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Full-Text Articles in Life Sciences
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 …
Asymmetry Of Force Fluctuation During Low Intensity Isometric Contraction In Leg Muscle, Kazushige Oshita†, Sumio Yano‡
Asymmetry Of Force Fluctuation During Low Intensity Isometric Contraction In Leg Muscle, Kazushige Oshita†, Sumio Yano‡
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 68-77, 2010. The purpose of this study was to investigate the asymmetry of force fluctuation in the leg muscles during isometric knee extension and flexion. Twenty healthy males (21±2 years) performed the maximal voluntary isometric contraction (MVC) in knee extensor and flexor. On the basis of MVC measurement, the subjects performed sustained isometric knee extension and flexion for 15s at levels corresponding to 10%, 20% and 30% MVC. The main findings of this study were: (1) a greater force fluctuation was found in the stronger MVC limb than in the weaker MVC limb at …
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 …