scholarly journals Unilateral and bilateral training competitive archers differ in some potentially unhealthy neck-shoulder region movement behaviour characteristics

Author(s):  
Mareike Schmitt ◽  
Lutz Vogt ◽  
Jan Wilke ◽  
Daniel Niederer

Abstract Background Excessive unilateral joint loads may lead to overuse disorders. Bilateral training in archery is only performed as a supportive coordination training and as a variation of typical exercise. However, a series of studies demonstrated a crossover transfer of training-induced motor skills to the contralateral side, especially in case of mainly unilateral skills. We compared the cervical spine and shoulder kinematics of unilateral and bilateral training archers. Methods In this cross-sectional study, 25 (5 females, 48 ± 14 years) bilaterally training and 50 age-, sex- and level-matched (1:2; 47.3 ± 13.9 years) unilaterally training competitive archers were included. Cervical range of motion (RoM, all planes) and glenohumeral rotation were assessed with an ultrasound-based 3D motion analysis system. Upward rotation of the scapula during abduction and elevation of the arm were measured by means of a digital inclinometer and active shoulder mobility by means of an electronic caliper. All outcomes were compared between groups (unilaterally vs. bilaterally) and sides (pull-hand- vs. bow-hand-side). Results Unilateral and bilateral archers showed no between group and no side-to-side-differences in either of the movement direction of the cervical spine. The unilateral archers had higher pull-arm-side total glenohumeral rotation than the bilateral archers (mean, 95% CI), (148°, 144–152° vs. 140°, 135°-145°). In particular, internal rotation (61°, 58–65° vs. 56°, 51–61°) and more upward rotation of the scapula at 45 degrees (12°, 11–14° vs. 8°, 6–10°), 90 degrees (34°, 31–36° vs. 28°, 24–32°), 135 degrees (56°, 53–59° vs. 49°, 46–53°), and maximal (68°, 65–70° vs. 62°, 59–65°) arm abduction differed. The bow- and pull-arm of the unilateral, but not of the bilateral archers, differed in the active mobility of the shoulder (22 cm, 20–24 cm vs. 18 cm, 16–20 cm). Conclusions Unilaterally training archers display no unphysiologic movement behaviour of the cervical spine, but show distinct shoulder asymmetris in the bow- and pull-arm-side when compared to bilateral archers in glenohumeral rotation, scapula rotation during arm abduction, and active mobility of the shoulder. These asymmetries in may exceed physiological performance-enhancing degrees. Bilateral training may seems appropriate in archery to prevent asymmetries.

2020 ◽  
Vol 73 (9-10) ◽  
pp. 301-308
Author(s):  
Aleksandra Aleksic ◽  
Mirjana Gnjatic ◽  
Mirjana Stupar-Hofman ◽  
Vesna Tomic-Spiric

Introduction. Diseases associated with immunoglobulin E hypersensitivity, such as allergic rhinitis, may have different clinical expressions. Patients with allergic rhinitis often have associated diseases, comorbidities, which supports the concept of allergy as a systemic disease. The aim of this study was to evaluate the incidence and types of comorbidities in allergic rhinitis. We also evaluated the possible effects of certain clinical and demographic parameters on the onset of comorbidities. Material and Methods. This retrospective, observational, and cross-sectional study included patients with a clinical diagnosis of allergic rhinitis treated at the Department of Ear, Nose and Throat in the period from October 2011 to April 2013. The collected data were analyzed using the Statistical Analysis System (Institute Inc. NC, USA) program, version 9.1.3. Results. The study included 319 patients with allergic rhinitis. Allergic rhinitis was intermittent in 30.7% of cases, persistent in 37.9%, and persistent with seasonal exacerbation in 31.3% of patients. We found that 86.8% of patients had some form of comorbidity. The most common were conjunctivitis (50.2%), almost equal percentage of asthma (29.8%) and chronic rhinosinusitis (28.8%), followed by otitis media with effusion (8.8%), atopic dermatitis (5.2%), urticaria (4.1%), and laryngitis (3.8%). Persistent allergic rhinitis, with persistent nasal obstruction as the dominant symptom, was significantly associated with chronic rhinosinusitis. Positive family history was significantly associated with the occurrence of asthma and allergic rhinitis. Conclusion. The results of our study showed that allergic rhinitis is rarely an isolated condition and it should always be observed in the context of the allergic respiratory syndrome.


