درخت حوزه‌های تخصصی

Aim: The Aim of study was to investigate the effect of deception for intensity of exercise on fatigue in female students.Methods: Sixteen subjects were selected randomly among 30 students who volunteered to participate in the study and they performed maximal exercise test (Bruce) in two states. In the first state, the increase in exercise intensity during steps of Bruce test was correctly announced to the subjects, but in the second state, they were dictated that the increase in exercise intensity was less than in the first state. Dependent variables were measured at the end of the test and the data were compared with paired t-test using SPSS 23.Findings: The results showed that there was a significant difference for median frequency of rectus femoris muscle (p=0.043), maximium heart rate of the subjects at the end of Bruce test (p=0.001) and time to reach exhaustion (p=0.001) between the first state in which the actual increase in exercise intensity during steps of Bruce test was announced to the subjects and the second state in which they were dictated that the increase in exercise intensity, was less than the first state. However, no significant difference was observed for median frequency of vastus medialis (p=0.736) and vastus lateralis (p=0.762) muscles, as well as for rate of perceived exertion (p=1.000). Conclusion: According to the results, it seems that by deception for intensity of exercise during maximal exercise test, the amount of fatigue can be reduced and the time to reach fatigue can be increased.

Aim: The primary propose of the current study is to propose a model for predicting suicidal ideation based on early maladaptive schemas, with the mediation of interpersonal needs among high school students.Method: Employing a Structural Equation Modeling (SEM) approach, the research investigated the interplay between early maladaptive schemas and interpersonal needs. The methodology was purposefully, applied research, correlational in its descriptive nature, and rigorously adherent to the SEM design . The study encompassed the entire second-grade high school student population in Qazvin City during the academic year 2022-2023. A stratified multistage cluster sampling method systematically extracted a random sample of 600 students. Data collection utilized three standardized instruments: Beck's Suicidal Ideation Scale (BSSI), Young Schema-Short Form (YSQ-SF), and the Interpersonal Needs (INQ). Robust data analysis employed SPSS 25 and Smart PLS softwareFindings: The results indicated that maladaptive schemas exerted an indirect influence on suicidal ideation, mediated through interpersonal needs. Conversely, no direct effect of maladaptive schemas on suicidal ideation was observed. Maladaptive schemas, however, exhibited a direct association with interpersonal needs, (thwarted belongingness and perceived burdensomeness), both of which demonstrated a direct correlation with suicidal ideation. The model's adequacy was confirmed through goodness-of-fit indices.Conclusion: The theoretical implications of this study significantly contributed to the understanding of the intricate relationships influencing suicidal ideation among high school students. Furthermore, the practical applications of these findings extended to educational organizations and counseling centers, offering valuable insights for the development of targeted interventions aimed at reducing suicide rates in this demographic.