Abstract
Introduction and purpose: Upper cruciate syndrome can be the reason for many disorders in the body, including: appearance deformity, pain in the back and neck, biomechanical changes in the cervical spine and reduced mobility of the spine and physiological problems; Based on the concepts of the comprehensive approach, the evaluation process is such that the main source of the problem, i.e. the shoulders, is taken into account, and the side effects of the syndrome, i.e. the increase of the dorsal kyphosis angle and the forwardness of the head and shoulders, in line with the waist and pelvis, and in The continuation to the last part of the lower limb is examined; Because the researchers who believe in the comprehensive approach believe that the body is integrated and even a small change in a part of the body leads to a change and disruption of the correct pattern in the whole body and distant parts, for example, people with The soles of the feet are flat. Over time, we can see the changes in the muscle contraction pattern and finally the correct direction in the waist and higher areas. Therefore, according to this theory, the abnormality of the upper crossed syndrome, in which we have changes in the alignment of the head, back and shoulder vertebrae, can affect the central area of the body and the center of gravity and change its location, because the center of gravity is a function of the degree of dispersion. The mass of the object is around it and it moves in the direction where the mass of the object is greater in that area. Considering that movement performance and walking are among the most important human movement patterns, and also based on the view of researchers such as Jenda, that the body is seen as a whole, and as researchers have studied the effects of various abnormalities such as scoliosis and inferior cruciate syndrome on movement patterns, gait factors and the displacement of the center of pressure have been investigated, it can be concluded that other abnormalities such as upper cruciate syndrome also affect movement patterns and walking patterns and the center of mass of the body. Accurate evaluation and recognition of functional factors, status of high stepping indicators, plantar pressure distribution and center of pressure fluctuations and comparing them with healthy people can be a suitable tool to apply training interventions for sports and movement science specialists. Therefore, the current research aims to answer this question: Does upper crossed syndrome affect the time-spatial parameters of walking and functional indices and static balance in women with upper crossed syndrome?
Methodology: The statistical population of the present study included people with upper cruciate syndrome and healthy people, 30 people were selected as a sample based on the entry and exit criteria. The current research method is descriptive and comparative. Gait parameters and head-forward and shoulder-forward angle by digital camera, center of pressure by using Wii Balance Board (WBB), kyphosis angle by flexible ruler and performance indicators by using kit FMS was measured. In order to investigate the difference between the group of healthy people and those with upper crossed syndrome, independent t-test was used.
Results: The results showed that in terms of the spatio-temporal parameters of walking (step length, walking speed, step frequency, step time, right step length, left step length and symmetry index), between the two groups of people with the syndrome There is no significant difference between the upper cruciate and healthy subjects (p≥.05). There was a significant difference in the level of FMS functional indices between the two groups of people with upper cruciate syndrome and healthy people (p≤.05). Also, there is a significant difference between the two groups of people with upper cruciate syndrome and healthy people in the displacement of the center of pressure, including anterior-posterior oscillations and internal-external oscillations (p≤.05).
Discussion and conclusion: It seems that in upper cruciate syndrome, the spatio-temporal variables of walking are not disturbed, and other parameters should be considered in identifying the causes and complications of this abnormality. On the other hand, this syndrome affects performance indicators and balance. Therefore, it is recommended that the trainers of corrective movements consider the above factors in the rehabilitation and correction of this syndrome.