2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Vashti Resti Putri Firdaus ◽  
Aswiyanti Asri ◽  
Daan Khambri ◽  
Wirsma Arif Harahap

AbstrakGejala kanker payudara sering tidak disadari atau dirasakan dengan jelas oleh penderita, sehingga banyak penderita yang datang dalam keadaan stadium lanjut. Banyak faktor yang mempengaruhi prognosis dari kanker payudara, antara lain grading histopatologi, reseptor estrogen dan progesteron, HER2, serta infiltrasi limfovaskular. Tujuan penelitian ini adalah menentukan hubungan antara grading histopatologi dan infiltrasi limfovaskular terhadap subtipe molekuler pada kanker payudara invasif. Distribusi frekuensi dari grading histopatologi, infiltrasi limfovaskular, dan subtipe molekuler pada kanker payudara invasif di bagian bedah RSUP.Dr. M. Djamil Padang selama periode 1 Januari 2010 – 31 Desember 2013. Metode penelitian ini adalah observational analitik, dengan pendekatan cross sectional. Dalam penelitian ini didapatkan 424 kasus kanker payudara invasif, dengan 66 kasus yang dapat dianalisis. Analisis data yang digunakan univariat dan bivariat dengan menggunakan uji chi-square dengan derajat kemaknaan p<0,05. Ada hubungan yang bermakna antara grading histopatologi dengan subtipe molekuler (p=0,032). Hubungan infiltrasi limfovaskular dengan subtipe molekuler pada kanker payudara invasif didapatkan bermakna (p=0,000).Kata kunci: grading histopatologi, infiltrasi limfovaskular, subtipe molekuler, kanker payudara invasif AbstractBreast cancer symptoms are often not recognized or clearly perceived by the patient, so it makes most of patients come to doctor in late stage. There are many prognosis factors in breast cancer, such as hystopathology grading, estrogen and progesteron receptors, HER2, and lymphovascular infiltration.The objective of this study was to determine the association between hystopathology grading and lymphovascular infiltration with molecular subtype in invasive breast cancer. Determine the distribution and frequency of hystopatology grading, lymphovascular infiltration, and molecular subtype in invasive breast cancer at surgery department Dr. M. Djamil Hospital Padang period January 1, 2010 – December 31, 2013. The method of this research is analitic observational with cross sectional study. In this research obtained 424 cases of invasive breast cancer, with only 66 cases that could be analyzed. The analysis system that used is univariat and bivariat with chi-square (p<0,05). There is significant correlation between hystopathology grading with molecular subtype (p=0,032). There is significant correlation between lymphovascular infiltration with molecular subtype (p=0,000).Keywords: histopathology grading, lymphovascular infiltration, molecularsubtypes, invasive breast cancer


Spine ◽  
2003 ◽  
Vol 28 (2) ◽  
pp. 129-133 ◽  
Author(s):  
Cynthia Peterson ◽  
Jennifer Bolton ◽  
Angela R. Wood DCR(R) ◽  
B. Kim Humphreys

2004 ◽  
Vol 1 (2) ◽  
pp. 107-117 ◽  
Author(s):  
C Leleu ◽  
C Cotrel ◽  
E Barrey

