## 4 Discussion
### VR Data Capture and Evaluation
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Study**} & \multirow{2}{*}{**Design Type**} & \multicolumn{2}{c}{**Duration (Total**} & \multirow{2}{*}{**Task Type**} & \multirow{2}{*}{**Experimental**} & \multirow{2}{*}{**Measurement**} \\  & & & **Time, Frequency,** & & **Setting** & **Tools** \\ \hline [PERSON] et al., & Mixed-methods & 5 weeks, & Social, & & IMI, PENS, \\
2023 [12] & study & 99 sessions in total & collaborative & Laboratory & PANAS, and \\  & & 99 sessions/week & VR game & & physical \\  & & & & & exertion data \\ \hline Brazil and Rys, & Repeated- & \multirow{2}{*}{
\begin{tabular}{} \end{tabular} } & 3 trials per & Fine motor task & Ergonomics & NASA TLX, SUS, \\
2024 [16] & measures design & \begin{tabular}{} \end{tabular} & (15 min each) & (object sorting) & laboratory & SSQ, and task \\  & & (15 min each) & & & completion time \\ \hline Campo-Prieto & Single-group & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & 2 sessions over & & & \\  & & 2 days & & Balance training & Laboratory & SUS, SSQ, \\  & & (10–12 min each) & & & and GEQ \\ \hline [PERSON] et al., & Within-subjects & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & 2 sessions (on & VR-based & & \\  & design & separate days) & cognitive games & Laboratory & PANAS, SUS, \\  & & & & cognitive task & scores, and SSQ \\ \hline Corriveau & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & Single session & & & \\  & design & (30–45 min & & memory task & Laboratory & \\  & & & & & \\  & & & & & \\  & & & & & & \\  & & & & & \\  & & & & & \\ \hline [PERSON] et al., & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & Cross-over & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & Single session & & & \\  & randomized & (45–60 min) & & Virtual tourism & Lab and Outdoor & PANAS and SSQ \\  & & & & & & \\ \[PERSON] et al., & Single-subject & Single session & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & Daily task & & & Presence, usability, \\  & case study & (2–3 h) & simulation (e.g., & breakfast prep) & & & stress measures, \\  & & & & & & and SSQ \\ \[PERSON] et al., & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & Within-subjects & Single session & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & & & & NASA TLX, \\  & design comparing & 2D and VR & (30 min) & & & & self-reported \\  & & & (30 min) & & & enjoyment, and \\  & & & & & heart rate \\ \hline [PERSON] et al., & Experimental & Single session & Gait adaptability & & & \\  & study & (30 min) & training & Laboratory & & foot tracking with \\  & & & & & HTC Vive Pro \\ \[PERSON] et al., & Between-subjects & \multirow{2}{*}{\begin{tabular}{} \end{tabular} } & Single session & & & & Presence \\  & design (older vs & (4 VR & Meditation and & & & questionnaire, \\  & younger) & environments, & relaxation task & & NASA TLX, \\  & & & \(-\)40 min) & & & and SSQ \\ \hline [PERSON] et al., & Randomized & \multirow{2}{*}{\
\begin{tabular}{} \end{tabular} } & 6 weeks, 2 & & & & BSS, TUG, ABC \\  & control trial & sessions/week & Balance training & Lab and Home & Scale, FES, \\  & & (45 min each) & & and GDS & & and GDS \\ \hline [PERSON] et al., 2020 [26] & Longitudinal & \multirow{2}{*}{
\begin{tabular}{} \end{tabular} } & 4 weeks, 3 & Multitasking VR & & N-back task, SPM, \\  & experiment & & sessions/week & game (cognitive + & Lab and Home & ANT, PANAS, \\  & & (45 min each) & physical tasks) & and OLSBT \\ \hline \hline \end{tabular}  
* Abbreviations: SSQ: Simulator Sickness Questionnaire; PANAS: Positive and Negative Affect Scale; SUS: System Usability Scale; NASA TLX: NASA Task Load Index; GEQ: Game Experience Questionnaire; SPM: Standard Progressive Matrices; ANT: Attention Network Test; OLSBT: One-Leg Stance Balance Test; IMI: Intrinsic Motivation Inventory; PENS: Presence, Enjoyment, and Narrative Satisfaction; BSS: Balance Error Scoring System; TUG: Timed Up-and-Go Test; ABC Scale: Activity-Specific Balance Confidence Scale; FES: Falls Efficacy Scale; GPS: Geriatric Depression Scale; MoCA: Montreal Cognitive Assessment.  
\end{table}