JOURNAL OF SPORT BIOSCIENCE RESEARCHES
Year:2012 | Volume:2 | Issue:8|Papers Count:8

Introduction: the aim of this semi-experimental research was to review the training micropause's effect on functional disability on employees with low back pain. Methodology: this study is a semi-experimental research with pre- and post-test design type. The subjects were two groups (n=17) of male employees at the age range of 50 to 57 years old with the 6 months history of low back pain. The empirical work included performing 1-2 minutes physical training after every half hour work in organizational environment for 6 weeks. The functional disability level at pre- and post-test is evaluated by Ossestery questionnaire. Descriptive and inferential statistic analysis including Kolmogorov-Smirnov and dependent and independent t-tests accomplished at the level of P<0.05 by SPSS software.Results: Statistical outputs bode to significant reduction in experimental group's functional disability while the post-test level of control group's functional disability was equal to pre-test.Discussion: These results imply to the positive effect of interwork training micropause on functional status of chronic low back pain affected employees.

Lumbar curvature is one of the sensitive parts of the spinal cord and one of its important and common complications is spinal injury. The aim of present study is to compare the effect of Williams' exercise and a selected hydrotherapy program on the intensity of female students' back pain and lordosis. Sixty-five participants (22 in each experimental groups and 21 in control group, age range 18-25) were voluntarily taken part in the study. Under the supervision of experimenter the Williams' exercise and hydrotherapy groups performed a 12 week training program (3 sessions each week) and their back pain severity and lordosis angle were evaluated using Quebec questionnaire and flexible cruller. One-way ANOVA and multiple-analysis of variance were used for the analysis of data. The comparison of analysis showed a significant difference between the two methods (p£0.0001), the decrement of lumbar pain (p£0.0001) and lordosis angle (p£0.006) in both experimental groups showed a significant difference following post-operative intervention. In control group no significant difference was seen for the first and second pre-post-test data. Therefore, for lowering the severity of back pain and correcting lumbar lordosis hydrotherapy and Williams' exercises are recommended, respectively. However, for simultaneous complications of hyperlordosis and lumbar pain absolutely none of the methods were used. Hence the recovery of the condition depends on the right selection and also time of the exercises and the correction by each method requires specific qualifications that the specialists deal with.

Introduction: Anterior Cruciate Ligament (ACL) is one of the main knee stabilizing ligaments (1). ACL helps to preserve the dynamic, static stability and motor coordination of knee joint. ACL injuries have a great effect on the motor performance of knee and balance individuals (2). In this study, the effect of acceleratory trainings on the dynamic and static stability of the lower extremity of those athletics undergone ACL operation via arthroscopy has been evaluated.Methods: In this research, 30 volunteers who had undergone reconstruction of ACL via BPTBG with average age 28.7 were selected and then randomly divided into two control and experimental groups that each one includes 15 subjects. Experimental group started accelerated rehabilitation program and continued that for 24 weeks and control group attended the general physiotherapy course. At the end of the 3rd, 6th and 9th months, the dynamic and static balance was evaluated. Repeated measure ANOVA was used for the comparisons of assessment times’ means, and independent T test was used for comparison of two groups’ results at 0.05 levels.Results: In both groups, the dynamic and static balance operated lower extremity was less than healthy ones. The dynamic and static balance knee was significantly greater in experimental group compared to control group. The dynamic and static stability of the lower extremity was higher in the experimental group (p=0.05).Conclusion: results indicate that, after reconstruction of ACL and rehabilitation period malfunctions will not be perfectly removed in the dynamic and static balance of athletics.Too the results point out that the neuromuscular trainings program should play a significant role on rehabilitation program for better rehabilitation of athletics.

The purpose of this study was comparing the effect of ipsi lateral and contra lateral of eye-hand accuracy in free throw of basketball. Recent studies showed significant difference exist between motor performances of ipsi lateral and contra lateral people. We compared the shooting performance of 30 ipsi lateral and 28 contra lateral dominant university students. The free throw shot in basketball was selected as an experimental task, each subject was allowed a total of 30 free throws. The results showed that there were statistically significant difference in free throw shooting accuracy between the ipsi lateral and contra lateral dominant subjects (t=4.072, P<0.0001). It is possible that the superiority of the players is more aligned with the line of vision ahead of them. This result has important interpretations one of them is separating out the effects of temporary and permanent affects the players learning. However, further research is needed to distinguish the reasons of difference between the ipsi and contra lateral players.

