Multimodal Dataset of a 30-Day Yoga Intervention: fNIRS, Biochemical, Postural, and Subjective Outcomes

This dataset accompanies the manuscript Multimodal Assessment of a 30-Day Yoga Intervention: Neural (fNIRS), Biochemical, Postural, and Subjective Outcomes. It contains fNIRS (functional Near-Infrared Spectroscopy) recordings organized by group, time point, and task, including intervention and control folders with pre/post resting-state, breath-hold, and affective image paradigms. Participant metadata, IAPS stimulus-order files, optode MNI (Montreal Neurological Institute) coordinates, protocol documents, and manuscript files are also included. The fNIRS recordings are organized in subject-level nirs folders and stored in SNIRF (Shared Near Infrared File Format) format (Brain Imaging Data Structure BIDS-compatible). The dataset supports analyses of prefrontal hemodynamic responses, resting-state functional connectivity, and intervention-related neural changes in the context of multimodal yoga research. Folder Short description Post_Ctrl_Breath Post-control breath-hold fNIRS subset with 18 recordings across 36 folders, 212 MB. It contains the standardized 250 s breath-hold paradigm with five 20 s breath holds followed by 25–30 s recovery periods. Post_Ctrl_Images Post-control affective image-viewing fNIRS subset with 18 recordings across 36 folders, 397 MB. Stimulus markers encode positive, negative, and neutral IAPS categories, with timing and labels provided in the IAPS CSV file. Post_Ctrl_RestingState Post-control resting-state fNIRS subset with 18 recordings across 36 folders, 123 MB. It contains 360 s passive resting-state acquisitions without stimulus files. Pre_Ctrl_Breath Pre-control breath-hold fNIRS subset with 31 recordings across 62 folders, 294 MB. The task used a guided 250 s respiratory modulation protocol with five breath-hold cycles. Pre_Ctrl_Images Pre-control affective image-viewing fNIRS subset with 31 recordings across 62 folders, 607 MB. It includes IAPS-based positive, negative, and neutral stimulus markers, with stimulus order and timing documented in the IAPS CSV file. Pre_Ctrl_RestingState Pre-control resting-state fNIRS subset with 31 recordings across 62 folders, 204 MB. It contains 360 s passive resting-state recordings and no stimulus-related files. Post_Interv_Breath Post-intervention breath-hold fNIRS subset with 26 recordings across 52 folders, 272 MB. It contains the standardized 250 s breath-hold task, guided by PowerPoint cues. Post_Interv_Images Post-intervention affective image-viewing fNIRS subset with 26 recordings across 52 folders, 546 MB. Stimulus timing, order, and category labels are provided in the IAPS CSV file. Post_Interv_RestingState Post-intervention resting-state fNIRS subset with 26 recordings across 52 folders, 163 MB. It contains 360 s passive resting-state acquisitions after the 30-day yoga intervention. Pre_Interv_Breath Pre-intervention breath-hold fNIRS subset with 26 recordings across 52 folders, 293 MB. The task consisted of five 20 s breath holds followed by 25–30 s normal-breathing periods. Pre_Interv_Images Pre-intervention affective image-viewing fNIRS subset with 26 recordings across 52 folders, 563 MB. Two presentation sequences were used to reduce habituation, with participant assignments stored in participants.tsv. Pre_Interv_RestingState Pre-intervention resting-state fNIRS subset with 26 recordings across 52 folders, 183 MB. It contains 360 s resting-state recordings before the yoga intervention, with participant metadata and optode localization files provided separately.