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The aim of the present study was to investigate the effect of a dance aerobic intervention program on intrinsic motivation and perceived motivation climate in 7th grade middle school students. The sample of the study consisted of 160 healthy students, of the first grade of middle school. Of these, 91 students was the experimental group and the remaining 69 was the control. The experimental group followed an aerobic dance intervention program for ten weeks, three times per week, with 45-minute sessions while the control group only followed the typical physical education program of the school. In order to conduct the study the following instruments were used: a) the Intrinsic Motivation Inventory (ΙΜΙ -McAuley, Duncan & Tammen, 1989) and the Perceived Oriented Climate (LAPOPECQ; Papaioannou, 1998).

The aim of this study was to investigate: a. the effect of an interdisciplinary program of Greek traditional dance by the means of the teamwork method of teaching social skills to students. b. whether this effect was similar for boys and girls. The sample of the study constituted of 206 elementary school pupils (4th, 5th, and 6th class). The intervention program lasted for two months. There were a total of sixteen lessons (2 per week) which concerned the acquisition of social skills through Greek traditional dance (the experimental group). The method in use was either the group divided work or teamwork. The Greek version (Masadis et al., 2016) of Matson Evaluation of Social Skills with Youngsters (MESSY-II) (Matson et al., 2012) was applied to collect the research data. This in order to be analysed required the following statistical analysis: a. Descriptive statistics b. t-test for independent sample c. Reliability analysis (Cronbach's α) and d. Repeated Measures ANOVA. The findings and the evaluation of the study suggest that the teamwork method is the most appropriate to adopt in social skills learning for the last 3 grades of primary school and traditional dancing the best choice to make.

63 SAI reported 115 injuries that required more than 2 days absence from step aerobic classes. The chronic lower extremity injuries were 73.5%, with the leg pain, the anterior knee pain, the plantar tendinopathy and the Achilles tendinopathy being most common overuse syndromes. The working hours, the platform height, the years of aerobic dance seem to affect the days of absence due to chronic lower limb injury occurrence in SAI.

Malliou, P., Rokka, S.T., Tsiganos, G., Mavromoustakos, S., Godolias, G. (2013). Dance aerobic instructors' injuries in relation to external risk factors, part II. J Hum Sport Exerc., 8(3), pp.813-819. Dance aerobic instructors guide, organize and entertain all aerobics classes suffering, thus, from a number of frequently appearing injuries. The purpose of this study was to examine the musculoskeletal injuries in professional female dance aerobic instructors in relation to external factors such as frequency of participation per day or week, intensity of exercise, the type of aerobic dance, the footwear or the equipment used generally. The sample constituted of 273 female aerobic instructors who were educated in public and state colleges of physical education and sports in Greece. The most important external factors that influence injury appearance were the excessive working hours per day and per week, the mixed and high intensity classes, the different dance aerobic styles, the resilient floor and the inadequate shoes. In conclusion, the present study, in order to eliminate the external injury factors, suggests that dance aerobic instructor should not work for more than three hours a day or more than six hours a week, not participate in a variety of different dance styles, use proper footwear and work on a wooden floor. Finally, further research is needed to monitor all these innovations and the incidence and nature of injuries that are associated with them and to inform instructors of injury prevention developments.