Open Access. Powered by Scholars. Published by Universities.®
Health and Physical Education Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 8 of 8
Full-Text Articles in Health and Physical Education
Pressurized Device For Mitigating Atrophy In Soleus During Long-Duration Spaceflight, Ramona Tovar Briones, Kimhab Sor, Breandrea Diaz, Dona Varghese, Benjamin Easter, Hunter Alvis, Brandon R. Rigby
Pressurized Device For Mitigating Atrophy In Soleus During Long-Duration Spaceflight, Ramona Tovar Briones, Kimhab Sor, Breandrea Diaz, Dona Varghese, Benjamin Easter, Hunter Alvis, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
A major concern with long duration spaceflight, skeletal muscle atrophy is most detrimental in lower limb musculature, particularly in muscles critical for proper gait, such as the soleus. The decline of muscle activation and the suppression of sensory input from plantar sole mechanoreceptors can add to the attenuation of skeletal muscle health during spaceflight. More specifically, inhibition of sensory input from sole receptors, such as with gravitational unloading, decreases selective activation, thereby negatively affecting muscle tone and inevitably resulting in lower limb atrophy. PURPOSE: To design, fabricate, and test a specialized boot with an insole that applies oscillating pneumatic …
Electromyographic Activation Of The Quadriceps During The Concentric Phase Of The Squat, Kase Pennartz, Dakota Harris, Calvin Smith, Lyric Richardson, Micheal Luera
Electromyographic Activation Of The Quadriceps During The Concentric Phase Of The Squat, Kase Pennartz, Dakota Harris, Calvin Smith, Lyric Richardson, Micheal Luera
International Journal of Exercise Science: Conference Proceedings
Mechanical muscle properties such as length-tension relationship in conjunction with electromyography (EMG) allow greater insight into the overall motor coordination. The different morphologies of the quadriceps and their force generating capacities can be quantified through the differences in EMG amplitude. PURPOSE: To examine quadriceps activation during the squat exercise under various intensities. METHODS: Eleven participants (age 18-35; height: 181.1 ± 8.9cm; weight: 97.7 ± 19.1kg) were recruited for this study. Subjects completed three visits, one familiarization and two testing days separated by 48 hours. Ultrasound images were obtained from the three primary leg extensor muscles (vastus lateralis (VL), …
Electromyographic Comparison Between The Rear-Foot-Elevated Vs. B-Stance Unilateral Back Squat Techniques, Sarah Pearce, Jennifer Rivera, Minhyuk Kwon, Whitney Leyva, Edward Jo
Electromyographic Comparison Between The Rear-Foot-Elevated Vs. B-Stance Unilateral Back Squat Techniques, Sarah Pearce, Jennifer Rivera, Minhyuk Kwon, Whitney Leyva, Edward Jo
International Journal of Exercise Science: Conference Proceedings
The Rear-Foot-Elevated back squat (RFE) and B-Stance (BS) are two unilateral back squat techniques with the latter commonly proposed as the more stable of the two. There is currently a lack of research comparing these two techniques with respect to neuromuscular demand and movement characteristics. PURPOSE: The purpose of this study was to examine the muscle activation differences via surface electromyography (EMG) between the RFE vs. BS unilateral back squat techniques with equated load. METHODS: Thirteen healthy college-aged, resistance-trained male (n=10) and female (n=3) subjects were recruited for this study. Subjects visited the laboratory on two occasions separated …
Snapping Triceps Syndrome: A Rare Cause Of Medial Elbow Pain, Dale Bongbong, Kevin Gilbert Ms, Kenneth Vitale Md, Fascm, Jennifer Tram Md
Snapping Triceps Syndrome: A Rare Cause Of Medial Elbow Pain, Dale Bongbong, Kevin Gilbert Ms, Kenneth Vitale Md, Fascm, Jennifer Tram Md
International Journal of Exercise Science: Conference Proceedings
PURPOSE: Snapping medial triceps is a relatively rare cause of medial elbow pain that occurs when the tricep tendon dislocates over the medial or lateral epicondyle. Physical exams usually demonstrate intermittent medial elbow pain with extreme elbow flexion or extension, however dynamic diagnostic studies allow for direct visualization of the dislocating tricep. This case report adds to the sparse literature on snapping medial triceps. METHODS: We report a rare occurrence of snapping medial triceps in a young female who initially presented with pain at the posteromedial right elbow with extreme flexion and extension. Intermittent snapping of the medial elbow was …
Electromyographic Analysis Of The Vastus Lateralis And Vastus Medialis Muscles Among Different Crank Lengths In Cycling, Jackson C. Crovella, Karoline M. Wucherer, Joy He, Christiane R. O'Hara
Electromyographic Analysis Of The Vastus Lateralis And Vastus Medialis Muscles Among Different Crank Lengths In Cycling, Jackson C. Crovella, Karoline M. Wucherer, Joy He, Christiane R. O'Hara
International Journal of Exercise Science: Conference Proceedings
Crank length (CL) on a bicycle may influence the total activation and period of activation of the leg muscles. Differences in total muscular activation suggest that CL may alter muscular fatigue. Differences in muscular onset and offset suggest that CL may shift muscle activation periods across a 360 degree crank cycle. PURPOSE: To examine the effects of four different CL (155, 165, 175, and 185 mm) on muscular activation of vastus lateralis (VL) and vastus medialis (VM). METHODS: Nine non-cyclists (6M, 3F, aged 18-55) participated in a single blind randomized cross-over experiment with four CL. Delsys EMG sensors …
Electromyographic Examination Of Hip And Knee Extension Hex Bar Exercises Varied By Starting Knee And Torso Angles, Meghan Mccauley, Jennifer Rivera, Whitney D. Leyva, Kalin A. Tomlinson, Kevin A. Valenzuela, Elisabeth Zeitz, Edward Jo Dr.
