensity challenge)	1	Walking: any pace Reaching: requires one hand Bending: no Carry weights: no	“Walk at your own pace and rid the realm of monsters. Swing your sword to damage foes and block their attacks with your shield.”
1 (low-intensity challenge)	2	Walking: walking quickly Reaching: requires one hand Bending: no Carry weights: no	“Walk at an increased pace to save as many animals as you can. Monsters have started to prey on the wildlife, and it’s up to you to save the animals before the monster consumes them.”
2 (medium-intensity challenge)	3	Walking: any pace Reaching: requires both hands Bending: no Carry weights: no	“The monsters have desolated the land, and it’s up to you to collect food and coins for the realm. You are given two swords to reach both your foes and your items in all directions.”
2 (medium-intensity challenge)	4	Walking: any pace Reaching: requires one hand Bending: yes Carry weights: no	“Crouch under trees and tunnels to explore more of the realm. You’ll want to make sure you avoid limbs and the ceiling, or you’ll bring your journey to an end.”
3 (high-intensity challenge)	5	Walking: any pace Reaching: requires both hands Bending: yes Carry weights: yes	“Wield a weighted sword and shield while you crouch under trees and tunnels to explore more of the realm. You’ll want to make sure you avoid limbs and the ceiling, or you’ll bring your journey to an end.”
3 (high-intensity challenge)	6	Walking: walking quickly Reaching: requires both hands Bending: yes Carry weights: yes	“Wield a weighted sword and shield to defeat your enemies.”

^aVR: virtual reality.