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| This readme.txt file was generated on 2020-03-23 by Ryan J. Larsen | |
| GENERAL INFORMATION | |
| 1. Title of Dataset: Magnetic Resonance Spectroscopy Imaging, body composition, and cardiorespiratory fitness: Baseline data from a multimodal intervention study | |
| 2. Author Information | |
| A. Principal Investigator Contact Information | |
| Name: Aron K. Barbey | |
| Institution: University of Illinois at Urbana-Champaign | |
| Email: barbey@illinois.edu | |
| B. Alternate Contact Information | |
| Name: Ryan J. Larsen | |
| Institution: University of Illinois at Urbana-Champaign | |
| Email: larsen@illinois.edu | |
| 3. Date of data collection:2015 | |
| 4. Geographic location of data collection: Champaign-Urbana, IL, USA | |
| 5. Information about funding sources that supported the collection of the data: The research is based upon work supported by the Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA), via Contract 2014-13121700004 to the University of Illinois at Urbana-Champaign (PI: Barbey). The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the ODNI, IARPA, or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright annotation thereon. | |
| SHARING/ACCESS INFORMATION | |
| 1. Licenses/restrictions placed on the data: CC0 1.0 Universal public domain dedication | |
| 2. Links to publications that cite or use the data: "Body mass and cardiorespiratory fitness are associated with altered brain metabolism." Ryan J. Larsen, Lauren B. Raine, Charles H. Hillman, Arthur F. Kramer, Neal J. Cohen, Aron K. Barbey. Metabolic Brain Disease, 2020. | |
| 5. Was data derived from another source? no | |
| 6. Recommended citation for this dataset: Larsen, Ryan; Charles, Hillman; Kramer, Arthur; Cohen, Neal; Barbey, Aron (2021) Magnetic Resonance Spectroscopy Imaging, body composition, and cardiorespiratory fitness: Baseline data from a multimodal intervention study . University of Illinois at Urbana-Champaign. https://doi.org/10.13012/B2IDB-9371397_V1 | |
| DATA & FILE OVERVIEW | |
| 1. File List: | |
| Baseline_Data_Insight1b.csv: | |
| Speadsheet of measures from Magnetic Resonance Spectroscopy Imaging, body composition, and cardiorespiratory fitness | |
| 2. Are there multiple versions of the dataset? no | |
| METHODOLOGICAL INFORMATION | |
| 1. Description of methods used for collection/generation of data: | |
| See "Body mass and cardiorespiratory fitness are associated with altered brain metabolism." Ryan J. Larsen, Lauren B. Raine, Charles H. Hillman, Arthur F. Kramer, Neal J. Cohen, Aron K. Barbey. Metabolic Brain Disease, 2020. | |
| 2. Methods for processing the data: | |
| For a description of analysis performed using this data set, see "Body mass and cardiorespiratory fitness are associated with altered brain metabolism." Ryan J. Larsen, Lauren B. Raine, Charles H. Hillman, Arthur F. Kramer, Neal J. Cohen, Aron K. Barbey. Metabolic Brain Disease, 2020. | |
| For a more detailed description of the method used to process the MRSI data, see | |
| Larsen RJ, Newman M, Nikolaidis A (2016) Reduction of variance in measurements of average metabolite concentration in anatomically-defined brain regions J Magn Reson 272:73-81 doi:10.1016/j.jmr.2016.09.005 | |
| 3. Describe any quality-assurance procedures performed on the data: | |
| For the following subjects, height data have been discarded due to inconsistency with post-intervention height measurement: 1297,1314,1350 | |
| For analysis in the cited article, when Confidence<5, VO2max data were discarded | |
| 4. People involved with sample collection, processing, analysis and/or submission: | |
| Ryan J. Larsen | |
| DATA-SPECIFIC INFORMATION FOR: Baseline_Data_Insight1b | |
| 1. Number of variables: 45 | |
| 2. Number of cases/rows: 435 | |
| 3. Variable List: | |
| Subject Number, arbitrary identifier | |
| Age, units: years | |
| Sex | |
| Height, body height, units: cm | |
| Mass, body mass, units: kg | |
| Total_Lean_Mass, total lean body mass, units: kg | |
| BMI, body mass index, units: kg/m^2 | |
| WBTPF, Whole Body Total Percent Fat | |
| VO2max_abs, VO2max_absolute, units: Liters/min | |
| VO2max_rel, VO2max_relative, units: mL/kg/min | |
| Confidence, a number indicating the degree of confidence in the accuracy of the measurement, a higher number indicates greater confidence | |
| Fat_Free_VO2max, Fat Free VO2max, VO2max_absolute divided by total lean body mass | |
| MRS data | |
| VOI_RL, the Volume of Interest in the Right-Left direction | |
| VOI_AP, the Volume of Interest in the Anterior-Posterior direction | |
| Tech, the technician who performed the scan | |
| Five variables are given for each brain region: | |
| tNAA_Cr is NAA/Cr | |
| GM is gray matter fraction | |
| WM is white matter fraction | |
| CSF is cerebral spinal fluid fraction | |
| scanfrac is the volume fraction of the region within the Volume of Interest | |
| Brain regions are indicated by appending the following indicators to variable names: | |
| Ant_Right is right anterior gray matter | |
| Ant_Left is left anterior gray matter | |
| Pstr_Right is right posterior gray matter | |
| Pstr_Left is left posterior gray matter | |
| WM_Right is right white matter | |
| WM_Left is left white matter | |
| 4. Missing data codes: | |
| Missing numbers are coded as NaN | |
| Missing categorical variables are coded as <undefined> | |