## 3 Methods and Materials
### Materials  
Postural examination is often the initial component of any patient's tests and measurements for any musculoskeletal problem. The therapist looks at the patient from the front, rear and sides. Postural assessment is a critical component of objective evaluation, and ideal static postural alignments have been proposed. However, both static and dynamic postures must be assessed to determine the patient's functional mobility and capacity to self-correct static habits. Scoliosis, postural decompensation, anatomic short leg, previous trauma or surgery, trunk control (after stroke), or particular segmental somatic dysfunctions in areas of the body where asymmetry is present can all be caused by postural misalignment or asymmetries and are very important to assess at the beginning of the rehabilitation program [82; 83]. Stroke causes a wide variety of clinical forms of postural instability and pathological conditions. The variety of stroke and the impairments of the patients is one of the primary challenges in the treatment of postural instability after stroke [84]. Workouts, sensors,modalities, actuators, communications, configurations, and end users were all characterized in the literature review study by [PERSON] et al. [22], where they summarized that real-time biomechanical input can accelerate physical recovery. During a postural assessment, a medic usually measures and records active ROM at all peripheral joints, especially shoulder/upper limbs. Many pertinent questions about the rehabilitation of postural imbalance after stroke are raised:  
* Which physical training method is the most effective? * What is the most important difference between such a specialized technique aimed at postural imbalance and the generalization benefits of a non-specific approach? * Is postural imbalance therapy only a sensory approach? * What is the benefit of technology? * What is the effectiveness of the training program in relation to the period after the stroke? * Which workout intensity is the most effective? * What are the implications for autonomy and quality of life? Causes of limitations may include pain, weakness, muscle shortening, or swelling. Shoulder ROM limitations, muscle performance and strength deficits may can affect changes in posture or incorrect posture. That is why we used full active ROM of shoulder (extension/flexion/rotations) during assessment, as factors most influencing postural changes or occurring compensatory mechanisms (e.g., full shoulder flexion influences trunk control and leads the hyperextension of the back). [PERSON] et al. [85] explored if bilateral standing with visual feedback treatment increases posture and balance after stroke as compared to traditional therapy, as well as the applicability of the benefits of visual feedback treatment on gait and gait-related tasks. [PERSON] et al. 's experimental research [25] included the muscle stimulation location, stimulation parameters, transition of each stage, and transition between each condition. Their findings demonstrated the usefulness of the control technique for clinical rehabilitation-plan formulation and rehabilitation-training execution. The posture recognition experiment was based on the recognition of six fundamental upper-limb motions. By making comparisons with various classification methods, the viability of a fully connected neural network in posture recognition has been determined, and it can be merged with the rehabilitation assessment of patients in the later stage, and it can serve as a reference basis for the evaluation of the extent of rehabilitation of patients, which is extremely important for the recovery of patients. To create the dataset, two motion capture databases were used. The first dataset used to train the neural network is _MoVi_[86], it contains vast amounts of motion capture data from multiple camera perspectives. Each of the videos consist of subjects performing multiple different actions; the videos are captured using regular camera sensors.