scholarly journals EMG Activity of Transversus Abdominis, Multifidus and Co-Contraction Index in Different Phases Amongst Varied Level Archers: A Cross-Sectional Study

2021 ◽  
Vol 28 (1) ◽  
pp. 19-23
Author(s):  
Sheikh Azhar ◽  
Saurabh Sharma ◽  
Shalini Sharma ◽  
Tarushi Tanwar

Abstract Introduction. Core muscle activity is a necessary requirement in most sports. However, its role in archers has not been studied. Therefore, this study sought to determine muscle activity of Transversus abdominis (TA) and Multifidus (MF) and co-contraction index (CCI) using surface electromyography (s EMG) during different phases of shots in archers with different levels of training. Material and Methods. It was an observational study with a cross-sectional design. Twenty-eight healthy male archers were recruited and grouped according to their level of training: Group A (Beginners (n = 9)), Group B (Trained (n = 10)), Group C (Elite (n = 9)). The muscle activation (%MVIC) for MF and TA for 10 successive archery shots (distance: 10 meters in 200 seconds) was recorded using s EMG for all the phases of the shots along with CCI. Results. Three-way ANOVA revealed a significant difference for TA activity within groups (p ≤ 0.001) and phases (p = 0.002), A significant difference for MF activity was found within groups (p ≤ 0.001). A significant difference for CCI was found between groups (p ≤ 0.001) and in the interaction between phase × shot (p = 0.001). Conclusions. The findings of the study showed that elite archers had more activity of the core muscles (TA and MF) and their CCI was found to be much higher with respect to the trained and beginner archers. Therefore, it is essential to incorporate dynamic stabilization exercises into archery training.

Author(s):  
Heidi K. Byrne ◽  
Jack H. Wilmore

The present cross-sectional study was designed to investigate the relationship between exercise training and resting metabolic rate (RMR). The focus of this investigation was to compare RMR in aerobically trained (AT), resistance trained (RT), and untrained (UNT) women. Subjects were also classified as highly trained (HT), moderately trained (MT), or untrained (UNT) in order to examine the relationship between RMR and level of training. Sixty-one women between the ages of 18 and 46 years volunteered to serve as subjects in this study. Each subject completed measurements of body composition, maximal oxygen uptake (V̇O2max), and two consecutive measurements of RMR. The data presented show that there was no significant difference in resting metabolic rate between resistance-trained, aerobically trained, and control subjects. However, when grouped by intensity of training, there was a trend for an increased resting metabolic rate (kcal/day) in the highly trained subjects, regardless of mode of training.


Author(s):  
Hashim Bin Mansoor ◽  
Zahra Khalid ◽  
Abdullah Jan ◽  
Rumeesha Zaheer

Objective: To determine the most desired lip profile and compare the subjective sense of aesthetics among orthodontists, general dentists and the general population. Method: The cross-sectional study was conducted at the Orthodontic Department of the Armed Forces Institute of Dentistry, Rawalpindi, Pakistan, from January 1 to February 25, 2020, and comprised different silhouettes for each gender with increasing lip procumbence from -6mm to +6mm with respect to Rickett’s E-line which were created using Photoshop CS 8.0 after cephalometric analysis of 20 cephalograms. The sample comprised an equal number of orthodontists in group A, general dentists in group B and orthodontic treatment-seekers in group C with equal representation of the two genders. Data was analysed using SPSS 24. Results: Of the 180 subjects, there were 60(33.3%) in each of the three groups, with 30(50%) males and as many females in all the groups. All the three groups preferred the average lip profile for males (p=0.018) and 2mm procumbent lips for females (p=0.008). There was significant difference of opinion between groups A and C (p=0.034) and between groups  B and C (p=0.022). Conclusion: There was found to be a marked difference of opinion among the orthodontists, the general dentists and the orthodontic treatment-seekers regarding the desired lip profile. Key Words: Aesthetics, Pakistani population, Cephalometrics, Lip profile. Continuous...


