درخت حوزه‌های تخصصی

Background : Chronic non-specific low back pain is extremely common in the general population. Athletes are often at special risk for more serious  associated factors of low back pain, which are often sport-specific in their etiology. Aim: The purpose of this study was to investigate the epidemiology and  associated factors of chronic non-specific low back pain in male athletes of track and field in the national league.     Materials and Methods : A total of 63 individuals were randomly selected to enter the study. The mean age of the subjects with the standard deviation was 25.2±4.5. To investigate the disability due to chronic non-specific low back pain, Oswestry questionnaire was used. For the evaluation of the pain perception, the Visual Analog Scale (VAS) was employed. Statistical analysis was performed using chi-square (χ²), spearman correlation and multiple linear regression at a significance level of 0.05. All statistical calculations were done using SPSS-21 software.  Results: Out of 63 subjects, 32 individuals (50.8%) had chronic non-specific low back pain. Of these, 29 subjects(46%)  had low disability and 3 subjects (4.8%) had moderate disability due to low back pain. None of the participants had  severeor very  severedisability. Pain perception measured using the VAS, had a mean of 35.4%. The most frequent cause of Chronic non-specific low back pain in track and field athletes was high-intensity training (26.7%, n=24), followed by training and activity location (21.1%, n=19) (x 2 = 64.88, p=0.000). The regression analysis showed a significant relationship between high-intensity training and Chronic non-specific low back pain among the mentioned athletes (p≤0.05). Conclusion: The results of this study shows a high epidemiology of Chronic non-specific low back pain in male track and field athletes, which requires serious attention. Additionally, high-intensity training and the location of training and activities were identified as key  associated factors in Chronic non-specific low back pain.

The main purpose of this research was to examine the effect of environmental knowledge on the green purchasing behaviour of equestrian competition spectators, with the mediating role of ethical commitment to the environment. This study was a descriptive correlational investigation, and its statistical population comprised all spectators of the Gonbad-Kavos autumn equestrian competition in 2024. Based on the method proposed by Mueller (2012) for structural equation modelling, the sample size was estimated at 160 spectators. The instruments used to collect data included the Environmental Knowledge Questionnaire by Liang et al. (2016), the Ethical Commitment to Environment Questionnaire by Cui et al. (2024), and the Green Purchasing Behaviour Questionnaire by Kim et al. (2013). The face and content validity of these questionnaires were reviewed and confirmed by five experts in sports management. In a preliminary study, Cronbach's alpha values for the questionnaire variables were 0.77, 0.82, and 0.79, indicating satisfactory reliability. Descriptive and inferential statistics were used to analyse the data. The results showed that environmental knowledge has a positive and significant effect on the ethical commitment to the environment among equestrian competition spectators. Additionally, the effect of environmental knowledge on the green purchasing behaviour of these spectators was also positive and significant. Finally, the findings demonstrated that environmental knowledge positively and significantly influences green purchasing behaviour with the mediating role of ethical commitment. Therefore, it can be concluded that increasing the environmental knowledge of equestrian competition spectators can lead to positive outcomes, such as enhanced ethical commitment to the environment and increased green purchasing behaviour.