نتایج جستجو برای: pmax

تعداد نتایج: 439  

Journal: :Journal of strength and conditioning research 2008
Nigel K Harris John B Cronin Will G Hopkins Keir T Hansen

Training at a load maximizing power output (Pmax) is an intuitively appealing strategy for enhancement of performance that has received little research attention. In this study we identified each subject's Pmax for an isoinertial resistance training exercise used for testing and training, and then we related the changes in strength to changes in sprint performance. The subjects were 18 well-tra...

Journal: :International journal of sports physiology and performance 2012
Umberto Emanuele Tamara Horn Jachen Denoth

PURPOSE The main aim of this study was to compare the freely chosen cadence (FCC) and the cadence at which the blood lactate concentration at constant power output is minimized (optimal cadence [Copt]). The second aim was to examine the effect of a concomitant change of road incline and body position on FCC, the maximal external power output (Pmax), and the corresponding Copt. METHODS FCC, Co...

Journal: :Medicine and science in sports and exercise 2006
Joel D Trinity Matthew D Pahnke Edwin C Reese Edward F Coyle

INTRODUCTION Insight regarding the fluctuations in neuromuscular function among athletes during a taper is lacking. PURPOSE This study examined the time course of changes in maximal mechanical power (Pmax), torque at power maximum (T), velocity at power maximum (V), and swim performance (m x s(-1)) that occur during the taper. METHODS Using an arm ergometer with inertial loading, measuremen...

Journal: :Clean energy 2023

Abstract Internal combustion engines suffer from high cyclic variations that result in higher emissions, lower efficiency, fuel consumption and poor drivability. The purpose of this study is to investigate how Argemone mexicana biodiesel (AGB)/diesel blended fuels affect the variability parameters such as maximum cylinder pressure (Pmax) indicated mean effective (IMEP) a four-cylinder turbochar...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1388

هدف پژوهش حاضر بررسی اثر دو برنامه تمرین تناوبی شدید (hit) بر اجرای هوازی و بی هوازی مردان فعال انجام شد. 16 دانشجوی مرد فعال به طور داوطلب که به دو گروه تجربی 1 و 2 تقسیم شدند، در این پژوهش شرکت کردند. پیش و پس از تمرینات آزمودنی ها: 1)یک آزمون ورزشی فزاینده را برای تعیین vo2max و حداکثر توان در vo2max(pmax)، 2)آزمون زمان تا واماندگی با pmax(tmax)، 3)3 آزمون متناوب وینگیت با 4 دقیقه بازگشت به ...

Journal: :International Journal of Environmental Research and Public Health 2021

The aim was to determine the relationships among components of force-velocity (F-V) profiles in jumping and sprinting, with both biological chronological ages 89 young soccer players belonging categories from U10 U18. Participants performed countermovement jumps (CMJ) 20-m sprint tests. F-V assessed were associated maturity offset age, using correlation multiple linear regression analyses. Hori...

2002
Carlos M. Li Chwan-Yau Luo Jamie Libman David Francischelli J. Chiu

Introduction: To obtain maximal benefit from dynamic cardiomyoplasty, stimulation parameters of the cardiomyostimulator need to be optimized. The two components for optimization include the muscle channel and the synchronization channel. This study looks at the issue of timing muscle contraction to ventricular contraction. Specifically, we compared 2 methods of obtaining optimal synchronization...

2006
Pasquale Blasi Elena Amato Damiano Caprioli D. Caprioli

Particle acceleration at non-relativistic shocks can be very efficient, leading to the appearance of non-linear effects due to the dynamical reaction of the accelerated particles on the shock structure and to the non-linear amplification of the magnetic field in the shock vicinity. The value of the maximum momentum pmax in these circumstances cannot be estimated using the classical results obta...

2001
Vitali Liskevich Zeev Sobol Hendrik Vogt

We study positive C0-semigroups on Lp associated with second order uniformly elliptic divergence type operators with singular lower order terms, subject to a wide class of boundary conditions. We obtain an interval (pmin, pmax) in the Lp-scale where these semigroups can be defined, including the case 2 6∈ (pmin, pmax). We present an example showing that the result is optimal. We also show that ...

Journal: :Lithosphere 2022

Abstract The shale fracture characteristics are important for realizing the complex hydraulic network, predicting wellbore pressure, and optimizing trajectory rock fragmentation efficiency. Through a three-point bending test of notched semicircular specimens Longmaxi shale, coupled relationship mode-I toughness (Kic), peak force (Pmax), energy release rate (GI), applied work (W), loading was st...

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