2019 ◽  
Vol 5 (1) ◽  
pp. e000556
Author(s):  
Ulrike H Mitchell ◽  
A Wayne Johnson ◽  
Patrick J Owen ◽  
Timo Rantalainen ◽  
Daniel Belavy

ObjectiveThe transversus abdominis muscle (TrA) is active during running as a secondary respiratory muscle and acts, together with the multifidus, as trunk stabiliser. The purpose of this study was to determine size and symmetry of TrA and multifidus muscles at rest and with contraction in endurance runners without low back pain.DesignCross-sectional study.SettingA medical imaging centre in Melbourne, Australia.ParticipantsThirty middle-aged (43years±7) endurance-trained male (n=18) and female (n=12) runners without current or history of low back pain.Outcome measuresMRI at rest and with the core engaged. The TrA and multifidus muscles were measured for thickness and length (TrA) and anteroposterior and mediolateral thickness (multifidus). Muscle activation was extrapolated from rest to contraction and compared with the same and contralateral side. Paired t-tests were performed to compare sides and contraction status.ResultsLeft and right TrA and multifidus demonstrated similar parameters at rest (p>0.05). However, with contraction, the right TrA and multifidus (in mediolateral direction) were 9.2% (p=0.038) and 42% (p<0.001) thicker, respectively, than their counterparts on the left. There was no TrA thickness side difference with contraction in left-handed participants (p=0.985). When stratified by sex, the contracted TrA on the right side remained 8.4% thicker, but it was no longer statistically significant (p=0.134). The side difference with contraction of the TrA became less with increasing training age.ConclusionsRight-handed long-term runners without low back pain exhibit a greater right side core muscle activation when performing an isometric contraction. This activation preference diminishes with increasing training age.


2020 ◽  
Vol 14 (4) ◽  
pp. 216-220
Author(s):  
Zahed Mantashloo ◽  
Heydar Sadeghi ◽  
Mehdi Khaleghi Tazji ◽  
Vanessa Rice ◽  
Elizabeth J Bradshaw

Objective: The aim of this study was to examine the effect of hyper pronated foot on postural control and ankle muscle activity during running and cutting movement (v-cut). Methods: In this Cross-Sectional study, 42 young physically active (exercising three times per week regularly) males participated in this study, including 21 with hyper-pronated feet and 21 with normal feet. Each participant completed a running and cutting task. Body postural control was measured using a force platform (1000Hz) which was synchronized with surface electromyography of selected ankle muscles. MATLAB software was used to process and analyze the data. One-away ANOVA was used to identify any differences between groups. Results: Differing muscle activation patterns in the surrounding ankle musculature (tibialis anterior, peroneus longus) through to reduced postural stability in the medial-lateral direction and increased vertical ground reaction forces were observed between groups. Conclusion: According to the obtained results it seems that subtalar hyper-pronation can be regarded as a factor affecting the biomechanics of cutting by changing activation patterns of the muscles surrounding the ankle, and reducing postural control of the body in medial-lateral direction, but not in anterior-posterior direction.


