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Full-Text Articles in Kinesiology
A Comparison Of Hypertrophy Potential Between The Vastus Lateralis And Rectus Femoris During Level Walking In Combination With Vascular Restriction., Jose A. Leal Jr., Charity Cavazos, Robert Cardenas, Yoshiaki Sato, Bemben G. Michael, Murat Karabulut
A Comparison Of Hypertrophy Potential Between The Vastus Lateralis And Rectus Femoris During Level Walking In Combination With Vascular Restriction., Jose A. Leal Jr., Charity Cavazos, Robert Cardenas, Yoshiaki Sato, Bemben G. Michael, Murat Karabulut
International Journal of Exercise Science: Conference Proceedings
Recent research has found that by compressing blood flow to working muscle during lower body exercise involving short bouts of walk training results in an increased muscle volume and improved quadriceps strength. However, the effects of vascular restriction (VR) during walking on neuromuscular adaptations as assessed by electromyography (EMG) activity may provide insight on how low intensity training with vascular restriction can be applied to various modes of exercise. PURPOSE: The purpose of this study was to explore and compare muscle activation changes of the quadriceps muscles during walking using EMG with and without blood flow restriction. METHODS: EMG electrodes …
An Investigation Of Lower-Extremity Functional Asymmetry For Non-Preferred Able-Bodied Walking Speeds, John Rice, Matthew K. Seeley
An Investigation Of Lower-Extremity Functional Asymmetry For Non-Preferred Able-Bodied Walking Speeds, John Rice, Matthew K. Seeley
International Journal of Exercise Science
Functional asymmetry is an idea that is often used to explain documented bilateral asymmetries during able-bodied gait. Within this context, this idea suggests that the non-dominant and dominant legs, considered as whole entities, contribute asymmetrically to support and propulsion during walking. The degree of functional asymmetry may depend upon walking speed. The purpose of this study was to better understand a potential relationship between functional asymmetry and walking speed. We measured bilateral ground reaction forces (GRF) for 20 healthy subjects who walked at nine different speeds: preferred, +10%, +20%, +30%, +40%, -10%, -20%, -30%, and -40%. Contribution to support was …
Concurrent Visual Feedback, Practice Organization, And Spatial Aiming Accuracy In Rapid Movement Sequences, David E. Sherwood‡, Brian Duffell*
Concurrent Visual Feedback, Practice Organization, And Spatial Aiming Accuracy In Rapid Movement Sequences, David E. Sherwood‡, Brian Duffell*
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 78-91, 2010. While the availability of visual feedback is a well-known factor influencing the accuracy of rapid aiming movements, little is known about how vision might interact with a contextual variable like practice organization. In the current study, the interaction of concurrent visual feedback (CVF) and practice organization on aiming movement accuracy was investigated in the dominant limb of 40 college-aged participants. Participants performed “triplets” of rapid aiming movements with a lightweight lever in the sagittal plane involving short (20°), medium (40°), long (60°) distances and were randomly assigned to one of four groups …
The Effects Of 2 Different Arm Positions On Maximum Trunk Flexion In The Bodyweight Squat, A. Page Glave, Jacilyn Olson, Danika K. Applegate, Ro Di Brezzo
The Effects Of 2 Different Arm Positions On Maximum Trunk Flexion In The Bodyweight Squat, A. Page Glave, Jacilyn Olson, Danika K. Applegate, Ro Di Brezzo
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Relationship Of Rate Of Loading In Overground And Treadmill Gait, Cameron E. Sheid, Jody L. Riskowski, Huiying Yu
Relationship Of Rate Of Loading In Overground And Treadmill Gait, Cameron E. Sheid, Jody L. Riskowski, Huiying Yu
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Effects Of Surface Depth And Compaction On Impact Deceleration Of Dirt And Synthetic Surface Materials For Equine Racetracks, Akihiro Yamaguchi, Jacob J. Setterbo, Mont Hubbard, Shrinivasa K. Upadhyaya, Susan M. Stover
Effects Of Surface Depth And Compaction On Impact Deceleration Of Dirt And Synthetic Surface Materials For Equine Racetracks, Akihiro Yamaguchi, Jacob J. Setterbo, Mont Hubbard, Shrinivasa K. Upadhyaya, Susan M. Stover
International Journal of Exercise Science: Conference Proceedings
Abstract is attached.
