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Full-Text Articles in Kinesiology
Effects Of Changing The Focus Of Attention On Accuracy, Acceleration, And Electromyography In Dart Throwing, Dakota R. Hitchcock, David E. Sherwood
Effects Of Changing The Focus Of Attention On Accuracy, Acceleration, And Electromyography In Dart Throwing, Dakota R. Hitchcock, David E. Sherwood
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 1120-1135, 2018. Research over the past 15 years or so has shown that an external focus on the effects of one’s movements improves performance relative to an internal focus of attention on bodily actions. More recent research has attempted to discover how the focus of attention (FOA) influences underlying motor control processes by using kinematic and EMG measures. Research has shown that an external FOA reduces EMG activity and the co-contraction between agonist and antagonist muscle groups relative to an internal FOA. The primary goal of the current study was to determine how the …
The Effect Of Active Ankle T1tm Ankle Braces On The Timing Of Muscular Activation In The Leg In Female Varsity Volleyball Players: A Pilot Study, Kylee Kuchta, Sara Potter, Heather Brousseau, Ian Newhouse
The Effect Of Active Ankle T1tm Ankle Braces On The Timing Of Muscular Activation In The Leg In Female Varsity Volleyball Players: A Pilot Study, Kylee Kuchta, Sara Potter, Heather Brousseau, Ian Newhouse
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 1086-1095, 2018. The objective was to examine the effect of Active Ankle T1TM ankle braces on the timing of muscular activation of the upper leg in female volleyball athletes during a one-legged landing task. Fourteen healthy female varsity volleyball athletes participated in this study. Each signed a participant recruitment form, consent form, a Physical Activities Readiness Questionnaire (PAR-Q) and completed the injury screening form. A warm up was completed followed by two practice jumps. Each participant was randomly assigned and counterbalanced to a condition to begin with (no brace or brace). Once the …
Concurrent Validity Of The Virtusense® Gait Analysis System For The Quantification Of Spatial And Temporal Parameters Of Gait, Andrew J. Strubhar, Patrick Tan, Laura Storage, Melissa Peterson
Concurrent Validity Of The Virtusense® Gait Analysis System For The Quantification Of Spatial And Temporal Parameters Of Gait, Andrew J. Strubhar, Patrick Tan, Laura Storage, Melissa Peterson
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 934-940, 2018. The VirtuSenseⓇ (VS) is a new single camera 3D movement-capturing device that has gait analysis capabilities in its arsenal of functional programs. The Gait Analysis System with the VS has not been formally validated. The purpose of the study was to assess the concurrent validity of the VirtuSenseⓇ (VS) Gait Analysis System by comparing it to two standards, the GAITRiteⓇ (GR) computerized gait mat and manual pedograph (PG). Twenty-seven healthy, young adults performed 4 walking trials at a self-selected pace on a level surface. In 3 trials, stride length, …
Strength And Stability Analysis Of Rehabilitated Anterior Cruciate Ligament Individuals, Jeffrey J. Cervenka, Meredith Decker, Mark D. Ricard, Joshua Beaty, Logan Ruhde
Strength And Stability Analysis Of Rehabilitated Anterior Cruciate Ligament Individuals, Jeffrey J. Cervenka, Meredith Decker, Mark D. Ricard, Joshua Beaty, Logan Ruhde
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 817-826, 2018.The anterior cruciate ligament (ACL) serves as a vital stabilizer for the human knee, yet it is one of the most injured ligaments in the body. Function of the knee is restored through reconstruction and physical therapy, but long term functional deficits persist in some individuals. To better understand the influence of post rehabilitation outcomes on dynamic balance performance, this study evaluated bilateral differences in strength and stability in 11 participants who have rehabilitated from an ACL reconstruction or repair. The Y-Balance Test and an isokinetic strength assessment using the Biodex dynamometer …
The Effect Of Stance Width And Anthropometrics On Joint Range Of Motion In The Lower Extremities During A Back Squat, Eric Demers, Jonathan Pendenza, Valentin Radevich, Richard Preuss
The Effect Of Stance Width And Anthropometrics On Joint Range Of Motion In The Lower Extremities During A Back Squat, Eric Demers, Jonathan Pendenza, Valentin Radevich, Richard Preuss