AbstractIn Standardbreds, the main aim of early training (begun during the growth period) is the mechanization of athletes leading to a particular gait called the ‘flying trot’. The present cross-sectional study was undertaken to investigate the biomechanical and physiological factors involved in this gait change, and aimed to analyse the effect of age on gait and energetic variables in a population of Standardbred horses under training. One hundred and forty-three horses aged from two to seven years were tested on a track at three speeds (8.5, 10 and 11.6 m s−1) with a gait-analysis system. Gait variables (temporal and linear variables, symmetry, regularity, two-beat rhythm, dorso-ventral, longitudinal and lateral activities) were compared between four age groups (two-, three-, four-, and five-year-olds and above). After a standardized exercise test, two energetic variables (V4 and V200) were also compared between these groups. Most variables were influenced by age/training status. The results indicated that, from young to mature racehorses, stride length and duration increase; and gait becomes more symmetric and more regular. We also observed a decrease in dorso-ventral, longitudinal and lateral activities, i.e. a decrease of thoracic displacements. These differences could be elucidated at slow speed and were still obvious at high speed. V4 and V200 also increased significantly with age/training status. All of these results indicate an improvement in co-ordination and a decrease in metabolic cost with increasing age/training status. Thus gait acquisition could be related to an improvement in trotting efficiency.


2019 ◽  
Author(s):  
AlJohara M AlQuaiz ◽  
Ambreen Kazi ◽  
Tawfik AM Khoja ◽  
Abdullah AlSharif ◽  
Hamad Al Mane ◽  
...  

Abstract Introduction: Limited information is available on the prevalence of anemia in adults and elderly. Contradictory results are available regarding the association between drinking Laban and anemia in children and adults. No study has explored this association in the adults/elderly population. The aim of this study was to measure the prevalence and association between anemia and food items among adults aged >50 years in Riyadh, Saudi Arabia. Material & Methods: 266 Saudi adults aged >50 years were invited to participate in a cross-sectional study in Riyadh. Anthropometric measurements were taken and blood samples were collected. Blood hemoglobin was measured with a Coulter Cellular Analysis System using the light scattering method. Multiple logistic regression analyses were performed to identify the food items significantly associated with anemia. Results: The mean (±SD) hemoglobin was 13.8 (±1.6) mg/dL. Anemia was prevalent among 19.9% (n = 53) of the participants. Infrequent intake of red meat [adjusted Odds Ratio [ORa] 3.4; 95% confidence interval [CI] 1.2, 9.7] and Laban (fermented yogurt drink) [ORa 2.7, 95% CI 1.1, 6.7] were significantly associated with anemia, whereas obesity (BMI >30) was protective [aOR 0.4, 95% CI 0.2, 0.9] from anemia. Conclusion: Anemia is prevalent among Saudi males and females aged >50 years. The association between drinking Laban and anemia support the emerging evidence on the role of probiotics in preventing anemia among adults and elderly. It is recommended that people aged >50 years should get regularly screened for anemia.


2019 ◽  
Vol 45 (1) ◽  
pp. 13-30
Author(s):  
Mariana Amaral ◽  
◽  
Ranata Furlan ◽  
Guilherme Santana ◽  
Clarice Figueiredo

PURPOSE: To investigate the motivation and the effects of: tongue movement direction; resistance force level; repetition number; and sustained tongue contraction duration on tongue motor performance in healthy pre-teen children using computer games. METHODS: An analytical observational cross-sectional study was conducted with 15 healthy 11-13 year-old children with normal lingual strength. The participants played six computer games using a tongue-controlled joystick. The series varied the time for continuous force application on the target (3 and 5 seconds) and the target force level (0.5, 1 and 2 N). After the tests, the participants answered a questionnaire about their impressions and reactions to the game. The variables analyzed were number of attempts to score (NAS), time for which the target force was maintained (TTFM), and the time spent for scoring (TSS). RESULTS: Of 43 normally developing candidates screened for the study, 15 (35%) were included for having entirely normal tongue structure and function and for being able to complete all of the study tasks. Of the 15 participants, 11 (73.3%) said that it was easy to play, three (20.0%) found it a bit hard to play, and only one (6.6%) considered it difficult to play. The results suggest that healthy individuals with normal lingual structure and function are able to successfully perform the games, but those with longer durations of sustained contraction (5 seconds) and the most required force (2 N) are the most difficult. Leftward and upward movements were more difficult than rightward and downward movements. CONCLUSION: All of these carefully selected participants were able to perform all of the study tasks, indicating that this method is feasible for pre-teens with normal lingual structure and function. The joystick device encouraged the participants to perform tongue movements that may be part of the typical orofacial myofunctional treatment exercises for tongue function. Results indicated that this game has the potential to be highly motivating for pre-teen children who are able to perform the tasks.


