Hill and Barton (2005) showed that fighters in tae kwon do, boxing, and wrestling who wore red jerseys during the 2004 Olympic Games won more often than those wearing blue jerseys. Regarding these results, this study investigated the effects of jersey color during a combat situation on fighters' physical parameters of strength and heart rate. An artificial, experimental combat situation was created in which the color of sport attire was assigned randomly. Fourteen pairs of male athletes matched for weight, height, and age had to fight each other: once in a red jersey and once in a blue. Heart rate (before, during, and after the fight) and strength (before the fight) were tested wearing the blue and the red jerseys. Participants wearing red jerseys had significantly higher heart rates and significantly higher pre-contest values on the strength test. Results showed that participants' body functions are influenced by wearing red equipment.
First results indicate the possibility to counteract obesity and to increase levels of physical fitness and motor development by a multi-component progamme and a multi-sector approach of intervention. The longitudinal design of the study allows having a look on long-term effects.
Children’s self-perception of motor skills and physical fitness is said to be an important mediator between skills and physical fitness on the one hand and physical activity on the other hand. An age-appropriate self-perception scale is needed to understand the development and the differentiation of the physical self-concept of children and its components. Therefore, the objectives of this study were (1) to develop a pictorial scale of physical fitness for pre-school children (3–6 years old), and (2) to describe the face validity and feasibility of the scale. The study sample included 27 kindergarten children. In order to determine the psychometric properties, validity was assessed by administrating the Pictorial Scale for Physical Self-Concept in Kindergarten Children (P-PSC-C) compared with children’s fundamental movement skill competency (Test of Gross Motor Development [TGMD]-3; six locomotor and seven object-control skills), height, weight, and demographics. The face validity was favorable. Expectable negatively skewed response distributions were found in all items. Medium correlations with related constructs and with sport enjoyment were found. The results indicate that the new scale is usable for kindergarten children. Future validation studies are needed so that the new scale can contribute to the research about physical self-concept development in kindergarten children.
The perception of one’s own motor skills can be an important mediator between motor skills and physical activity in childhood. For early childhood, questionnaires are available to measure the self-perception of motor skills (locomotion and object-control) via pictorial scales with one item representing each skill. During childhood, self-perception develops and becomes more complex and differentiated (the physical self-concept). Therefore, the aim of this study was to create a questionnaire in order to adequately assess children’s self-perceptions of fundamental movement skills. A 40-item questionnaire was tested in a pilot study (N = 94) for primary school grades 2–4. Based on the psychometric results, a reduced 24-item questionnaire, Perceived Motor Competence in Childhood (PMC-C), was completed by 197 children between 7 and 13 years of age. The results indicate construct validity (χ2/df = 1.76, N = 197, p < .001, Tucker-Lewis Index = .91, Comparative Fit Index = .90, RMSEA = .06) and internal consistency (object-control .79–.91; locomotion .79–.89) for the 24-item questionnaire. The PMC-C contributes as an extension of the available pictorial scales to assess the skill-oriented physical self-concept in middle and later childhood by covering the perception of multiple aspects of eight different motor skills.
This study examines the influence of wearing and perceiving colors in a cycling setting while also examining cortisol, heart rate, estimated maximum oxygen consumption, and subjective performance ratings. A total of 99 individuals completed the study, consisting of cortisol measurements, which compared baseline values to those after changing into a red or blue outfit, and a maximum cycling task performed wearing the same outfit while competing against a video opponent in red or blue. Each participant completed the protocol twice on separate days. Wearing a colored outfit showed no influence on cortisol levels. Regarding the cycling task, the participants wearing red had higher maximum heart rate values than when wearing blue. In addition, the results revealed increased maximum heart rate and maximum oxygen consumption values when perceiving an opponent in blue, especially when the participant also wore blue. No differences were found for the median heart rate or performance ratings.
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