Experimental Case Study with a Modified Ski Boot: Does the Spoiler Design Influence Muscle Activity and Kinematics During Landing?

2009 ◽  
pp. 63-63-18 ◽  
Author(s):  
V Senner ◽  
P Schaff
Keyword(s):  
Muscle Activity

scholarly journals Clinical Use of Surface Electromyography to Track Acute Upper Extremity Muscle Recovery after Stroke: A Descriptive Case Study of a Single Patient

2021 ◽  
Vol 4 (2) ◽  
pp. 32
Author(s):  
Heather A. Feldner ◽  
Christina Papazian ◽  
Keshia M. Peters ◽  
Claire J. Creutzfeldt ◽  
Katherine M. Steele
Keyword(s):  
Muscle Activity ◽  
Surface Electromyography ◽  
Inpatient Rehabilitation ◽  
Stroke Survivor ◽  
Structured Interview ◽  
Routine Care ◽  
Stroke Recovery ◽  
Descriptive Case Study ◽  
Sensing Technology

Arm recovery varies greatly among stroke survivors. Wearable surface electromyography (sEMG) sensors have been used to track recovery in research; however, sEMG is rarely used within acute and subacute clinical settings. The purpose of this case study was to describe the use of wireless sEMG sensors to examine changes in muscle activity during acute and subacute phases of stroke recovery, and understand the participant’s perceptions of sEMG monitoring. Beginning three days post-stroke, one stroke survivor wore five wireless sEMG sensors on his involved arm for three to four hours, every one to three days. Muscle activity was tracked during routine care in the acute setting through discharge from inpatient rehabilitation. Three- and eight-month follow-up sessions were completed in the community. Activity logs were completed each session, and a semi-structured interview occurred at the final session. The longitudinal monitoring of muscle and movement recovery in the clinic and community was feasible using sEMG sensors. The participant and medical team felt monitoring was unobtrusive, interesting, and motivating for recovery, but desired greater in-session feedback to inform rehabilitation. While barriers in equipment and signal quality still exist, capitalizing on wearable sensing technology in the clinic holds promise for enabling personalized stroke recovery.

Trunk muscle activity and acceleration of the spine during partial-body vibration in a sitting position—a single case study

Physiotherapy ◽  
2015 ◽  
Vol 101 ◽  
pp. e347 ◽  
Author(s):  
P. Eichelberger ◽  
R. Fankhauser ◽  
R. Geering ◽  
L. Radlinger ◽  
S. Rogan
Keyword(s):  
Muscle Activity ◽  
Single Case ◽  
Trunk Muscle ◽  
Sitting Position ◽  
Single Case Study ◽  
Body Vibration ◽  
Partial Body

scholarly journals Muscle Activity and Morphology in Slalom Skiing by a Single-Leg Amputee Ski Racer: A Case Study of a Paralympic Athlete

2021 ◽  
pp. 500-5007
Author(s):  
Yusuke Ishige ◽  
Shinsuke Yoshioka ◽  
Noriko Hakamada ◽  
Yuki Inaba
Keyword(s):  
Muscle Activity ◽  
Elite Athlete ◽  
Vastus Lateralis ◽  
Biceps Femoris ◽  
Cross Sectional ◽  
Measurement Units ◽  
The Mean ◽  
The Right ◽  
The Relationship

The aim of this study was to clarify the characteristics of skiing by a single-leg amputee ski racer from the viewpoints of muscle activity, morphology, and the relationship between both elements through comparisons with those of a non-disabled ski racer. One elite athlete, classified as LW2 (left thigh amputation), and one non-disabled athlete, as a control, participated in this study. The cross-sectional area of thigh muscles was measured through magnetic resonance imaging. Additionally, muscle activities and joint and segment kinematics during slalom skiing were measured using electromyography and inertial measurement units, respectively. The muscle activities and joint kinematics of the amputee racer in the turn in which he performed with the inside edge of the ski were similar to those of the outside leg of the non-disabled racer over a turn. In contrast, at the turn in which the amputee racer performed with the outside edge (more difficult side), the amputee racer largely activated the biceps femoris (BF) in the first half of the turn compared to the non-disabled racer. The reason could be to control the angular momentum of the trunk during the forward tilting motion. This is because a greater activity of the BF was observed during the period in which the forward tilt of the trunk was increased, and the mean activity of the BF was the greatest during the first half of the right turn in which the range of the motion of the forward tilt was the greatest. In terms of muscle morphology of the amputee racer, a significant hypertrophy of the BF and vastus lateralis was observed compared to the non-disabled racers. The well-developed BF was considered to be related to the large activity during the turn performed with the outside edge of the ski.

