A Shionoya, T Shibukura, M Koizumi, T Shimizu, K Tachikawa, M Hasegawa, H Miyake
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The rotational velocity of the drum was detected as voltage by a magnetic permanent motor and transformed to wire tractional velocity; this velocity was equal to swimming velocity. The wire tension (= load) was controlled by a load adjusting lever of the ergometer. This wire tension was equal to the load which was added to the swimmer. The power calculation was based on a curved regression equation approximated from the load and the velocity. This equation was shown as follows; (P + a) (v + b) = (P0 + a)b or its development (P + a)v = b(P0 - P) and provided that P: force or load, v: swimming velocity, P0: maximum tractional force, a and b: constants. This ergometer attachment made it possible to measure and evaluate the power and the maximum anaerobic power in swimming with ease and at low cost. 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引用次数: 19
摘要
如果附件是为特殊目的开发的,或者附件是为多种用途开发的,那么测力计可以是一种通用的测量手段。本研究设计了一种测量功率的测力仪附件,并对游泳中功率和最大无氧功率的测量进行了测试。一个旋转鼓连接在计力计的一个踏板上。这个鼓的旋转与踏板的旋转同步。用于游泳者牵引的金属丝的一端连接到鼓上。金属丝的另一端系在游泳者腰间的腰带上。游泳者以全力游泳,从而使鼓旋转。滚筒的转速由永磁电机检测为电压,并转化为导线牵引速度;这个速度等于游泳速度。导线张力(=负荷)由测力计的负荷调节杆控制。金属丝的张力等于施加在游泳者身上的负荷。功率计算基于负荷和速度近似的曲线回归方程。该方程如下:(P + a) (v + b) = (P0 + a)b或其展开(P + a)v = b(P0 - P),设P为力或载荷,v为游动速度,P0为最大牵引力,a、b为常数。这种测力计附件使得测量和评估游泳中的功率和最大无氧功率变得容易和低成本。测量和评估很容易执行使用系统,这只是一个例子,可能的应用的工效计。
Development of ergometer attachment for power and maximum anaerobic power measurement in swimming.
The ergometer can be a versatile means of measurement if attachments are developed for special purposes or if attachment is developed for multi-uses. In this study, an ergometer attachment for the measurement of power was designed and the measurement of power and the maximum anaerobic power in swimming was tested. A rotation drum was attached to one pedal of an ergometer. The rotation of this drum was synchronized with the rotation of the pedal. One end of a wire for a traction by a swimmer was connected to the drum. The other end of the wire was attached to a belt around the waist of a swimmer. The swimmer swam at full strength, thus causing the drum to rotate. The rotational velocity of the drum was detected as voltage by a magnetic permanent motor and transformed to wire tractional velocity; this velocity was equal to swimming velocity. The wire tension (= load) was controlled by a load adjusting lever of the ergometer. This wire tension was equal to the load which was added to the swimmer. The power calculation was based on a curved regression equation approximated from the load and the velocity. This equation was shown as follows; (P + a) (v + b) = (P0 + a)b or its development (P + a)v = b(P0 - P) and provided that P: force or load, v: swimming velocity, P0: maximum tractional force, a and b: constants. This ergometer attachment made it possible to measure and evaluate the power and the maximum anaerobic power in swimming with ease and at low cost. Measurement and evaluation are easily performed using the system, which is just one example of the possible applications of the ergometer.