Author(s):  
Meita Hendrianingtyas ◽  
MI. Tjahjati DM

Patients in intensive care unit (ICU) have a high risk for systemic bacterial infection. Serum procalcitonin (PCT) known as a markerto predict bacterial infection, systemic inflammation responsse (SIRS) or sepsis. Another simple and easy indicator is by using leucocytecount-differential count, absolute neutrophyl count (ANC), and immatur/total (I/T) neutrophyl ratio. The aim of this study was toknow the comparation of the leucocyte count-differential count, ANC, and I/T ratio with procalcitonin serum value in patients suspectto systemic bacterial infection at ICU. A cross sectional study on 20 patients suspected with systemic bacterial infection in ICU. The datawas classified in 3 groups based on PCT serum value: group A (< 0.5 ng/mL), group B (0.5–2 ng/mL) and group C (> 2 ng/mL). Thedata was analysed by one way ANOVA test if normally distributed, and by Kruskall-Wallis test if not normally distributed. Significancywas confirmed at p < 0.05. A post hoc and Mann-Whitney test performed on a significant result. The frequency of group A was 3 (15%),group B = 5 (25%), and group C = 12 (60%). There is no significant difference on leucocyte count in 3 groups (p = 0.953), neutrophylI/T ratio (p = 0.259), ANC (p = 0.91), eosinophyl count (p = 0.287), segment neutrophyl (p = 0.094), and monosit (p = 0.152).There was a difference on lymphocyte count (p = 0.01) between group C with group A and group B and there was a difference on staffneutrophyl count (p = 0.029) and total neutrophyl count (p = 0.003) between group A with group B and C (p = 0.029). In this studywere found differences on lymphocyte, staff neutrophyl and total neutropyl count to the PCT value


2021 ◽  
Vol 71 (5) ◽  
pp. 1582-84
Author(s):  
Hassam Anjum Mir ◽  
Mubashir Sharif ◽  
Ali Asif ◽  
Maleeha Shamim ◽  
Maaz Qureshi ◽  
...  

Objective: To determine if the traditional chewing stick Miswak was as effective in cleaning teeth as Toothbrush. Study Design: Cross sectional study. Place and Duration of Study: Armed Forces Institute of Dentistry, Rawalpindi, from Aug 2020 to Jan 2021. Methodology: A total of 300 subjects were included which were divided in two groups on the basis of whether they used miswak or toothbrush as a cleaning aid. Group A was toothbrush users and group B was Miswak user. Plaque Index was used to determine the cleanliness of teeth. The scores were recorded and data analyzed using SPSS-23. Results: The means and standard deviations of Plaque Index score for group A and B were 0.96 ± 0.58 and 0.98 ± 0.56 respectively. The comparison of Plaque Index score for both groups was insignificant with the p-value of 0.083. Conclusion: Within the limitations of this study, it is concluded that, no significant difference was found in the effectiveness of traditional miswak and tooth brush. It is recommended that if the technique of teeth cleaning is good then any of the abovementioned means of teeth cleaning can be used.


2015 ◽  
Vol 12 (1) ◽  
pp. 22-24
Author(s):  
N Ansari ◽  
CR Das

Introduction: The third stage of labour is the period which follows the completed delivery of the foetus and consists of delivery of the placenta and its attached membranes.Aims and objectives: Comparison of oxytocin & misoprostol in active management of third stage of labour.Material and Methods: This is a comparative cross-sectional study was conducted in Nepalgunj Medical College Teaching Hospital, Kohalpur from March 2013 to March 2014. Group A - Oxytocin 10 IU IV bolus in 100 patients and Group B - Misoprostol 600 micro gram rectally. The collected were subjected to statistical analysis using SPSS 15.Results: After active management with bolus oxytocin, the blood loss was grossly reduced being 40-100ml in 84% cases and only 7% had blood loss more than 100ml. blood loss between 200-300ml were only 6% and only 3% had PPH, after misoprostol 80% of cases had blood loss within 40 – 100 ml., 6% cases had blood loss within 100 – 200 ml. and larger amount of blood loss i.e. between 200 – 300 ml. was observed in 7% cases, in 3% cases blood loss was between 300 – 400 ml. and 4% of women in this group had PPH.Conclusion: There was no statistically significant difference in the efficacy of oxytocin and misoprostol in reducing amount of blood loss and duration of labour rd in 3 stage of labour.Journal of Nepalgunj Medical College Vol.12(1) 2014: 22-24