Validity Of Two Dimensional Vicon Motus Software At Varying Camera Angles, Dayanand Kiran, Mary Carlson, Daniel Medrano Jr., Darla R. Smith
Validity Of Two Dimensional Vicon Motus Software At Varying Camera Angles, Dayanand Kiran, Mary Carlson, Daniel Medrano Jr., Darla R. Smith
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Model Predicting Shoulder Distraction Force During Baseball Pitching, David W. Keeley, Gretchen D. Oliver
Model Predicting Shoulder Distraction Force During Baseball Pitching, David W. Keeley, Gretchen D. Oliver
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Daily Knee Joint Laxity In Females Across A Menstrual Cycle And Males Across A Calendar Month, Daniel Medrano Jr., Darla R. Smith, Dayanand Kiran, Mary E. Carlson
Daily Knee Joint Laxity In Females Across A Menstrual Cycle And Males Across A Calendar Month, Daniel Medrano Jr., Darla R. Smith, Dayanand Kiran, Mary E. Carlson
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
The Effect Of Target Height On The Trunk, Pelvis, And Thigh Kinematics In The Taekwondo Roundhouse Kick, Jae-Woong Kim, Je-Min Kim, Sang-Woo Lee, Ki-Hoon Han, Young-Hoo Kwon
The Effect Of Target Height On The Trunk, Pelvis, And Thigh Kinematics In The Taekwondo Roundhouse Kick, Jae-Woong Kim, Je-Min Kim, Sang-Woo Lee, Ki-Hoon Han, Young-Hoo Kwon
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Locomotive Biomechanics Wearing A Simulated Portable Life Support System During Varying Cognitive And Treadmill Grade Conditions, Brittany K. Sanchez, William E. Amonette
Locomotive Biomechanics Wearing A Simulated Portable Life Support System During Varying Cognitive And Treadmill Grade Conditions, Brittany K. Sanchez, William E. Amonette
International Journal of Exercise Science: Conference Proceedings
Background: The Portable Life Support System (PLSS) worn by astronauts during Extravehicular Activity (EVA) is contained within a backpack. Due to the inherent mass of the PLSS, astronaut center of mass (COM) is altered during ambulation. Recent studies from our laboratory suggest shifts in the COM of the PLSS have minimal effects on exercising metabolism, although differences were observed in trunk angles during ambulation. During EVA, astronauts continuously perform cognitive tasks (CG). Due to the distractive nature of these tasks, safety may be compromised by altered biomechanics. Purpose: To quantify lower extremity kinematics while walking with a simulated PLSS at …
Identifying Central Patterns Of Motor Control In Pathological Gait, John S. Ward
Identifying Central Patterns Of Motor Control In Pathological Gait, John S. Ward
International Journal of Exercise Science: Conference Proceedings
Introduction: The central pattern generator (CPG) for walking is an open loop system that drives lower limb movements in a relatively rhythmic fashion once motion has started with minimal need for additional afferent input. The role of the CPG in the pathological gait of Incomplete Spinal Cord Injury (ISCI) and Parkinson’s Disease (PD) has not been studied thoroughly. Understanding how the CPG contributes to motor control in these special populations will serve as a standard upon which to compare new treatments to improve gait function. The purpose of this study was to identify the expression of CPG patterns in individuals …
A Comparison Of Three Computer-Based Methods Used To Determine Emg Signal Amplitude, Doug Renshaw*, Matthew R. Bice†, Camille Cassidy‡, James A. Eldridge‡, Douglas W. Powell‡
A Comparison Of Three Computer-Based Methods Used To Determine Emg Signal Amplitude, Doug Renshaw*, Matthew R. Bice†, Camille Cassidy‡, James A. Eldridge‡, Douglas W. Powell‡
International Journal of Exercise Science
Electromyography is a commonly used method to determine relative effort and neuromuscular drive to skeletal muscle. A limitation of the interpretation of EMG within the literature is the many methods used to determine the intensity of muscle activation. In the current study, ten healthy young adults performed a level walking task while EMG was recorded from the tibialis anterior, medial gastrocnemius and fibularis longus. The EMG data were rectified and smoothed using the root mean squared (RMS). Peak RMS (pRMS), mean RMS (mRMS) and integrated EMG (iEMG) were normalized to the peak value within the subject and were used to …
The Short-Term Effect Of Whole Body Vibration Training On Sprint Start In Collegiate Athletes, Brad Roberts*, Iain Hunter‡, Ty Hopkins‡, Brent Feland‡
The Short-Term Effect Of Whole Body Vibration Training On Sprint Start In Collegiate Athletes, Brad Roberts*, Iain Hunter‡, Ty Hopkins‡, Brent Feland‡
International Journal of Exercise Science
Whole body vibration (WBV) is characterized by a vibratory stimulus emitted throughout the body through the use of a vibrating platform on which the subject stands. Studies have shown over 30% increases in maximal explosive strength such as maximal speed biceps curl as well as increases in maximum dynamic force such as maximal sitting bench pull as the result of vibration. The purpose of this study was to investigate the effects of short term whole-body vibration on sprint starts among collegiate track athletes. On the first day eleven subjects were randomly assigned to either a non-vibration or vibration group for …
