UMATUG dataset contains the inertial data collected from a cohort of 69 experimental subjects (including 30 adults over 60 years), during the execution of TUG (Timed-Up-and-Go) mobility tests. 
In particular, the dataset includes the measurements gathered with four wearables SHIMMER devices embedding four sensors (accelerometer, gyroscope magnetometer and barometer) located on four body locations (waist, dominant wrist, ankle and chest). 
The dataset also incorporates the same measurements recorded when the younger subjects (that is, those under 40 years old) repeat the test while wearing a commercial geriatric simulator
The dataset is organized in two main subdirectories. The first one (DATA) in turn consists of 69 different subfolders containing all movement traces collected from a particular participant. The numerical identifier of the corresponding participant is indicated in the name of the subfolder (SUBJECT_XX, with XX ranging from 01 to 69). In each subfolder, all the measurements generated by a Shimmer Unit during an execution of the TUG test are included in a unique CSV (Comma Separated Value) file whose name follows the format:
subject_XX_GERT/NOGERT_TUG_trial_YY_WAIST/WRIST/ANKLE/CHEST.csv 
where:
•	XX is the participant’s identifier.
•	The field GERT/NOGERT indicates whether the participant was wearing the geriatric simulator during the test (value GERT) or not (value NOGERT).
•	YY is a numerical value that identifies the number of repetition or attempt of the test.
•	The field WAIST/WRIST/ANKLE/CHEST informs about the position where the sensor was located during the measurement process.
In these trace files, each line consists of all the measurements taken at a particular instant by the unit from all the four embedded sensors: the triaxial inertial sensors (accelerometer, gyroscope and magnetometer) and the barometer. The measurements in each line, which are separated by commas, are organized in columns as it follows:
 
Column 1	TTimestamp of the data in Unix epoch time (POSIX time) in ms: time elapsed since 00:00:00 Coordinated Universal Time (UTC) on January 1, 1970
Column 2	Value of the x-axis of the accelerometer in m/s2
Column 3	Value of the y-axis of the accelerometer in m/s2
Column 4	Value of the z-axis of the accelerometer in m/s2
Column 5	Value of the x-axis of the gyroscope in °/s
Column 6	Value of the y-axis of the gyroscope in °/s
Column 7	Value of the z-axis of the gyroscope in °/s
Column 8	Value of the x-axis of the magnetometer in microtesla (µT)
Column 9	Value of the y-axis of the magnetometer in microtesla (µT)
Column 10	Value of the z-axis of the magnetometer in microtesla (µT)
Column 11	Value of pressure in Kilopascales (kPa)

The second subfolder of the root or parent directory of the repository, named VIDEO, simply includes two video clips (in MPEG4 format) in which one of the dataset authors executes two test executions (with and without the geriatric simulator) to illustrate the testbed and the monitoring procedure.
In addition, the root folder encompasses two extra files:
•	Readme.txt: a file in plain text providing the basic information of the structure and contents of the dataset.
•	User_data.csv: A CSV-formatted file in which each row describes the personal characteristics of each experimental subject. Thus, each row (as also represented in Table 1) informs about the numerical identifier, gender, age, height, weight and handedness of the corresponding participant.