The purpose of this research is to examine contextual interference effect on performance of three different types of handball skills. 48 girl students from secondary school of West Islamabad had been chosen that any of them had never participated in Handball competition. All of the students have participated in pretest and then had been randomly divided into 3 equal major groups. Each major group divided once again into 2 minor groups named as Blocked and Random groups, each of which contains 8 students. Each group exercised in 8 sessions with a specialized program for the group. In experiment 1, tasks were push shot from 6, 7.5 and 9 meters distance. In experiment 2, tasks were push shot, leys hot and layup. In experiment 3, tasks were push shot, dribbling and chest pass. Results showed that differences between various methods of arrangements and performing exercise in acquisition phase were not significant. In conclusions the results of this research according to Lee & White (1990) showed that field tasks needs too much practice trials to appear the contextual interference effect. But differences between various methods of arrangements and performing exercise in transfer phase were significant. These results support the Action plan reconstruction hypothesis (Lee & Magill, 1985).

Background: Amputation is one of the major causes of durable disability. One of the complications of amputation is impairment in balance performances. The purpose of this study is to evaluate the effects of eight weeks aquatic exercise on static balance in men with unilateral lower limb amputation.Methods: Nineteen veterans men with lower limb amputation are randomly divided into control (n=10) and experimental (n=9) groups. First the static balance between two groups was measuring by the stability platform device. Then the experimental group performed eight weeks aquatic exercises in a pool, while the control group was doing only their daily activities. After eight weeks the static balance in both groups was measured again. The data were analyzed statistically using the student's t-test for comparisons between and within the groups before and after the intervention (p<0.05).Results: Results showed that the difference between pre-test and post-test scores was statistically significant in experimental group, while this difference was not observed in the control group. Also, between the post-test scores of the experimental and control groups, there are significant differences, but between the pre-test scores, no significant difference is observed.Conclusion: It can be concluded that aquatic exercise can improve the static balance of unilateral lower limb amputation. Therefore, this type of exercise can be used in the training and rehabilitation of this group of people.

The present study aimed to examine the relationship between learning organization and organizational agility among expert staff of the Ministry of Youth and Sports of the Islamic Republic of Iran.165 participant of this study were randomly selected from all expert staff of Ministry of Youth and Sports. The instruments used to collect data were the “Dimension of the Learning Organization Questionnaire”, DLOQ, (Watkins and Marsick, 1998) and A research-made Questionnaire. the validity of Questionnaires was approved by physical education instructors and the reliability was calculated as 0.90 and 0.87 by Chronbach's alpha. Collected data were analyzed through descriptive and inferential methods such as Spearman correlation coefficient, analysis of variance (Kruskal-Wallis test) and mann- whitney U test. The results of the study showed that participants’ perceptions of their organization as a learning organization was 53% (mean=4.20, SD=0.54) Also, there was a positive and significant relationship between learning organization and organizational agility (rs=0.462, p<0.01). Moreover, Kruskal-Wallis test showed that there were statistically significant differences in participants’ perceptions of their organization as a agile organization based on their education stand.

The objective of this study was to examine the effects of cane application by elderly men on their gait temporal variables.Methods: Ten elderly men who used to walk without cane were chosen as control group (I). Another 10 elderly men who used to walk with cane for at least three years were selected as experimental group (II). All subjects were over 60 years old. Subjects did not have any serious disease such as Parkinson or any other illnesses that could affect their walking. First, the head, trunk, pelvic, thigh, leg and foot segments in the right side of the body were identified using three spherical markers (1.5 cm in diameter) for each segment. Then using H-Rez Motion Analysis System (240 HZ) with three Falcon cameras the subject's walking was captured and the related kinematics was analyzed. Multivariate Analysis Of Variance (MANOVA) was used for statistical analysis with a=0.05. Results: showed that the stride length in groups I and II was 1341±235 and 1140±68 respectively. The differences between these two values were significant (p=0.01). Also, the walking speed for experimental group (650 m/s) was significantly smaller than that in control group (908 m/s) (p=0.01). The stride duration and stance phase in experimental group were both 16% greater than that in control group (p=0.01).Discussion and conclusion: Cane imposes an additional support surface. When leading on cane, the center of mass shifts towards the cane base of support and therefore the body posture is disturbed. Consequently, the walking pattern is modified. For this reason, slower walking with smaller stride length is seen in elderly men who are used to walk with cane. A particular rehabilitation program might be beneficial for this group.