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 764-775, 2018. The purpose of this study was to assess whether changing the stance width has an effect on the range of motion of hip flexion, knee flexion, and ankle dorsiflexion during an unloaded back squat, and whether these joint movements are affected by anthropometric differences. Thirty-two healthy, young adults performed unloaded back squats at three different stance widths, normalized to pelvic width. Joint angles were assessed using electromagnetic motion capture sensors on the sacrum, and thigh, shank and foot of the dominant leg. ANOVA comparison of joint angles for the three stance widths, …
Peak Power Output In Loaded Jump Squat Exercise Is Affected By Set Structure, Nikolaj Koefoed, Mads Lerche, Bjørn K. Jensen, Pia Kjær, Sebastian Dam, Rasmus Horslev, Ernst A. Hansen
Peak Power Output In Loaded Jump Squat Exercise Is Affected By Set Structure, Nikolaj Koefoed, Mads Lerche, Bjørn K. Jensen, Pia Kjær, Sebastian Dam, Rasmus Horslev, Ernst A. Hansen
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 776-784, 2018. A priority in strength and power exercise might be to train with as high quality as possible for the shortest possible duration. In this context, peak power output could reflect quality. Designing an exercise session as a cluster set structure, as compared to a traditional set structure, may be a way to obtain higher peak power output in the session. But it is unknown whether that is obtainable for non-elite individuals performing loaded jump squat exercise. The aim of the present study was therefore to test the hypothesis that peak power output …
Lower Extremity Joint Kinematics Of Shod, Barefoot And Simulated Barefoot Treadmill Running, Michele Leblanc, Heidi E. Ferkranus
Lower Extremity Joint Kinematics Of Shod, Barefoot And Simulated Barefoot Treadmill Running, Michele Leblanc, Heidi E. Ferkranus
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 717-729, 2018. Barefoot running is considered to decrease injury risk, but is not always practical, particularly while running on a fitness center treadmill. The purpose of this study was to compare the kinematics of shod, barefoot, and simulated barefoot running. Twelve subjects (age = 21.1 ± 1.2 years) who regularly run on a treadmill for fitness participated in the study. After a warm up, each runner ran on a Biodex RTM 400 treadmill set at 7.4 mph (approximately 3.3 m/s) in their own shoes, barefoot, and while running “like they were barefoot” in their …
Stability Of Resistance Training Implement Alters Emg Activity During The Overhead Press, Jeremy R. Dicus, Michael E. Holmstrup, Kyle Shuler, Tyler Rice, Shawn Raybuck, Chelsea Siddons
Stability Of Resistance Training Implement Alters Emg Activity During The Overhead Press, Jeremy R. Dicus, Michael E. Holmstrup, Kyle Shuler, Tyler Rice, Shawn Raybuck, Chelsea Siddons
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 708-716, 2018. Kettlebells often replace dumbbells during common resistance training exercises such as the overhead press. When performing an overhead press, the center of mass of a dumbbell is in line with the glenohumeral joint. In comparison, the center of mass of the kettlebell is posterior to the glenohumeral joint. Posterior displacement of the kettlebell center of mass may result in less stability during the pressing motion. The purpose of this study was to examine muscle activity during an overhead press with resistance training implements of differing stability. Surface electromyography (EMG) for the anterior …
The Influence Of Body Armor On Balance And Movement Quality, Roger O. Kollock Jr, Davis Hale, Rachele E. Vogelpohl, Logan Kremer, Christian Cox, Josh Horner, Matt Allen
The Influence Of Body Armor On Balance And Movement Quality, Roger O. Kollock Jr, Davis Hale, Rachele E. Vogelpohl, Logan Kremer, Christian Cox, Josh Horner, Matt Allen
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 648-656, 2018. Body armor is essential to the protection of military personnel; however, body armor may impede the users balance and movement quality. A better understanding of the influence of body armor on balance and movement quality may help in the development of new guidelines for training standards and procedures to mitigate the risk of injury associated with wearing of body armor in warfighters. The purpose of this study was to identify the effects of body armor (combat boots, tactical vest and combat helmet) on balance and movement quality in male military cadets and …
Intraindividual Variability And Validity In Smart Apparel Muscle Activity Measurements During Exercise In Men, Jonathan Aquino, Jenevieve L. Roper
Intraindividual Variability And Validity In Smart Apparel Muscle Activity Measurements During Exercise In Men, Jonathan Aquino, Jenevieve L. Roper
International Journal of Exercise Science
