scholarly journals Asymmetrical fatiguing of the gluteus maximus muscles in the elite short-track female skaters.

2020 ◽  
Author(s):  
Mariusz Konieczny ◽  
Paweł Pakosz ◽  
Mateusz Witkowski
Keyword(s):  
Repeated Measures ◽  
Gluteus Maximus ◽  
Signal Frequency ◽  
Control Group ◽  
National Team ◽  
Leg Muscles ◽  
Muscle Work ◽  
Risk Of Injury ◽  
Gluteus Maximus Muscle ◽  
The Right

Abstract Background According to research, fast skating on short distances increases functional asymmetry of leg muscles. As has been proven in many sporting disciplines, this asymmetry can increase the risk of injury. The aim of the study was to analyze the level of right and left fatigue asymmetry of gluteus maximus muscle in elite skaters on a short track and to compare this phenomenon to a control group. The muscles were chosen deliberately, due to their influence in maintaining the right position during training on ice.Methods The experiment compared a group of eight members of the Polish Women’s National Team in short track with a group of eight non-training people. The subjects did the Biering-Sorensen test, in which sEMG (surface electromyography) signal frequency was measured in the gluteus maximus muscles during an isometric contraction. Fatigue slopes were analyzed with a ANOVA with repeated measures. In the skaters, the fatigue differed between the right and the left gluteus maximus muscles. All the skaters had higher fatigue in the right leg. This phenomenon was not observed in the non-training subjects, who on average had similar fatigue in both legs. Results Results showed that the right and the left muscles of the skaters in the experimental group differed in fatigue, but this difference was non-significant in the control group.The subjects from the two groups did not differ in the fatigue of the left muscle, they did in the fatigue of the right muscle. The elite speed-track skaters had higher fatigue in the right muscle than the non-training subjects.Conclusions Training should thus be planned in a way that minimizes the risk of causing muscle fatigue asymmetry in skaters despite the typically asymmetrical muscle work during training on ice and competition, thus new training protocols should be developed or considered to decrease that asymmetry.Trial registration The tests were previously approved by the Bioethical Commission of the Chamber of Physicians in Opole. (Resolution No. 235 of 13 December 2016).

scholarly journals Asymmetrical fatiguing of the gluteus maximus muscles in the elite short-track female skaters.

2020 ◽  
Author(s):  
Mariusz Konieczny ◽  
Paweł Pakosz ◽  
Mateusz Witkowski
Keyword(s):  
Repeated Measures ◽  
Gluteus Maximus ◽  
Signal Frequency ◽  
Control Group ◽  
National Team ◽  
Leg Muscles ◽  
Muscle Work ◽  
Risk Of Injury ◽  
Gluteus Maximus Muscle ◽  
The Right

Abstract Background According to research, fast skating on short distances increases functional asymmetry of leg muscles. As has been proven in many sporting disciplines, this asymmetry can increase the risk of injury. The aim of the study was to analyze the level of right and left myolectrical manifestations of fatigue asymmetry of gluteus maximus muscle in elite skaters on a short track and to compare this phenomenon to a control group. The muscles were chosen deliberately, due to their influence in maintaining the right position during training on ice.Methods The experiment compared a group of eight members of the Polish Women’s National Team in short track with a group of eight non-training people. The subjects did the Biering-Sorensen test, in which sEMG (surface electromyography) signal frequency was measured in the gluteus maximus muscles during an isometric contraction. Myolectrical manifestations of fatigue slopes were analyzed with a ANOVA with repeated measures. In the skaters, the myolectrical manifestations of fatigue differed between the right and the left gluteus maximus muscles. All the skaters had higher myolectrical manifestations of fatigue in the right leg. This phenomenon was not observed in the non-training subjects, who on average had similar myolectrical manifestations of fatigue in both legs. Results Results showed that the right and the left muscles of the skaters in the experimental group differed in myolectrical manifestations of fatigue, but this difference was non-significant in the control group.The subjects from the two groups did not differ in the myolectrical manifestations of fatigue of the left muscle, they did in the myolectrical manifestations of fatigue of the right muscle. The elite speed-track skaters had higher myolectrical manifestations of fatigue in the right muscle than the non-training subjects.Conclusions Training should thus be planned in a way that minimizes the risk of causing muscle myolectrical manifestations of fatigue asymmetry in skaters despite the typically asymmetrical muscle work during training on ice and competition, thus new training protocols should be developed or considered to decrease that asymmetry.Trial registration The tests were previously approved by the Bioethical Commission of the Chamber of Physicians in Opole. (Resolution No. 235 of 13 December 2016).

scholarly journals Asymmetrical fatiguing of the gluteus maximus muscles in the elite short-track female skaters.

