class 11 health and physical education ncert book chapter 8 · Section 15

Health and Physical Education - XI proprioceptive neuromuscular facilitation (PNF). It requires supervision of a trained person and advanced methods to practice. Physical fitness is not only required for players but also for everyone. One must do various fitness activities to keep oneself physically, emotionally and mentally healthy. Fig. . : Stretching exercise with the help of another person and equipment Body Composition It is the classification of human body into fat weight and lean body weight. It can be assessed using both direct and indirect methods. Direct method for evaluating the body composition is hydrostatic weighing or under water weighing, and assessing body composition by a skin-fold caliper is called indirect method. Cardio-vascular Endurance It is the ability of heart, lungs and blood vessels to supply sufficient amount of oxygen and nutrients to the cells to meet the demands of the activity characterised by moderate contractions of large muscle groups over prolonged period of time. Twelve minutes run/walk test can be used to evaluate cardio-vascular endurance. -