International Journal of Exercise Science 11(7): 516-525, 2018. The purpose of the study was to compare smart apparel (SA) muscle activity measurements to surface electromyography (sEMG) muscle activity measurements during exercise, and determine if any systematic bias of the apparel exists. Thirty-five male participants (Ages 23.1±2.92 yrs, height 178±0.09 cm, mass 81.14±10.59 kg, body fat percentage 15.4±4.79%) provided informed consent for participation. During two separate exercise sessions, participants performed three sets of 12 bodyweight squats and pushups in both SA and sEMG. Conditions (sEMG or SA) were randomly counterbalanced. During sEMG, sensors were placed at selected anatomical locations on the …
Impact Of Occupational Footwear And Workload On Lower Extremity Muscular Exertion, Alana J. Turner, Jonathan C. Swain, Katherine L. Mcwhirter, Adam C. Knight, Daniel W. Carruth, Harish Chander
Impact Of Occupational Footwear And Workload On Lower Extremity Muscular Exertion, Alana J. Turner, Jonathan C. Swain, Katherine L. Mcwhirter, Adam C. Knight, Daniel W. Carruth, Harish Chander
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 331-341, 2018. Footwear worn and workload performed can influence muscular exertion, which is critical in occupational environments. The purpose of the study was to assess the impact of two occupational footwear, steel-toed (SWB) and tactical (TWB) work boots, on muscular exertion when exposed to a physical workload. Eighteen healthy male participants (age: 21.27 ± 1.7 years; height: 177.67 ± 6.0 cm; mass: 87.95 ± 13.8 kg) were tested for maximal voluntary isometric contraction (MVIC) using electromyography (EMG) and pressure pain threshold (PPT) using an algometer for four lower extremity muscles prior to (pre-test) and …
Thirty-Year Trends Of Study Design And Statistics In Applied Sports And Exercise Biomechanics Research, George Vagenas, Dimitria Palaiothodorou, Duane Knudson
Thirty-Year Trends Of Study Design And Statistics In Applied Sports And Exercise Biomechanics Research, George Vagenas, Dimitria Palaiothodorou, Duane Knudson
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 239-259, 2018. This study documented the change in study design and statistics employed in applied sports and exercise biomechanics research from 1985 to 2014. The sample comprised 676 data based original research reports published in the Journal of Applied Biomechanics (JAB) from 1985 to 2014. Eight design and 10 statistical criteria were extracted from each study. Descriptive statistics were calculated and change in study criteria over time were documented. Design criteria that did not change over time, remaining at relatively low levels of rigor, were widespread (71%) use of small (2-20) sample sizes and …
Comparison Of Varying Heel To Toe Differences And Cushion To Barefoot Running In Novice Minimalist Runners, Daniel C. Moody, Iain Hunter, William J. Myrer
Comparison Of Varying Heel To Toe Differences And Cushion To Barefoot Running In Novice Minimalist Runners, Daniel C. Moody, Iain Hunter, William J. Myrer
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 13-19, 2018. There are many different types of footwear available for runners in today’s market. Many of these shoes claim to help runners run more efficiently by altering an individual’s stride mechanics. Minimalist footwear claims to aid runners run more on their forefeet whereas more traditional footwear provides more cushioning specifically for a heel first landing. The purpose of this paper was to determine if runners, who were accustomed to running in traditional footwear would alter their running mechanics while running acutely in various types of minimalist footwear. Twelve subjects, accustomed to running in …
Dynamic Stability In Gymnasts, Non-Balance Athletes, And Active Controls, Hope Sloanhoffer, Kathryn Harrison, Jean L. Mccrory Phd
Dynamic Stability In Gymnasts, Non-Balance Athletes, And Active Controls, Hope Sloanhoffer, Kathryn Harrison, Jean L. Mccrory Phd
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 1-12, 2018. Gymnastics by nature is a balance sport requiring both static and dynamic stability. To our knowledge, the center of pressure (COP) movement of collegiate gymnasts has not been compared to other collegiate athletes and healthy controls during static and dynamic postural stability tasks. Our purpose was to investigate static and dynamic stability in collegiate gymnasts, non-gymnast athletes and non-athlete controls. Data were collected on female university gymnasts (n=10), university athletes in other sports (n=10), and active non-athlete controls (n=10). Static balance was measured using a commercially available six-condition static test and dynamic …