2020 ◽  
Author(s):  
Mariusz Konieczny ◽  
Paweł Pakosz ◽  
Mateusz Witkowski
Keyword(s):  
Repeated Measures ◽  
Gluteus Maximus ◽  
Signal Frequency ◽  
Control Group ◽  
National Team ◽  
Leg Muscles ◽  
Muscle Work ◽  
Risk Of Injury ◽  
Gluteus Maximus Muscle ◽  
The Right

Abstract Background According to research, fast skating on short distances increases functional asymmetry of leg muscles. As has been proven in many sporting disciplines, this asymmetry can increase the risk of injury. The aim of the study was to analyze the level of right and left fatigue asymmetry of gluteus maximus muscle in elite skaters on a short track and to compare this phenomenon to a control group. The muscles were chosen deliberately, due to their influence in maintaining the right position during training on ice. Methods The experiment compared a group of eight members of the Polish Women’s National Team in short track with a group of eight non-training people. The subjects did the Biering-Sorensen test, in which sEMG (surface electromyography) signal frequency was measured in the gluteus maximus muscles during an isometric contraction. Fatigue slopes were analyzed with a ANOVA with repeated measures. In the skaters, the fatigue differed between the right and the left gluteus maximus muscles. All the skaters had higher fatigue in the right leg. This phenomenon was not observed in the non-training subjects, who on average had similar fatigue in both legs. Results Results showed that the right and the left muscles of the skaters in the experimental group differed in fatigue, but this difference was non-significant in the control group. The subjects from the two groups did not differ in the fatigue of the left muscle, they did in the fatigue of the right muscle. The elite speed-track skaters had higher fatigue in the right muscle than the non-training subjects. Conclusions Training should thus be planned in a way that minimizes the risk of causing muscle fatigue asymmetry in skaters despite the typically asymmetrical muscle work during training on ice and competition, thus new training protocols should be developed or considered to decrease that asymmetry. Trial registration The tests were previously approved by the Bioethical Commission of the Chamber of Physicians in Opole. (Resolution No. 235 of 13 December 2016).

scholarly journals Asymmetrical fatiguing of the gluteus maximus muscles in the elite short-track female skaters.

2020 ◽  
Author(s):  
Mariusz Konieczny ◽  
Paweł Pakosz ◽  
Mateusz Witkowski
Keyword(s):  
Repeated Measures ◽  
Gluteus Maximus ◽  
Signal Frequency ◽  
Control Group ◽  
National Team ◽  
Leg Muscles ◽  
Muscle Work ◽  
Risk Of Injury ◽  
Gluteus Maximus Muscle ◽  
The Right

Abstract Background According to research, fast skating on short distances increases functional asymmetry of leg muscles. As has been proven in many sporting disciplines, this asymmetry can increase the risk of injury. The aim of the study was to analyze the level of right and left myolectrical manifestations of fatigue asymmetry of gluteus maximus muscle in elite skaters on a short track and to compare this phenomenon to a control group. The muscles were chosen deliberately, due to their influence in maintaining the right position during training on ice.Methods The experiment compared a group of eight members of the Polish Women’s National Team in short track with a group of eight non-training people. The subjects did the Biering-Sorensen test, in which sEMG (surface electromyography) signal frequency was measured in the gluteus maximus muscles during an isometric contraction. Myolectrical manifestations of fatigue slopes were analyzed with a ANOVA with repeated measures. In the skaters, the myolectrical manifestations of fatigue differed between the right and the left gluteus maximus muscles. All the skaters had higher myolectrical manifestations of fatigue in the right leg. This phenomenon was not observed in the non-training subjects, who on average had similar myolectrical manifestations of fatigue in both legs. Results Results showed that the right and the left muscles of the skaters in the experimental group differed in myolectrical manifestations of fatigue, but this difference was non-significant in the control group.The subjects from the two groups did not differ in the myolectrical manifestations of fatigue of the left muscle, they did in the myolectrical manifestations of fatigue of the right muscle. The elite speed-track skaters had higher myolectrical manifestations of fatigue in the right muscle than the non-training subjects.Conclusions Training should thus be planned in a way that minimizes the risk of causing muscle myolectrical manifestations of fatigue asymmetry in skaters despite the typically asymmetrical muscle work during training on ice and competition, thus new training protocols should be developed or considered to decrease that asymmetry.Trial registration The tests were previously approved by the Bioethical Commission of the Chamber of Physicians in Opole. (Resolution No. 235 of 13 December 2016).

scholarly journals Asymmetrical fatiguing of the gluteus maximus muscles in the elite short-track female skaters.

