Table 1 Overview of experimental conditions in the different studies.

From: A mixed-methods exploration of virtual reality as a tool to promote green exercise

Study

Design

Condition’s name (n)

Description

Duration

Activity level

(Mnd [IQR])

Cybersickness

(Mnd [IQR])

Study 138

Data collected in May 2017

RCT with cross-over design and counterbalanced administration of conditions (15- to 30-min wash-out period). Participants visited the location in reality prior the experimentation

Sedentary*unstable 360° video (n = 26)a

VR exposure while sitting on a chair

10 min

Sedentary

(RPE = 8.00

[6.00–11.00])

Severe

(11pt scale = 8.50

[3.75–10.00])

Active*unstable video

(n = 26)a

VR exposure while walking on a manually-driven treadmill

10 min

Light-intensity

(RPE = 11.00

[9.00–13.00])

Severe

(11pt scale = 7.50

[6.00–9.00])

Study 239

Data collected in June-October 2018

Single blind RCT with parallel groups (randomization based on pre-established order)

Sedentary*unstable 360° video (n = 25)

VR containing oscillations on the horizontal and vertical axis (e.g., due to cameramen locomotion and unwanted vibrations)

10 min

Sedentary

Severe

(SSQ = 33.66

[14.96–99.11])

Sedentary*stable 360° video (n = 25)

VR containing almost no oscillations by using a dolly and an electronic gimbal while recording

10 min

Sedentary

Concerning

(SSQ = 18.70

[1.87–35.53])

Study 340

Data collected in August-December 2020

Single blind RCT with parallel groups (“pick from a hat” randomization). Participants were exposed to stress-elicitation prior the condition by viewing a 2′50’’ film clip (Ray & Gross, 2007)

Active*stable 360° video

(n = 20)

VR developed as a 360° video whilst walking on a manually-driven treadmill

10 min

Light-intensity

(RPE = 9.50

[7.00–13.00])

Severe

(SSQ = 24.31

[15.43–33.66])

Active*stable 3D model

(n = 19)

VR developed as a 3D model whilst walking on a manually-driven treadmill

10 min

Light-intensity

(RPE = 12.00

[10.00–13.00])

Some. symptoms

(SSQ = 14.96

[11.22–33.66])

Control

(n = 21)

Walk on a treadmill whilst staring a blank wall

10 min

Light-intensity

(RPE = 11.00

[8.00–13.00])

Some symptoms

(SSQ = 11.22

[3.74- 22.44])

  1. RPE = Ratings of perceived exertion (6 = “Rest”, 9 = “Very light”, 13 = “Somewhat hard”). 11pt scale = Single item “I got dizzy during the virtual walk”, 11-point Likerst scale (0 = Not at all; 5 = Neutral; 10 = Absolutely). SSQ = Simulator-Sickness Questionnaire (10–15 = Some symptoms; 15–20 = Concerning, > 20 = Severe [Kennedy et al., 2003]). NB: the SQQ include “fatigue” and “sweating” as symptoms, which may have inflated the total score for the “Active” conditions as well as the “Control”.
  2. aParticipants are the same in both conditions as according to cross-over design.