KINE 1020 Lecture Notes - Lecture 40: Bone Density, Plyometrics, Soft Tissue
29 Mar 2016
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Document Summary
Limitations of flexibility: mechanical factors: bone structure and muscle bulk, soft tissue crossing a joint (important for sports) Injuries and disease - reduced tissue elasticity: inactivity, age: 35 + more rapid decline plateau slight decline. Warming a joint to 113 f increases flexibility by 20 % Cooling a joint to 65 f decreases flexibility by 10-20: greater prevalence of lbp in smokers. Possibly hormonal changes leading to a decreased bone mineral density. Preventive measures for a healthy back: proper posture, avoid frequent bending, twisting and excessive sitting, flexibility of hamstrings and low back, proper lifting and carrying techniques, proper sleeping posture, maintain healthy body weight. The ability to perform a movement in a short period of time. Movement time- the rate at which a person can propel his body or parts of his body through space. Reaction time- the interval of time between the presentation of the stimulus and the initiation of the response.
