P-3-06-04
EFFECTS OF ANTERIOR CRUCIATE LIGAMENT INJURY ON BONE MINERAL DENSITY, SOFT TISSUE MASS AND MUSCLE STRENGTH OF THE LEGS
Shinjiro Takata, Takaaki Ikata, Shinji Kashiwaguchi, Yoshitsugu Takeda, Naoyuki Yoshida, Kiminori Yugata (The university of Tokushima, Tokushima, Japan)
We studied the effects of injury of the anterior cruciate ligament (ACL) of knee on bone mineral density (BMD), soft tissue mass and muscle strength of the leg. The patients were 15 males and 5 females with unilateral ACL injury, whose age ranged from 15 to 37 years. Regional bone mineral density (BMD), bone mineral content (BMC) and soft tissue mass were measured with dual energy X-ray absorptiometry (DXA). The strength of quadriceps and hamstrings was evaluated at velocities of 0, 60, 120 degrees per second using an isokinetic exercise machine. Bone mineral content (BMC), lean mass, %fat values of the injured leg were significantly smaller than those of the intact leg (p<0.05), whereas BMD and fat mass were almost the same in both legs. The peak torque values of quadriceps and hamstrings on the injured side at velocities of 0, 60 and 120 degrees per second were significantly smaller than those on the intact side (p<0.05). The results showed that ACL injury induced markedly bone atrophy, muscle weakness, and muscle atrophy associated with a relative increase in fat mass of an the injured leg.
P-3-06-05
Diagnostic methods of the type and rate of physical deformities arisen from jobs in workers engaged in heavy industries, and suggesting corrective & therapeutical exercises
Abdolhamid Habibi (Chamran University, Ahwaz, IRAN)
Sever pressures resulted from industrial jobs and ignorance of physical capabilities of workers can lead to irreparable injuries in their somatic structure. This study follows two purposes: 1 - defining the type and rate of body deformities in workers' upper part of body, 2 - programming and suggesting corrective & therapeutical exercises regarding each deformity. 195 individuals with ages from 30 to 50 years and hard working services of about 10 years were selected as samples from five industrial plants. The necessary information was gathered through questionnaires as well as body tests according to the scale of New york tests from and the lateral and posterior views of body. Results showed the deformities of: torticolis 5.12%; lordosis 21.2%; Kyphosis 4.10%; scoliosis 11.28; shoulder asymmetry 18.46%; abdominal muscle weakness 28.71%; Also, the factors such as physical condition during the job performance, rate of hour per day, job services, physical formation and exercising have had a Kind of relation with the above deformities (p<0.05). Discussion: Workers having these conditions will increasingly lose their health, get old and have an early-coming death. Informing workers of their job conditions, providing sport equipment and having them exercise before, during and after working hours (under the supervision of the experts), can greatly guarantee workers' health and increase their job efficiency.