scholarly journals Analýza balancování stoje na rukou

2013 ◽  
Vol 7 (1) ◽  
pp. 51-62
Author(s):  
Petr Hedbávný ◽  
Dušan Hupka ◽  
Jana Sklenaříková
Keyword(s):  
Hip Joint ◽  
Muscle Activity ◽  
Equilibrium Position ◽  
Physical Structure ◽  
Comprehensive Analysis ◽  
Support Surface ◽  
Muscle Groups ◽  
Fundamental Physical ◽  
Knowledge In Practice

The research was focused on analyzing balancing in handstand, as one of the fundamental physical structure sports gymnastics. With this research dealt many authors, but without application in practice.Its specificity is determined from the mechanical point of gravity height, the size of the support surface and the overall equilibrium position in which maintain stability. The aim of the project was to optimize the training of standing on their hands, depending on the strategy of maintaining a balance in this unstable static physical structure. For a comprehensive analysis of handstands is utilized synchronized 3D kinematic analysis, stabilomathric measuring and EMG, which we were reveal the inner essence of outer performance of technique. It was a case study and the tested person was a gymnast of student category and we focused on changes in the angle of the hip joint ("shoulder - hip - knee") and shoulder joint ("wrist - shoulder - hip") in connection with the muscle activity observed muscles and muscle groups. Now the application of this knowledge in practice, we can optimize the training, which in some cases lengthy.

Physiological Effect on Different Reach Distances: A Case Study for Malaysia Adults

2012 ◽  
pp. 77-93
Author(s):  
S.Z. Dawal ◽  
S.J. Sartika ◽  
H.R. Zadry ◽  
Y. San ◽  
S.N. Makhtar ◽  
...  
Keyword(s):  
Heart Rate ◽  
Back Pain ◽  
Oxygen Uptake ◽  
Muscle Activity ◽  
Physiological Responses ◽  
Physiological Effect ◽  
Repetitive Lifting ◽  
Anterior Deltoid ◽  
Lifting Task

The effects of oxygen uptake, heart rate and muscle activity while performing a repetitive lifting task in normal, maximum and extreme reach distances were investigated in the study. Ten subjects (5 females and 5 males) of age between 22-25 years were involved in the study. The results of oxygen uptake showed an increased of 11% and 39% from normal reach to maximum and extreme reach respectively. As for heart rate the results showed an increased of 8% and 17% from normal reach to maximum and extreme reach respectively. Electromyogram reading of anterior deltoid and upper trapezious muscles showed a tremendous increased of more than 80% while bicep brachii muscles showed an increase of only about 1 % from normal reach. The findings from the study showed an increased in the physiological responses when the work reach distance was increased. And lifting task, posture and load on this study developed back pain. Kesan pengambilan oksigen, kadar degupan jantung dan aktiviti otot ketika melaksanakan kerja mangangkat secara berulang pada kadar normal, maximum dan capaian melampau telah dikaji dalam kajian ini. Sepuluh orang peserta kajian, lima perempuan dan lima lelaki yang berumur antara 22-25 tahun terlibat dalam kajian ini. Keputusan kajian terhadap pengambilan oksigen menunjukkan kadar peningkatan sebanyak 11% dan 39% dari kadar normal untuk mencapai kadar maximum dan capaian melampau. Manakala untuk kadar degupan jantung keputusan menunjukkan peningkatan sebanyak 8% dan 17% dari keadaan normal untuk mencapai kadar maximum dan capaian melampau. Bacaan electromyogram pada anterior deltoid dan otot bahagian atas trapezious menunjukkan peningkatan yang besar iaitu sebanyak 80% manakala otot bicep brachii menunjukkan peningkatan sebanyak 1% sahaja dari keadaan normal. Penemuan dalam kajian ini menunjukkan peningkatan dalam tindak balas psikologikal apabila jarak capaian kerja meningkat. Dan pekerjaan mengangkat, postur dan beban dalam kajian ini mengakibatkan sakit belakang badan

Sign in / Sign up

Export Citation Format

Share Document