Author(s):  
Zena Mudhfar Al-nema

 Objectives: The objectives of the study were to compare the health knowledge of women of different age groups. To evaluate different methods for developing health literacy.Methods: A cross-sectional study was conducted from December 2014 to January 2016 in Baghdad, Iraq. All candidates were females, age ≥18 years, neither medical staff nor medical students.The sample was divided into two groups: Group A: Females aged18–45 years, Group B: Females aged >45 years. A comparison between the two groups regarding their health literacy and the source of information was made.Results: The final sample included 213 women, of them, there were 107≤45 years (Group A) and 106>45 years (Group B) women. Significant difference was found between both groups regarding the knowledge about the prevention of cholera where the accurate answers were 46.7% in Group A versus 80.1% in Group B. The main source of information for both groups was the personal experience. However, internet was used more (42%) by the younger women (Group A), and television was used more (52.8%) by the older women (Group B).Conclusion: Young women had a better literacy on common medical problems, but the old showed overall limited health literacy. Pharmacists, physicians, and activities of the Ministry of Health played an impotent role in health literacy in the old women. 


2017 ◽  
Vol 7 (1) ◽  
pp. 15-19
Author(s):  
Fakhrul Amin Mohammad Hasanul Banna ◽  
Zakia Sultana

Background: The position and size of isthmus of thyroid gland varies considerably in human with age, sex, physiologic state, race and geographical location and sometimes the isthmus may be absent. So this study was designed to find out the macroscopic differences in isthmus of thyroid gland of different age and sex groups in Bangladeshi people.Objective: To record the macroscopic characteristics of isthmus of thyroid gland with advancing age in both sexes with a view to help establishing normal standard of Bangladeshi people.Materials and Methods: This descriptive cross-sectional study was carried out on 54 autopsied human thyroid glands aged 5 to 65 years. Thyroid glands were collected from unclaimed dead bodies autopsied in the morgue of Sylhet M. A. G. Osmani Medical College, Sylhet. The collected specimens were divided into groups –– A (20 years and below), B (21 to 50 years) and C (50 years and above). All specimens were examined morphologically by careful gross dissection method.Results: The isthmus was absent in 5.56% cases. In most of the cases (35.29%) it was against the 1st–4th tracheal rings. There was significant difference in length between Group A and Group C (p<0.05) and in breadth between Group A and Group C and between Group B and Group C (p<0.05). No significant difference was found in length, breadth and thickness of isthmus of the thyroid gland between males and females.Conclusion: The presence or absence, positional change and variation in gross dimension of isthmus of thyroid gland were evident in human. The macroscopic difference was found with increasing age but not with sex.J Enam Med Col 2017; 7(1): 15-19


1999 ◽  
Vol 86 (6) ◽  
pp. 1994-2000 ◽  
Author(s):  
Tadashi Abe ◽  
Takumi Yamada ◽  
Tomoyuki Tomita ◽  
Paul A. Easton

In humans during stimulated ventilation, substantial abdominal muscle activity extends into the following inspiration as postexpiratory expiratory activity (PEEA) and commences again during late inspiration as preexpiratory expiratory activity (PREA). We hypothesized that the timing of PEEA and PREA would be changed systematically by posture. Fine-wire electrodes were inserted into the rectus abdominis, external oblique, internal oblique, and transversus abdominis in nine awake subjects. Airflow, end-tidal CO2, and moving average electromyogram (EMG) signals were recorded during resting and CO2-stimulated ventilation in both supine and standing postures. Phasic expiratory EMG activity (tidal EMG) of the four abdominal muscles at any level of CO2 stimulation was greater while standing. Abdominal muscle activities during inspiration, PEEA, and PREA, were observed with CO2stimulation, both supine and standing. Change in posture had a significant effect on intrabreath timing of expiratory muscle activation at any level of CO2stimulation. The transversus abdominis showed a significant increase in PEEA and a significant decrease in PREA while subjects were standing; similar changes were seen in the internal oblique. We conclude that changes in posture are associated with significant changes in phasic expiratory activity of the four abdominal muscles, with systematic changes in the timing of abdominal muscle activity during early and late inspiration.


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