# Dataset on Mediolateral Upper-Body Gyroscopic Moment Perturbations During Overground Walking This dataset includes kinematic, kinetic, and EMG data recorded during a perturbed walking experiment using an Angular Momentum Perturbator (AMP). The study involved sixteen adult participants, consisting of one female and fifteen males. Four experimental conditions were tested in consecutive sets. In the first condition, participants walked at their preferred speed on a gait track without wearing the AMP or a safety harness ('base'). In the second condition, they repeated the same walking task while wearing a body-weight support safety harness ('ryse'). In the third condition, participants walked while wearing the AMP with a spinning flywheel, though no active torque perturbations were applied ('gyro'). In the final condition, 48 trials were conducted, including 40 randomized trials with active torque perturbations and 8 control trials without perturbations ('pert'). The 40 perturbation trials comprised four distinct conditions, with 10 repetitions each, involving contralateral and ipsilateral torque directions in the frontal plane at either midstance of the right leg or touchdown of the left leg. The gimbal position and intensity level were held constant for all participants. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## Subjects The study involved sixteen adult participants, consisting of one female and fifteen males, all of whom voluntarily participated. Written informed consent was obtained from each participant prior to the experiment. The experimental protocol was approved by the Human Research Ethics Committee of Delft University of Technology (Project ID: 350), and all procedures adhered to the guidelines and regulations of the Declaration of Helsinki. Before the experiment began, participants also completed the revised Waterloo Footedness Questionnaire to evaluate limb dominance. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## Explanation of data files In the "Data" folder, each subject has a corresponding file named subjData.mat, which contains the following fields: ** kin:** Marker trajectories recorded by the Qualisys motion capture system. ** emg:** Raw EMG data recorded from eight muscles on both legs. ** grf:** Ground reaction force data from the two force plates on the walkway. ** gyro:** Data logged from the Angular Momentum Perturbator (AMP). ** subjID:** Unique ID assigned to each subject. ** protocol:** Study protocol, including the randomization of perturbations. ** gaitEvents:** Walking patterns and their timing. ** ik:** Inverse kinematics data. ** id:** Inverse dynamics data. ** ikAnalysis:** Inverse kinematics analysis from OpenSim. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## Muscle Abbrevations **GLU:** Gluteus maximus muscle: Extends, laterally rotates and lower fibres assist in adduction of the hip joint. The upper fibres assist in adduction. Through its insertion into the iliotibial tract, helps to stabilise the knee in extension [Hermens2000]. **TFL:** Tensor faciae laterale: Flexion and lateral rotation of the knee joint. The long head also extends and assists in lateral rotation of the hip joint [Hermens2000]. **HAM:** Biceps femoris long head muscle: Flexion and lateral rotation of the knee joint. The long head extends and assists in lateral rotation of the hip joint [Hermens2000]. **RF:** Rectus femoris muscle: Extension of the knee joint and flexion of the hip joint [Hermens2000]. **VL:** Vastus lateralis muscle: Extension of the knee joint [Hermens2000]. GAS Gastrocnemius lateralis muscle: Flexion of the ankle joint and assist in flexion of the knee joint [Hermens2000]. **SOL:** Soleus muscle: Plantar flexion of the ankle joint [Hermens2000]. **TA:** Tibialis anterior muscle: Dorsiflexion of the ankle joint and assistance in inversion of the foot [Hermens2000]. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## Used Marker Locations **LTRA, RTRA:** Left and right tragion: Undepressed skin surface point obtained by palpating the most anterior margin of the cartilaginous notch just superior to the tragus of the ear located at the upper edge of the external auditory meatus [Reed1999]. **C7:** 7th cervical vertebra: Depressed skin surface point at the most posterior aspect of the spinous process of the 7th cervical vertebra [Reed1999]. **LACR, RACR:** Left and right acromion: Undepressed skin surface point obtained by palpating the most anterior portion of the lateral margin of the acromial process of the scapula [Reed1999]. **LGTR, RGTR:** Left and right greater trochanter: Undepressed skin surface point at the most lateral prominent of the upper femur. **LLFC, RLFC:** Left and right lateral femoral epicondyle: Undepressed skin surface point at the most lateral aspect of the lateral femoral epicondyle [Reed1999]. **LFIB, RFIB:** Left and right lateral Fibulare: The superior point of the fibula [mcconville1980]. **LLM, RLM:** Left and right lateral malleoius: Undepressed skin surface point at the most lateral aspect of the malleolus of the fibula [Reed1999]. **LCAL, RCAL:** Left and right calcaneus: Undepressed skin surface point at the most posterior prominent of the calcaneus. **LMT1, RMT1:** Left and right 1st metatarsal head: Undepressed skin surface point above the distal head of the 1st metatarsal. **LMT5, RMT5:** Left and right 5th metatarsal head: Undepressed skin surface point above the distal head of the 5th metatarsal. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## References **[hermens1999]** Hermie J Hermens, Bart Freriks, Roberto Merletti, Dick Stegeman, Joleen Blok, Günter Rau, Cathy Disselhorst-Klug, and Göran Hägg. “European recommendations for surface electromyography”. In: Roessingh research and development 8.2 (1999), pp. 13–54. **[mcconville1980]** John T McConville, Charles E Clauser, Thomas D Churchill, Jaime Cuzzi, and Ints Kaleps. Anthropometric relationships of body and body segment moments of inertia. Tech. rep. ANTHROPOLOGY RESEARCH PROJECT INC YELLOW SPRINGS OH, 1980. **[Reed1999]** M P Reed, M A Manary, and L W Schneider. Methods for Measuring and Representing Automobile Occupant Posture. Tech. rep. 724. 1999. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## Licence of this dataset This dataset is licensed under the CC-BY (Attribution) license, which allows you to distribute, remix, modify, and build upon the work, even for commercial purposes, as long as proper credit is given to the original creators. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ## Contact **Omid Mohseni** omid.mohseni@tu-darmstadt.de o.mohseni.sh@gmail.com Technische Universität Darmstadt Institute of Sport Science Centre for Cognitive Science Lauflabor Locomotion Laboratory Alexanderstr. 10 64289, Darmstadt, Germany