2020 ◽  
Author(s):  
Mariusz Konieczny ◽  
Paweł Pakosz ◽  
Mateusz Witkowski
Keyword(s):  
Repeated Measures ◽  
Gluteus Maximus ◽  
Signal Frequency ◽  
Control Group ◽  
National Team ◽  
Muscle Work ◽  
Risk Of Injury ◽  
Gluteus Maximus Muscle ◽  
The Right ◽  
One Way Anova

Abstract Background: According to research, fast skating on short distances causes asymmetry in the physiology of muscle work. As has been proven in many sporting disciplines, this asymmetry can increase the risk of injury. The aim of the study was to analyze the level of right and left fatigue asymmetry of gluteus maximus muscle in elite skaters on a short track and to compare this phenomenon to a control group. The muscles were chosen deliberately, due to their influence in maintaining the right position during training on ice. Methods: The experiment compared a group of eight members of the Polish Women’s National Team in short track with a group of eight non-training people. The subjects did the Biering-Sorensen test, in which sEMG (surface electromyography) signal frequency was measured in the gluteus maximus muscles during an isometric contraction. Fatigue slopes were analyzed with a one-way ANOVA with repeated measures.. In the skaters, the fatigue differed between the right and the left gluteus maximus muscles. All the skaters had higher fatigue in the right leg. This phenomenon was not observed in the non-training subjects, who on average had similar fatigue in both legs. Results: The results suggest that professional short-track training leads to considerable asymmetry in fatigability of gluteus maximus muscles, thereby increasing the risk of injury in training and competition. Conclusions: Training should thus be planned in a way that minimizes the risk of causing muscle fatigue asymmetry in skaters despite the typically asymmetrical muscle work during training on ice and competition, thus new trainign protocols should be developed or considered to decrease that asymmetry. Trial registration: The tests were previously approved by the Bioethical Commission of the Chamber of Physicians in Opole. (Resolution No. 235 of 13 December 2016).

scholarly journals Pre-Olympic Ice-Skaters Training Versus Muscle Fatigability Assessed by sEMG

2019 ◽  
Author(s):  
Paweł Pakosz ◽  
Anna Lukanova-Jakubowska ◽  
Mariusz Konieczny
Keyword(s):  
Endurance Training ◽  
Lower Limb ◽  
Surface Electromyography ◽  
Female Athletes ◽  
Gluteus Maximus ◽  
Average Frequency ◽  
Signal Frequency ◽  
National Team ◽  
The Mean ◽  
The Right

The aim of this study was to investigate the size of the change in fatigability of gluteus maximus muscles during difficult endurance training in dynamic conditions. The research covered involved eight female athletes of the Polish National Team in short track, which had been prepared to the Olympic Games in PyeongChang. The sEMG system was used to measure fatigue of right and left gluteus maximus muscles, in the modified Biering-Sorensen test. The test was conducted five times during the training: before training, after warmup, and after each of 3 series of the endurance training. Comparing the mean frequency of the surface electromyography power spectrum of the first and the last seconds of the test, statistically significant reduction (p<0.05) of the average frequency value of the right muscle from 55.61±7.08 Hz to 48.64±4.48 Hz and left muscle from 58.78±4.98 Hz to 53.18±4.62 Hz was reported. In the conducted Biering-Sorensen test, the value of the muscle signal frequency measured by surface electromyography decreases, which may prove the muscle fatigue. Reductions in the frequency measured in the first and the last second of the test, was higher of the right lower limb. The size of the d Cohen effect in fatigue drops along with subsequent five tests during the training.

scholarly journals A study on occurrence of third trochanter in the femora in northern Tamil Nadu region

