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  1. Roy J, Hamidan S, Singh R
    Asian J Sports Med, 2011 Sep;2(3):195-204.
    PMID: 22375239
    Some major competitions (e.g. London Olympics, 2012) are scheduled during the Ramadan fasting month. Little attention has been given to explore the archers' performance related subjective experiences with a qualitative method. Therefore, this study addressed individual archers' subjective experiences within the framework of self-regulation during Ramadan.
  2. Hashim HA, Shaharuddin SS, Hamidan S, Grove JR
    Psychol Rep, 2017 Feb;120(1):141-157.
    PMID: 28558530 DOI: 10.1177/0033294116685868
    This study examined psychometric properties of a Malaysian-language Sport Anxiety Scale-2 (SAS-2) in three separate studies. Study 1 examined the criterion validity and internal consistency of SAS-2 among 119 developmental hockey players. Measures of trait anxiety and mood states along with digit vigilance, choice reaction time, and depth perception tests were administered. Regression analysis revealed that somatic anxiety and concentration disruption were significantly associated with sustained attention. Worry was significantly associated with depth perception but not sustained attention. Pearson correlation coefficients also revealed significant relationships between SAS-2 subscales and negative mood state dimensions. Study 2 examined the convergent and discriminant validity of SAS-2 by correlating it with state anxiety measured by the CSAI-2R. Significant positive relationships were obtained between SAS-2 subscales and somatic and cognitive state anxiety. Conversely, state self-confidence was negatively related to SAS-2 subscales. In addition, significant differences were observed between men and women in somatic anxiety. Study 3 examined the factorial validity of the Malaysian SAS-2 using confirmatory factor analysis in a sample of 539 young athletes. Confirmatory factor analysis results provided strong support for the SAS-2 factor structure. Path loadings exceeding 0.5 indicated convergent validity among the subscales, and low to moderate subscale intercorrelations provided evidence of discriminant validity. Overall, the results supported the criterion and construct validity of this Malaysian-language SAS-2 instrument.
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