2021 ◽  
Author(s):  
Ssebuggwawo Jonathan ◽  
Wani Muzeyi ◽  
Erem Geoffrey ◽  
Waiswa Gonzaga ◽  
SSekitooleko badru ◽  
...  

Abstract Background: Accurate placement of pedicle screws in the sub axial cervical spine requires precise understanding of vertebrae anatomy. Little is known about the morphometric characteristics of the sub axial cervical pedicle in the Ugandan population. The objective of the study was to determine the morphometric dimensions of pedicles in the sub axial cervical spine among the adult Ugandan population. Methods: We conducted a cross sectional study from March to November 2019 among adult Ugandans with a normal cervical CT scan at Nsambya hospital in Kampala. Eligible participants were consecutively recruited into the study. Data on baseline characteristics and pedicle dimensions from the CT scan findings were collected using a structured questionnaire and analysed using Stata 13.0. Pedicle dimensions for the different levels of sub axial cervical vertebrae were summarised as means and standard deviations, the Mann Whitney test was used to compare pedicle dimensions for the different vertebrae level among females and males on both right and left side and the level of significance was set at 0.05. Results: A total of 700 sub axial cervical pedicles (C3-C7) from 49 males and 21 female participants were studied. Pedicle width diameter showed cephalo-caudal gradual increment from C3 [1.65(0.63) mm] to [3.46(0.75) mm] at C7. Pedicle height also showed an increase caudally with smallest diameter at C3 [1.98(0.76) mm] and largest at C5 in females [3.67(6.42) mm] and at C7in males [3.83(0.76) mm]. The pedicle height was wider than the pedicle width at all levels. The pedicle chord length gradually increased caudally in both sexes ranging from [29.08(1.35) mm] at C3 to [32.53(3.19) mm] at C7. The axial angles were oriented medially and showed no consistent trend ranging between 500 and 530. The sagittal angles decreased as one moved from C3 to C7. The dimensions of females were significantly smaller than in males.Conclusion: Pedicle endosteal width was smaller than pedicle height dimensions at all levels. Pedicle cord length increased caudally. The pedicle dimensions except angulations, were smaller in females than in males.


2013 ◽  
Vol 37 (1) ◽  
pp. 109-117 ◽  
Author(s):  
Amanda M. Clifford ◽  
Elaine Harrington

Patellar taping is a treatment adjunct commonly used in the management of anterior knee pain. The aim of this cross sectional study was to investigate the effects of medial glide patellar taping on sagittal plane lower-limb joint kinematics and knee pain during a unilateral squat in a symptomatic population complaining of anterior knee pain. Ten participants with a history of unilateral or bilateral anterior knee pain were included in the study. Subjects were required to squat on the symptomatic leg under three conditions: placebo tape, patellar tape and no tape. Kinematic data was recorded using the CODA mpx64 motion analysis system and subjects’ pain was assessed using the Numerical Rating Scale. Patellar taping resulted in a significantly greater single-legged squat depth compared to placebo tape (p=0.008) and no tape (p=0.001) and a statistically significant reduction in pain during a squat compared to placebo tape (p=0.001) or no tape (p=0.001). Significant differences were not identified for maximum knee flexion in the patella taping compared to the no tape condition. This study may have significant clinical implications as participants reported less pain and alterations in sagittal plane movement following the application of patellar tape.


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