2015 ◽  
Vol 04 (04) ◽  
pp. 186-189
Author(s):  
N Muthukumaravel ◽  
K. Y Manjunath
Keyword(s):  
Tamil Nadu ◽  
Average Length ◽  
Gluteus Maximus ◽  
Functional Difference ◽  
Human Beings ◽  
Average Width ◽  
Medical College ◽  
The Third ◽  
Gluteus Maximus Muscle ◽  
The Right

Abstract Background and aims: The third trochanter is defined as the osseous tubercule in the superior part of the gluteal tuberosity. The occurrence of third trochanter might have been due to the consequence of the relative strengthening of gluteus maximus muscle in human beings. The present study was undertaken on the femora of northern Tamil Nadu region with the aim to determine the frequency of third trochanter of femur in this region and to compare it with occurrence in other series. Material and methods: The study was carried out on a collection of 153 dried adult femora of unknown age and sex available at the departments of Anatomy of Annapoorana Medical College and Vinayaka Mission's Homeopathy Medical College, Salem, Tamil Nadu, India. Results: Out of total 153 femora studied, the presence of third trochanter was noticed in 21 femora (13.72%). Out of these 15.71% were femora of the right side and 12.04% were of the left side. The average length and breadth of the third trochanters were 19.80±5.22 mm and 7.63±1.75 mm respectively Conclusion: The occurrence of the third trochanter was considerably higher among right femora than the femora of the left side. The average length of the third trochanters was found to be more on the right side and average width was more on the left side. This may be due to functional difference between the right and left gluteus maximii muscles.

scholarly journals Hematoma After a Fluoroscopically Guided Sacroiliac Joint Injection: A Case Report

2021 ◽  
pp. 63-66
Author(s):  
Vwaire Orhurhu
Keyword(s):  
Case Report ◽  
Sacroiliac Joint ◽  
Gluteus Maximus ◽  
Joint Injection ◽  
Risks And Benefits ◽  
Gluteus Maximus Muscle ◽  
The Right ◽  
Anticoagulated Patients ◽  
Key Words Anticoagulation ◽  
New Onset

Background: Sacroiliac joint injection continues to play a role in the diagnosis and therapeutic management of patients with sacroiliac joint arthropathy, as it provides pain relief and improvement in function to those patients. It is considered a low-risk pain procedure with minimal to no adverse side effects. Although rare, serious com-plications such as infection and hematoma are a possibility, however. In anticoagulated patients, interventional pain physicians are advised to weigh the risks and benefits before discontinuing anticoagulation. The literature describes serious complications associated with stopping anticoagulation, such as myocardial infarction. Howev-er, we should also be mindful of the possibility of intramuscular hematoma formation in anticoagulated patients receiving a fluoroscopically guided sacroiliac joint injection. Case Report: This case exposes the development of a 300-mL hematoma in the right gluteus maximus muscle after a fluoro-scopically guided sacroiliac joint injection in a patient who was taking warfarin. Consequently, she also developed neurologic symptoms such as new-onset urinary retention, weakness, and decreased sensation in her right leg. Conclusion: Pain physicians should be mindful of the risks and benefits before deciding to hold or discontinue anticoagulation in patients undergoing fluoroscopically guided sacroiliac joint injection, as intramuscular hematomas are a possible complication. Key words: Anticoagulation, hematoma, sacroiliac joint arthropathy, sacroiliac joint injection complications

scholarly journals Topical 1% Nalbuphine on corneal sensivity and epitheilization after experimental lamellar keratectomy in rabbits

2012 ◽  
Vol 42 (4) ◽  
pp. 679-684 ◽  
Author(s):  
Miguel Ladino Silva ◽  
Dunia Yisela Trujillo Piso ◽  
Alexandre Pinto Ribeiro ◽  
Jose Luiz Laus
Keyword(s):  
Repeated Measures ◽  
Area Under The Curve ◽  
Control Group ◽  
State University ◽  
Corneal Sensitivity ◽  
Repeated Measures Anova ◽  
Paulo State ◽  
The Right ◽  
Post Hoc ◽  
Animal Care

