# Enhancing Robotic-Assisted Lower Limb Rehabilitation Using Augmented Reality and Serious Gaming
## 4 Proposed Methodology for the Lower Limb Rehabilitation Treatment
### Sensors Placement
The protocol took into account the specific rehabilitation goals, patient needs, and safety considerations, ensuring that the exercises are both challenging and manageable for the patients while promoting gradual improvement in motor function and minimizing the risk of overexertion. The determination of the number of movements per set and the corresponding rest intervals during rehabilitation treatment is a carefully planned process. It involves aligning the previously discussed factors--such as the patient's physical capabilities, therapeutic goals, and overall health--with the specific requirements and objectives of each game mode utilized in therapy. This alignment ensures that the rehabilitation program is both effective and tailored to the patient's needs. Football Mode focuses on helping patients execute precise kicking motions. In this mode, each set consists of 10 to 15 repetitions. This specific range is chosen to provide sufficient exercise for muscle strengthening and the development of coordination skills, without leading to excessive fatigue that could hinder progress or increase the risk of injury. The repetition count is designed to challenge the patient enough to promote muscle memory and neuromuscular improvements while keeping the activity within safe exertion levels. The break sessions between sets in Football Mode are crucial components of the therapy. These intervals are strategically planned to allow the patient's body to recover from the physical exertion of each set. Rest periods help in restoring normal physiological functions such as the heart rate and breathing rhythm, and they prevent the overworking of muscles and joints. By incorporating appropriate rest intervals, therapists ensure that patients maintain proper form and technique throughout the session, which is essential for effective rehabilitation. Each session in Football Mode typically runs for 10 to 15 min, a duration considered optimal for achieving therapeutic goals while maintaining patient engagement and motivation. In contrast, Colors Mode involves a different therapeutic approach, focusing on activities that enhance cognitive functions alongside physical abilities. Each set in this mode entails 10 to 20 movements, reflecting the game's requirement for varied and quick actions to touch different colored circles displayed in rapid succession. The higher number of movements per set is intentional to effectively improve visual-motor coordination, flexibility, and reaction time. The tasks in Colors Mode are designed to be mentally stimulating, requiring the patient to process visual information quickly and respond with precise movements, thereby enhancing cognitive processing speed and motor responsiveness. Due to the increased mental and physical demands of Colors Mode, particularly the rapidly changing tasks and stimuli, break intervals of 1 to 3 min between sets are implemented. These shorter rest periods are sufficient to allow for both cognitive recovery and physical rest, enabling the patient to maintain a high level of performance throughout the session. The break intervals help prevent mental fatigue, which can impair reaction time and coordination, and they provide a necessary pause to prevent physical overexertion. Sessions in Colors Mode typically last approximately 15 min. The extended session duration allows for a substantial number of repetitions and practice opportunities, which are essential for reinforcing the therapeutic objectives of improving coordination and reaction time. At the same time, the duration is carefully managed to prevent fatigue and to address any attention-related challenges that might arise due to the intensity and complexity of the tasks. Therapists monitor the patient's responses to adjust the session length and intensity as needed, ensuring that the patient remains engaged and focused and benefits maximally from the rehabilitation exercises without experiencing burnout.