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\"Basic Illustrated Kayaking is a guide to recreational, flatwater kayaking aimed at both beginners and casual paddlers\"-- Provided by publisher.

Nowadays, in modern elite sport, the identification of the best training strategies which are useful in obtaining improvements during competitions requires an accurate measure of the physiologic and biomechanical parameters that affect performance. The goal of this pilot study was to investigate the capabilities of the e-Kayak system, a multichannel digital acquisition system specifically tailored for flatwater sprint kayaking application. e-Kayak allows the synchronous measure of all the parameters involved in kayak propulsion, both dynamic (including forces acting on the paddle and footrest) and kinematic (including stroke frequency, displacement, velocity, acceleration, roll, yaw, and pitch of the boat). After a detailed description of the system, we investigate its capability in supporting coaches to evaluate the performance of elite athletes’ trough-specific measurements. This approach allows for a better understanding of the paddler’s motion and the relevant effects on kayak behavior. The system allows the coach to carry out a wide study of kayak propulsion highlighting, and, at the same time, the occurrences of specific technical flaws in the paddling technique. In order to evaluate the correctness of the measurement results acquired in this pilot study, these results were compared with others which are available in the literature and which were obtained from subjects with similar characteristics.

Readers learn about kayaking and rafting.

En los últimos años, la demanda social de actividades físicas recreativas en el medio natural ha ido creciendo al mismo tiempo que lo hacía la sobreabundancia tecnológica. Este estudio ha pretendido acercarse a los practicantes ocasionales de una de esas actividades, el kayak de mar, con el objetivo de identificar un posible perfil sociodemográfico y, complementariamente, conocer su percepción de competencia personal. Como técnica de recopilación de datos se ha utilizado el cuestionario, administrado a una muestra de 600 usuarios de los servicios de la empresa SK KAYAK en Llançà (Girona). Con relación al perfil sociodemográfico, se ha observado que no hay apenas distinción en el sexo o edad de los participantes, que suelen trabajar como asalariados y que residen en entornos urbanos. Respecto a la percepción de sus propias competencias, se han mostrado deseosos y con necesidades inherentes al ser humano, como disfrutar del entorno natural, ir más allá, conocer nuevos lugares, evadirse, acercarse a la fauna y encontrarse a sí mismos. Y se ha apreciado desequilibrio entre la complejidad del medio marino, su percepción de competencia y la falta de oportunidades de experimentación de que disponen, convirtiendo la incertidumbre de este medio en una barrera para ellos. Se concluye que la práctica del kayak de mar mejora la conciencia ecológica de las personas, devolviendo el equilibrio adecuado a la relación entre el ser humano y la naturaleza más salvaje, recordando la necesidad de una formación apta para el correcto desarrollo en las actividades físicas en el medio natural. Palabras clave: actividades náuticas recreativas, actividad física en el medio natural, características sociodemográficas, aprendizaje competencial, conciencia ecológica. Abstract. In recent years, the social demand for recreational physical activities in the natural environment has been growing at the same time as technological overabundance. The aim of this study was to approach the occasional practitioners of one of these activities, sea kayaking, in order to identify a possible socio-demographic profile and, in addition, to find out their perception of personal competence. A questionnaire was used as a data collection technique, administered to a sample of 600 users of the services of the SK KAYAK company in Llançà (Girona). With regard to the socio-demographic profile, it has been observed that there is hardly any distinction in the sex or age of the participants, who usually work as salaried employees and live in urban environments. With regard to their perception of their own skills, they showed themselves to have desires and needs inherent to human beings, such as enjoying the natural environment, going further afield, getting to know new places, escaping, getting close to wildlife and finding themselves. There was an imbalance between the complexity of the marine environment, their perception of competition and the lack of opportunities for experimentation available to them, making the uncertainty of this environment a barrier for them. It is concluded that the practice of sea kayaking improves people's ecological awareness, restoring the right balance to the relationship between human beings and the wildest nature, recalling the need for appropriate training for the correct development of physical activities in the natural environment. Keywords: recreational nautical activities, physical activity in the natural environment, sociodemographic characteristics, competence learning, ecological awareness.