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Articles 31 - 39 of 39
Full-Text Articles in Medicine and Health Sciences
The Role Of Rate Of Force Development On Vertical Jump Performance, Christopher Mclellan, Dale Lovell, Gregory Gass
The Role Of Rate Of Force Development On Vertical Jump Performance, Christopher Mclellan, Dale Lovell, Gregory Gass
Chris McLellan
The purpose of this study was to examine a) the relationship between rate of force development (RFD) and vertical jump (VJ) performance during a counter movement jump (CMJ), and b) the reliability of RFD recorded during the CMJ and squat jump (SJ) forms of the VJ. Twenty-three physically active men aged 23 ± 3.9 years participated in the study. Subjects completed 3 unloaded CMJ and 3 unloaded SJ in random order on a force plate. The RFD was measured during CMJ and SJ movements with vertical jump displacement (VJD) measured simultaneously during the CMJ only. Subjects incorporated arm swing to …
A Comparison Of Asynchronous And Synchronous Arm Cranking During The Wingate Test, Dale Lovell, Dale Mason, Elias Delphinus, Christopher Mclellan
A Comparison Of Asynchronous And Synchronous Arm Cranking During The Wingate Test, Dale Lovell, Dale Mason, Elias Delphinus, Christopher Mclellan
Chris McLellan
Purpose: The aim of this study was to compare asynchronous (ASY) arm cranking (cranks at 180° relative to each other) with synchronous (SYN) arm cranking (parallel crank setting) during the 30 s Wingate anaerobic test.
Methods: Thirty-two physically active men (aged 22.1 ± 2.4 y) completed two Wingate tests (one ASY and one SYN) separated by 4 d in a randomized counterbalanced order. The Wingate tests were completed on a modified electromagnetically braked cycle ergometer. Performance measures assessed during the two tests include peak power, mean power, minimum power, time to peak power, rate to fatigue and maximum …
Two Maximal Isometric Contractions Attenuate The Magnitude Of Eccentric Exercise-Induced Muscle Damage, Hsin-Lian Chen, Kazunori Nosaka, Alan Pearce, Trevor C Chen
Two Maximal Isometric Contractions Attenuate The Magnitude Of Eccentric Exercise-Induced Muscle Damage, Hsin-Lian Chen, Kazunori Nosaka, Alan Pearce, Trevor C Chen
Research outputs 2012
This study investigated whether maximal voluntary isometric contractions (MVC-ISO) would attenuate the magnitude of eccentric exercise-induced muscle damage. Young untrained men were placed into one of the two experimental groups or one control group (n = 13 per group). Subjects in the experimental groups performed either two or 10 MVC-ISO of the elbow flexors at a long muscle length (20° flexion) 2 days prior to 30 maximal isokinetic eccentric contractions of the elbow flexors. Subjects in the control group performed the eccentric contractions without MVC-ISO. No significant changes in maximal voluntary concentric contraction peak torque, peak torque angle, range of …
Effects Of Two Contrast Training Programs On Jump Performance In Rugby Union Players During A Competition Phase, C K Argus, N D Gill, J W Keogh, Michael Mcguigan, W G Hopkins
Effects Of Two Contrast Training Programs On Jump Performance In Rugby Union Players During A Competition Phase, C K Argus, N D Gill, J W Keogh, Michael Mcguigan, W G Hopkins
Research outputs 2012
Purpose: There is little literature comparing contrast training programs typically performed by team-sport athletes within a competitive phase. We compared the effects of two contrast training programs on a range of measures in high-level rugby union players during the competition season. Methods: The programs consisted of a higher volume-load (strength-power) or lower volume-load (speed-power) resistance training; each included a tapering of loading (higher force early in the week, higher velocity later in the week) and was performed twice a week for 4 wk. Eighteen players were assessed for peak power during a bodyweight countermovement jump (BWCMJ), bodyweight squat jump (BWSJ), …
The Acute Effect Of Self-Myofascial Release On Lower Extremity Plyometric Performance, Brian J. Fama, David R. Bueti
The Acute Effect Of Self-Myofascial Release On Lower Extremity Plyometric Performance, Brian J. Fama, David R. Bueti
SHU Theses and Dissertations
The purpose of this study was to evaluate the acute effect of a Foam Roller (FR) warm up routine and a dynamic warm-up routine on strength, power, and reactive power using a squat jump (SJ) countermovement jump (CMJ) and depth jump (DJ). Nine college aged recreational males with a minimum of 1-year experience in plyometric training completed the study. Following baseline testing, subjectswere randomly assigned to a warm up protocol on the second session of the study and then completed the otherprotocol on the third day of the study. The best of three jumps were recorded. RMANOVA revealed a significant …
What Is The Number Needed To Treat When Exercise Training Heart Failure Patients?, Neil Smart
What Is The Number Needed To Treat When Exercise Training Heart Failure Patients?, Neil Smart
Neil Smart
Debate exists on the number needed to treat (NNT) to prevent one mortality with exercise training in heart failure patients. The primary aim of this work was to conduct a sensitivity analysis, removing outlying mortality data from a published meta-analysis of exercise training in heart failure patients. A sensitivity analysis was conducted by removing data from one randomized controlled trial that reported particularly high mortality rates and may be considered a data outlier. Annualized NNTs were subsequently calculated for mortality data from a meta-analysis of exercise training in heart failure patients. Sensitivity analysis showed that the mortality benefit reported by …
A Brief Description Of The Biomechanics And Physiology Of A Strongman Event: The Tire Flip, Justin W.L. Keogh, Amenda L. Payne, Brad B. Anderson, Paul J. Atkins
A Brief Description Of The Biomechanics And Physiology Of A Strongman Event: The Tire Flip, Justin W.L. Keogh, Amenda L. Payne, Brad B. Anderson, Paul J. Atkins
Justin Keogh
The purpose of this study was to (a) characterize the temporal aspects of a popular strongman event, the tire flip; (b) gain some insight into the temporal factors that could distinguish the slowest and fastest flips; and (c) obtain preliminary data on the physiological stress of this exercise. Five resistance-trained subjects with experience in performing the tire flip gave informed consent to participate in this study. Each subject performed 2 sets of 6 tire flips with a 232-kg tire with 3 minutes of rest between sets. Temporal variables were obtained from video cameras positioned 10 m from the tire, perpendicular …
Proprioceptive And Muscle Activation Changes In Triceps Surae Associated With Exercise Induced Muscle Damage, Carmel Nottle
Proprioceptive And Muscle Activation Changes In Triceps Surae Associated With Exercise Induced Muscle Damage, Carmel Nottle
Theses: Doctorates and Masters
The aim of this thesis was to examine proprioceptive and activation changes that occur in triceps surae in response to exercise induced muscle damage (EIMD). While proprioceptive changes have previously been demonstrated in association with EIMD, the present investigation examined the role of a number of potential contributing factors to these changes, following both single and repeated bouts of eccentric exercise.
The Effect Of Long Term Training On The Bone Mineral Density And Muscle Strength Of Perimenopausal Athletes, Jan Dook
Theses: Doctorates and Masters
The aim of this research was to determine if long term training (20 years+) in a high impact weight bearing sport (netball/basketball: NB/88), a low impact weight-bearing sport (running/ field hockey: GEN) and a non weight-bearing sport, swimming (SWI) produced a positive relationship with regional bone mineral density (BMD) and muscle strength. Method: Three groups of perimenopausal athletes (n=20) plus a control group (CON) (n=20) had Total Body BMD and body composition measured by DEXA (Hologic QDR 2000) and isometric strength of dominant arm flexors and leg extensors by a strain tensiometer connected to a strength chair. Differences between groups …