Regular physical activity is an important factor of health in youth. Unfortunately, in Chile 85% of adolescents do not achieve the 60 min daily recommendation of moderate-to-vigorous physical activity. Physical education, school recess and after-school time are considered crucial environments for adolescents to meet the recommended moderate-to-vigorous physical activity levels. This study compared the moderateto-vigorous physical activity levels between physical education, school recess and after-school time in Chilean secondary school students, and examined the influence of gender and weight status. A hundred and fifty-six Chilean secondary school students (finally 89 participants were included), aged 13-14 years, were monitored by objective measures of moderate-to-vigorous physical activity during physical education, school recess and after-school time. Results indicated statistically significant differences in moderate-to-vigorous physical activity between contexts (total minutes: After-school time>physical education>school recess; percentage: Physical education>after-school time=school recess, p<.001) as well as a gender-related influence (boys>girls, p<.05). Policy-makers are encouraged to increase the number of physical education classes and teachers to ensure that more physical education class time is spent in moderate-to-vigorous physical activity, especially among girls. The increase in students’ moderate-to-vigorous physical activity levels during school recess and after-school time should also be promoted.
Abstract:The purpose of this study was to examine the effects of a one-session-per-week stretching program on hamstring extensibility among schoolchildren in the physical education (PE) setting. Thirty seven 9-year-old schoolchildren from two classes were clustered and randomly assigned to an experimental group (n=19) or a control group (n=18). During PE classes, the experimental students performed a 3-minute stretching program once a week throughout academic year (a total of 32 calendar weeks, but 28 weeks of intervention after excluding holidays). Hamstring extensibility (estimated by the classic sit-and-reach test) was assessed at the beginning (week 0), in the middle (week 18) and at the end (week 34) of the stretching intervention program. The results of the two-way analysis of variance showed that the PE-based stretching program improved statistically significantly the students' sit-and-reach scores in the middle and at the end of the intervention (p<.01). Since in PE many curricular contents need to be developed each academic year and the subject is also restricted by its limited curriculum time allocation, teachers could improve students' hamstring extensibility by only a one-session-per-week stretching program. Therefore, in addition to the improvement of students' flexibility levels, this intervention program might permit regular development of other PE curricular contents. This knowledge could help and guide teachers to design programs that guarantee a feasible and effective development of flexibility in the PE setting.
Merino R, Fernández E, Iglesias P, Mayorga D. The effect of Kinesio taping on calf's injuries prevention in triathletes during competition. Pilot experience. J. Hum. Sport Exerc. Vol. 6, No. 2, pp. 305-308, 2011. The aim of the study was to evaluate the subjective perception of the local pain after the competition in triathletes. Before start the warm up the kinesio tape was applied in both legs through "I" technique. After the race triathletes were evaluated about perceived pain and soreness on gastrocnemius and soleos muscle by Borg's scale CR10. During the different competitions in which it was proved, none of the sportsmen suffered contractures or cramps in the musculature of the calves, and according to the scale CR10 the perceived pain was zero or not more than 2. Based on these experimental tests and properties of the kinesio tape, it is possible to recommend its use for triathletes and duathletes for injuries prevention and to avoid contractures or cramps during the competition.
Basados en el campo de energía del cuerpo, los inventores de Power Balance® han creado un holograma que teóricamente funciona a través de frecuencias que se encuentran en nuestro ambiente natural. Sus creadores aseguran que las personas podrían experimentar una mejora del equilibrio, fuerza, flexibilidad, resistencia, concentración, coordinación y tiempo de recuperación, entre otros. El propósito de la presente investigación será evaluar el efecto del holograma Power Balance® sobre el equilibrio, la flexibilidad, la fuerza y la velocidad-coordinación en estudiantes universitarios. Una muestra de 105 jóvenes voluntarios estudiantes universitarios de educación física (edad 20,91±3,36 años; masa 69,69±11,35 kg; talla 171,70±8,07 cm) fue utilizada. Un diseño experimental mixto con grupo control y a doble ciego fue usado para evaluar los posibles efectos del holograma Power Balance® sobre el equilibrio dinámico, la flexibilidad, la fuerza-resistencia abdominal y la velocidad-coordinación medidos con el Test de Equilibrio Dinámico, Sit and Reach, Abdominales en 30 s y Carrera de ida y vuelta 10 x 5 m, respectivamente. Una t de Student para muestras independientes y dependientes fue usada para evaluar los posibles efectos entre-grupo e intra-grupo, respectivamente. El holograma Power Balance® no produce efectos significativos sobre el equilibrio, la flexibilidad, la fuerza y la velocidad-coordinación en estudiantes universitarios. Palabra clave: Power Balance, Equilibrio Dinámico, Flexibilidad, Fuerza Resistencia, Velocidad-coordinación, Jóvenes.Abstract: Based on the body’s energy field, the inventors of Power Balance® have created a hologram that theoretically runs through frequencies that are in our natural environment. Its creators say that people may experience improve balance, strength, flexibility, endurance, concentration, coordination and recovery time, among others. The purpose of this research is to evaluate the effect of Power Balance® hologram on balance, flexibility, strength and speed-coordination in university students. A sample of 105 young volunteers’ physical education students (age 20.91 ± 3.36 years, mass 69.69 ± 11.35 kg, height 171.70 ± 8.07 cm) was used. A between-group experimental design with double-blind control group was used to evaluate the possible effects of the Power Balance ® on the dynamic balance, flexibility, abdominal strength, endurance and speed-coordination measured with the Dynamic Balance Test, Sit and Reach, Sit-ups in 30 seconds and Race 10 x 5 m, respectively. A t of Student for independent and dependent samples was used to assess the potential effects between-group and intra-group, respectively. Power Balance®’s hologram produces no significant effects on the balance, flexibility, strength and speed-coordination among university students.Key words: Power Balance, Dynamic Balance, Flexibility, Endurance Strength, Speed-coordination, Young.
En el presente estudio fueron analizadas tres crónicas de periódicos nacionales, uno generalista y dos deportivos, de la final de Copa del Rey de fútbol de 2014, para comprobar si influían en la percepción de justicia de los lectores y si consecuentemente originaban una predisposición determinada a participar en actos de protesta. Participaron 462 estudiantes universitarios. Los resultados mostraron que las diferentes crónicas deportivas causaron diferencias en la percepción de justicia dependiendo del aficionado y de la crónica leída. Sin embargo, no se encontró una clara influencia sobre la predisposición a actos de protesta. Esto debe hacernos recapacitar sobre el impacto de la prensa sobre los lectores aficionados deportivos y tomar conciencia de la responsabilidad de todos los sectores en los comportamientos antisociales generados por el fútbol en nuestro país.
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