# Evaluation of a Myoelectrical Arm for Transradial Computation in Functional Activities
## 2 Methodology
### Training Program  
The purpose of these tasks is to help the participant perform the tasks involved in ADLs, such as reaching and grasping the objects (cup and fruit) by using the prosthesis, cutting vegetables, opening jars, holding food trays, or typing on a keyboard, which involves using both hands. The training procedure was developed by considering the range of motion, center of mass, and moment of the arm while performing these daily tasks [20]. The fact that the training should be able to broadly apply to daily tasks, incorporatingcompound movements while also being simple and not strenuous was also considered [21]. The five training exercises were thus created. The description of these tasks can be found in Appendix A. The first three exercises were developed during a UDC Senior Capstone project and focused on mimicking daily activities with very little resistance to developing motor skills while using the prosthetic device with the aim of increasing functionality. All exercises are designed to improve control, using slow movements with time markers indicating when a movement should be completed. The first exercise consists of raising and lowering the hand via rotation about the elbow in the sagittal plane while opening and closing the hand, which mimics pulling objects, such as doors, towards the body with a tightened grip. The second exercise entails raising a dowl overhead and then lowering the dowl again. This is a critical movement to master as daily overhead movements have increased moment arms and can generate a large amount of force in the shoulder complex and back muscles if the movement is not performed effectively. Exercise three is performed in the seated position and consists of moving a ball over a divider and rotating the wrist to let the ball fall onto a table. While standing introduces more complex compound motor skills, seated activities, such as movements during a meal where the lower extremities cannot be recruited, also require practice. Exercise four was developed by [PERSON] and involves multiple activities that help the user with more fine motor skills and to become more accustomed to the device features such as grip strength control, adjustments to thumb position, finger position, and finger control. Lastly, exercise five, also developed by [PERSON], helps the user become more familiar with the device's preprogrammed grips by practicing them via Ossur's mobile application.  
The participants were trained for 30 minutes each day for two weeks after the baseline evaluation. To develop good control and positioning of the i-Limb hand, the participant was asked to successfully perform each task at least three times during each training session. During the training program, the participant continued working with the CPO to discuss her performance. The duration and intensity of treatment were selected based on literature sources, discussion with CPO and other clinical researchers in this field, and the device's limited three-week loan period. [PERSON] et al. reported that the initial adaptation training can be structured for the length of one or two weeks [22]. [PERSON] et al. found that the performance of prosthetic control could be improved after two weeks of training with visual biofeedback [23]. Moreover, the relative changes in EMG signal features would decrease exponentially after about two weeks as amputees adapt to the way of muscle contraction after training [24].