Electromyographic Examination Of Hip And Knee Extension Hex Bar Exercises Varied By Starting Knee And Torso Angles, Meghan Mccauley, Jennifer Rivera, Whitney D. Leyva, Kalin A. Tomlinson, Kevin A. Valenzuela, Elisabeth Zeitz, Edward Jo Dr.
International Journal of Exercise Science: Conference Proceedings
Variations of the deadlift can be executed using the hexagonal (hex) bar by altering, for instance, the knee and torso angles while maintaining a constant hip angle at the start position. PURPOSE: To examine muscle activation patterns of the biceps femoris, rectus femoris, and erector spinae during three deadlift variations using the hex bar. METHODS: Twenty resistance-trained male and female subjects performed hex bar deadlift variations in three different starting knee flexion positions: 128.4 ± 8.5° (elevated Romanian Deadlift), 111.9 ± 8.7° (conventional elevated deadlift), and 98.3 ± 6.5° (conventional hexagonal bar deadlift). Subjects performed three repetitions at …
Examining The Effect Of Partial-Range Of Motion Bench Press Exercise On Metabolic Work, Regional Myoelectrical Amplitude, And Local Muscle Hyperemia: A Pilot Study., Jacob D. Fanno, Ian Powell, Cole Hambric, Daniel Newmire
Examining The Effect Of Partial-Range Of Motion Bench Press Exercise On Metabolic Work, Regional Myoelectrical Amplitude, And Local Muscle Hyperemia: A Pilot Study., Jacob D. Fanno, Ian Powell, Cole Hambric, Daniel Newmire
International Journal of Exercise Science: Conference Proceedings
Traditionally, it is recommended to utilize a full-range of motion (fROM) during resistance training; however, recent data has found that using a partial-range of motion (pROM) may elicit similar hypertrophy and strength gains. Further research is required to assess the acute physiological differences of pROM in comparison to traditional fROM during a resistance exercise bout. PURPOSE: The purpose of this pilot study is to observe the metabolic work, myoelectrical amplitude, and muscle hyperemia during and following bouts of both flat and incline barbell bench press exercises with differing ranges of motion. METHODS: One male subject (21.6y; 168cm; 83kg; …
The Effects Of Two Post-Activation Potentiation Methods On Muscular Activation, Ileana A. Jarquin, Samuel Montalvo, Daniel Conde, Gabriel Ibarra-Mejia, Sandor Dorgo
The Effects Of Two Post-Activation Potentiation Methods On Muscular Activation, Ileana A. Jarquin, Samuel Montalvo, Daniel Conde, Gabriel Ibarra-Mejia, Sandor Dorgo
International Journal of Exercise Science: Conference Proceedings
Post Activation Potentiation (PAP) is an exercise concept based on utilizing a maximal voluntary contraction of the muscles at task to potentiate a dynamic muscular contraction of the same muscles. It is well established that PAP is modulated between performance readiness and muscular fatigue. Heart Rate percentage (HR%) has been used as an indicator of performance readiness and muscular fatigue. PURPOSE: To examine different muscular activation (μV) in response to two different PAP protocols during the vertical jump exercise. METHODS: 8 participants (5 males and 3 females; mean ± SD: Age = 22.6 ± 1.76 years; Height …