A Kinematic And Kinetic Case Study Of A Netball Shoulder Pass, Sharon A. Hetherington*, Sibella G. King*, Denis Visentin‡, Marie-Louise Bird‡
A Kinematic And Kinetic Case Study Of A Netball Shoulder Pass, Sharon A. Hetherington*, Sibella G. King*, Denis Visentin‡, Marie-Louise Bird‡
International Journal of Exercise Science
The majority of studies analysing netball skills using force platforms have focused on reducing the risk of injury from compression and torsion forces on the knee and ankle joints during landing and pivoting. In this preliminary case study our aim was to investigate the efficacy of a combination of tools to describe the kinematic and kinetic mechanisms underlying the netball shoulder pass. The segmental movements of the netball shoulder pass were analysed from video and force platform data in order to develop a suitable methodology for use in a larger study. Peak vertical ground reaction force of 850 N was …
The Effects Of Tempur Insoles On Ground Reaction Forces And Loading Rates In Running, Crystal Ruano*, Douglas Powell‡, Elizabeth T. Chalambaga*, Doug Renshaw*
The Effects Of Tempur Insoles On Ground Reaction Forces And Loading Rates In Running, Crystal Ruano*, Douglas Powell‡, Elizabeth T. Chalambaga*, Doug Renshaw*
International Journal of Exercise Science
Runners often experience over-use injuries. Ground reaction force (GRFs) patterns have been associated with these over-use injuries; however, it is not solely the magnitude of GRFs, but also the rate at which they are applied that lead to lower extremity injury. Many recreational runners will use over-the-counter insoles as a method of treating or preventing injury. Therefore, the purpose of this study was to examine the efficacy of two insoles on peak GRFs and loading rates. It was hypothesized that no differences in peak GRFs or loading rates would exist with the addition of two insoles during running. Twelve subjects …
Exercise Bouts At Three Different Intensities Fail To Potentiate Concentric Power, Chad A. Cabrera†, Jacobo Morales‡, Felicia Greer‡, Robert W. Pettitt‡
Exercise Bouts At Three Different Intensities Fail To Potentiate Concentric Power, Chad A. Cabrera†, Jacobo Morales‡, Felicia Greer‡, Robert W. Pettitt‡
International Journal of Exercise Science
Postactivation potentiation (PAP) has been hypothesized previously to occur during voluntary, concentric actions. We tested the hypothesis that one of at least three different intensities of conditioning exercises would evoke potentiation of power during the concentric, bench press throw (BPT). Twelve men (age = 22.9 &#; 2.7 years, bench press 1 repetition maximum (1RM) = 1.20 ± 0.12 kg•kg-1 body weight) completed five isotonic conditioning presses at ~55, 70, and 86% 1RM, in counterbalanced order, and on separate days. Average and peak power of the BPT using a load of 55% 1RM along with surface electromyography (EMG) of the triceps …
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part Ii, Eric J. Wilson*, David E. Sherwood‡
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part Ii, Eric J. Wilson*, David E. Sherwood‡
International Journal of Exercise Science
In Part I of this study, it was shown that performing a shorter distance aiming movement prior to a longer distance aiming movement resulted in overshooting of the short movement and undershooting of the longer movement compared to control conditions. However, the finding was limited, unexpectedly, to the nondominant hand. To replicate the prior result and to determine the effect of practice organization on movement accuracy, right-handed (n =24) participants (aged 18-22) produced a sequence of three rapid lever reversals combining short (20°) and long (60°) movements with an intermovement interval of 2.5 s with the dominant hand. Greater overshooting …
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part I, Eric J. Wilson, David E. Sherwood
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part I, Eric J. Wilson, David E. Sherwood
International Journal of Exercise Science
Prior work had shown that performing a shorter distance aiming movement prior to a longer distance aiming movement resulted in overshooting of the short movement and undershooting of the longer movement compared to repetition of the same movement. The main question was whether the same interference effects would be found in a three-movement sequence. Right-handed (N = 24) participants (aged 18-22) produced a sequence of two or three bimanual rapid lever reversals combining short (20°) and long (60°) movements with an intermovement interval of 2.5 s beginning with either the dominant or nondominant hand. Participants overshot the short target and …