Rning sources considered by coaches to develop coaching knowledge as coach? (2) Are those representations changing according to the coaches’ professional background namely academic education level, coaching experience and coach education level gender, and the possible interactions between these variables?tion level in order to perform comparative analysis. Coaching experience ranged from 1 to 25 years (8.34 ?8.56). Although coaching experience is a multidimensional variable not well characterized only by years of Tasigna site working as a coach (C ?and Gilbert, 2009) because this study comprises an extensive sample it was not possible to apply a broad range of criteria to characterize this variable. Therefore, years of experience was considered a valid measure to characterize coaching experience. The mark of ten years highlighted by Abraham et al., (2006) as a demand to reach some quality as a coach was used to differentiate the more experienced (more than 10 years of experience: n = 103; 35 ) of the less experienced (1 to 9 years of experience: n = 158; 53,7 ). As higher education (in physical education and sport) has the potential to develop general and specific personal and professional coaching competences (Santos et al., 2010), the coaches were differentiated according their achieved academic education level. Here, 40.2 (n = 135) of the participants had obtained a degree Below Higher Education and 45.8 (n = 154) a Higher Education degree in Physical Education and Sport. Coaches with other Higher Education degrees were not considered as they represent a small group (n = 40; 11.9 ) and its inclusion will preclude the data analysis considered, multivariate analysis of variance (MANOVA). The coach education level was divided into three levels; level I (n = 60, 17.9 ), level II (n = 118, 35.1 ), and level III and IV (n = 116, 34.5 ). In general, the level I is orientated to the beginners athletes (recreational setting), the level II to the intermediate athletes (developmental level) and the level III to the advanced athletes (elite performance level). The level III and IV was aggregated because, in Portugal, they have been similar on the curriculum agenda of national certification programs and coaches perform in the same level of practice, the elite level. All coaches obtained their certifications at the national certification programs. Instrumentation A questionnaire was created with two distinct parts, the first part requested demographic information, such as age, gender, academic education level, coaching experience, coach education level and sport coached and the second part MG-132MedChemExpress MG-132 referred to the learning sources preferences of coaching knowledge. The development of the questionnaire was based on three conceptual frameworks: Sfard’s metaphors of learning (1998) (acquisition metaphor and participation metaphor) and the learning situations of Nelson et al. (2006) (formal, informal and non-formal) and Werther and Trudel (2006) (mediated, unmediated and internal learning situations); and by an analysis from the most representative empirical qualitative studies about the learning sources available in the literature (Abraham et al., 2006; Erickson et al., 2008; Fleurance and Cotteaux, 1999; Irwin et al., 2004; Jones et al., 2003, 2004; Lemyre et al., 2007; Nelson et al., 2006; Reade et al., 2008a; 2008b; Salmela, 1995; Schempp et al., 1998; 2007; Timson-Katchis and North, 2008; Wright et al., 2007). All those studies were carried out using qualitative an.Rning sources considered by coaches to develop coaching knowledge as coach? (2) Are those representations changing according to the coaches’ professional background namely academic education level, coaching experience and coach education level gender, and the possible interactions between these variables?tion level in order to perform comparative analysis. Coaching experience ranged from 1 to 25 years (8.34 ?8.56). Although coaching experience is a multidimensional variable not well characterized only by years of working as a coach (C ?and Gilbert, 2009) because this study comprises an extensive sample it was not possible to apply a broad range of criteria to characterize this variable. Therefore, years of experience was considered a valid measure to characterize coaching experience. The mark of ten years highlighted by Abraham et al., (2006) as a demand to reach some quality as a coach was used to differentiate the more experienced (more than 10 years of experience: n = 103; 35 ) of the less experienced (1 to 9 years of experience: n = 158; 53,7 ). As higher education (in physical education and sport) has the potential to develop general and specific personal and professional coaching competences (Santos et al., 2010), the coaches were differentiated according their achieved academic education level. Here, 40.2 (n = 135) of the participants had obtained a degree Below Higher Education and 45.8 (n = 154) a Higher Education degree in Physical Education and Sport. Coaches with other Higher Education degrees were not considered as they represent a small group (n = 40; 11.9 ) and its inclusion will preclude the data analysis considered, multivariate analysis of variance (MANOVA). The coach education level was divided into three levels; level I (n = 60, 17.9 ), level II (n = 118, 35.1 ), and level III and IV (n = 116, 34.5 ). In general, the level I is orientated to the beginners athletes (recreational setting), the level II to the intermediate athletes (developmental level) and the level III to the advanced athletes (elite performance level). The level III and IV was aggregated because, in Portugal, they have been similar on the curriculum agenda of national certification programs and coaches perform in the same level of practice, the elite level. All coaches obtained their certifications at the national certification programs. Instrumentation A questionnaire was created with two distinct parts, the first part requested demographic information, such as age, gender, academic education level, coaching experience, coach education level and sport coached and the second part referred to the learning sources preferences of coaching knowledge. The development of the questionnaire was based on three conceptual frameworks: Sfard’s metaphors of learning (1998) (acquisition metaphor and participation metaphor) and the learning situations of Nelson et al. (2006) (formal, informal and non-formal) and Werther and Trudel (2006) (mediated, unmediated and internal learning situations); and by an analysis from the most representative empirical qualitative studies about the learning sources available in the literature (Abraham et al., 2006; Erickson et al., 2008; Fleurance and Cotteaux, 1999; Irwin et al., 2004; Jones et al., 2003, 2004; Lemyre et al., 2007; Nelson et al., 2006; Reade et al., 2008a; 2008b; Salmela, 1995; Schempp et al., 1998; 2007; Timson-Katchis and North, 2008; Wright et al., 2007). All those studies were carried out using qualitative an.