אימונים Relationships among peak power output, peak bar velocity, and mechanomyographic ampli

[Mike Bikov]

J Sports Sci. 2010 Sep 14:1-9. [Epub ahead of print]
Relationships among peak power output, peak bar velocity, and mechanomyographic amplitude during the free-weight bench press exercise.

Stock MS, Beck TW, Defreitas JM, Dillon MA.

Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA.
Abstract

The purpose of this study was to examine the relationships among mechanomyographic (MMG) amplitude, power output, and bar velocity during the free-weight bench press exercise. Twenty-one resistance-trained men [one-repetition maximum (1-RM) bench press = 125.4 ± 18.4 kg] performed bench press muscle actions as explosively as possible from 10% to 90% of the 1-RM while peak power output and peak bar velocity were assessed with a TENDO Weightlifting Analyzer. During each muscle action, surface MMG signals were detected from the right and left pectoralis major and triceps brachii, and the concentric portion of the range of motion was selected for analysis. Results indicated that power output increased from 10% to 50% 1-RM, followed by decreases from 50% to 90% 1-RM, but MMG amplitude for each of the muscles increased from 10 to 80%1-RM. The results of this study indicate that during the free-weight bench press exercise, MMG amplitude was not related to power output, but was inversely related to bar velocity and directly related to the external load being lifted. In future research, coaches and sport scientists may be able to estimate force/torque production from individual muscles during multi-joint, dynamic constant external resistance muscle actions.

PMID: 20845222 [PubMed - as supplied by publisher]​

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[EMZ]

נראה מסקרן. יש לך את המלא בשליפה מהירה?

 

[Mike Bikov]

לא, אם ממש תרצה אנסה להשיג

 

[EMZ]

ניסיתי לחפש ולא מצאתי כלום. אין גישה בשום אתר.
אם בא לך כשאתה פנוי באמת, אני אשמח. לא דחוף.