Detecting bouts of physical activity in a field setting.

The purposes of this study were to assess the TRITRAC and CSA for: (a) interaccelerometer agreement; (b) agreement in detecting patterns of moderate-intensity physical activity; and (c) agreement in detecting walking patterns recorded in a diary. Thirty-one women wore both the TRITRAC and CSA accelerometers for three consecutive days. Interaccelerometer agreement (measured with generalizability coefficients) ranged from .88 to .99. In total, 71.3% of the accelerometers' patterns agreed in length, with CSA patterns being on average significantly longer. Interaccelerometer agreement in detecting patterns of brisk walking, as recorded in a diary, was comparable (69.4%). Interaccelerometer discrepancies may be related in part to the threshold employed by each instrument for classifying moderate intensity patterns.     

Cs高手心得——甩狙三要

利用手枪准镜瞄准，瞬间换狙，在不开任何准镜下开枪。这是在冲锋中常用的枪法。练习时可以在遇到对方时先用手枪连打两枪，这样可以在思维中确立一个对方的大体位置感，然后盲狙射击。初练者很难掌握得好，所以千万不可以操之过急。