The present study was aimed to evaluate the effects of topical 1% nalbuphine on corneal sensitivity and re-epithelialization, after lamellar keratectomy in rabbits. All protocols were approved by the Animal Care Comission of São Paulo State University (Protocol 028793-08) and were conducted in accordance with the Institutional Animal Committee and the Association for Research in Vision and Ophthalmology (ARVO) statement for the use of animals in research. Surgeries were performed on the left eye (Nalbuphine Group) and on the right eye (Control Group). Two groups were formed (n=10) and corneas received either 30µl of 1% nalbuphine (NG) or 30µl of 0,9% saline (CG). Treatments occurred at 7, 11, 15 and 19 hours. After the surgery, the corneas were stained with fluorescein and photographed daily; corneal touch threshold (CTT) was assessed with Cochet-Bonnet aesthesiometer, at 7 and 19 hours, 20 minutes after treatments. Data were statistically compared with repeated measures ANOVA and Bonferroni post-hoc test, and T test (P<0.05). Average ±SD time for corneal re-epithelialization was 7.40±0.47 days (NG) and 8.90±0.31 days (CG) (P=0.11). The results showed that the diameter of the keratectomized area and CTT did not change significantly between both groups (P>0.05); however, a higher area under the curve for both parameters was observed in the NG (2771), in comparison to CG (2164). Topical 1% nalbuphine did not change significantly corneal sensitivity and re-epithelialization, after experimental lamellar keratectomy in rabbits.

Effect of Ingestion of Smokeless Tobacco on Motor Distal Latency of the Median Nerve

1988 ◽  
Vol 67 (1) ◽  
pp. 283-290 ◽  
Author(s):  
Mike J. Lester ◽  
Bert H. Jacobson ◽  
Steven W. Edwards
Keyword(s):  
Neuromuscular Junction ◽  
Smokeless Tobacco ◽  
Repeated Measures ◽  
Nerve Fibers ◽  
Control Group ◽  
Brand Name ◽  
Receptor Sites ◽  
Repeated Measures Analysis ◽  
Nervous Transmission ◽  
The Right

Subjects were 17 men between the ages of 18 and 32 yr. and regular users of smokeless tobacco. Each subject received three treatments consisting of one pouch of Skoal Bandits, one pinch of their regular brand, and a nonnicotine piece of chewing gum. The nervous transmission at the neuromuscular junction in the right thumb was compared before treatment and once every minute for 15 min. after treatment. Repeated-measures analysis of variance indicated a significant increase in the distal latencies for both the brand-name grouping and in the regularly used brand. No such difference was found in a control group when compared to the pretest results. It was concluded that smokeless tobacco ingestion resulted in a delay in the nervous transmission across the neuromuscular junction. This delay was hypothesized to be caused by the enduring binding action of nicotine to the acetylcholine receptor sites, thereby blocking the impulse in some of the faster conducting nerve fibers.

Chronic low back pain changes the latissmus dorsi and gluteus maximus muscles activation pattern and upward scapular rotation: A cross-sectional study

2021 ◽  
pp. 1-9
Author(s):  
Rania R. Mohamed ◽  
Amr A. Abdel-aziem ◽  
Hatem Y. Mohammed ◽  
Reham H. Diab
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Latissimus Dorsi ◽  
Gluteus Maximus ◽  
Control Group ◽  
Shoulder Abduction ◽  
Low Back ◽  
Activation Pattern ◽  
The Right

BACKGROUND: Patients with chronic low back pain (LBP) have an impaired dynamic spinal stability, which may lead to arm injuries. OBJECTIVES: To examine the latissimus dorsi and gluteus maximus muscles activation pattern and the upward scapular rotation in patients with chronic LBP. METHODS: Sixty-one right-handed males were divided into two groups: chronic LBP group (n= 31) and healthy controls (n= 30). The electromyography (EMG) activities of the right and left latissimus dorsi and gluteus maximus were recorded. The upward scapular rotation in different shoulder positions (neutral, 45∘, 90∘, 135∘ abduction and end range) was measured in both groups. RESULTS: The LBP group has a bilateral significant increased EMG of latissimus dorsi (p< 0.05) and significantly decreased EMG of gluteus maximus (p< 0.05) compared to the control group, without significant differences between the right and left sides (p> 0.05). There was a significant increase in upward scapular rotation in the LBP group relative to the control group in all shoulder abduction positions on both sides. The left side upward scapular rotation was more significant than the right (p< 0.05). CONCLUSION: Chronic LBP increased the latissimus dorsi muscle activities and decreased the gluteus maximus activities. It furthermore increased the upward scapular rotation in different shoulder abduction positions.

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