scholarly journals Muscle Contraction is Impaired in Hypermobile People: A Study of The Lateral Abdominal Muscles

2021 ◽  
Author(s):  
Ulrike H. Mitchell ◽  
A. Wayne Johnson ◽  
Lauren Adams ◽  
Jade Kho ◽  
Daniel L. Belavy ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Cross Sectional Study ◽  
Joint Hypermobility ◽  
Trunk Muscle ◽  
Transversus Abdominis ◽  
Group Differences ◽  
Abdominal Muscles ◽  
Trunk Flexion ◽  
Cross Sectional ◽  
Thickness Change

Abstract Background: Emerging evidence suggests that muscle function can be impaired in people with generalized hypermobility. The Beighton scale was developed to assess for the presence of hypermobility. This cross-sectional study assessed the activation of the lateral abdominal muscles in hypermobile (N=10; Beighton score >5) and matched non-hypermobile control (N=10) participants. Methods: Panoramic ultrasound scans of the transversus abdominis (TrA) and the external and internal abdominal obliques (EO and IO, respectively) were obtained at three lumbar levels (L1, L3, L5) at rest and during the hollowing maneuver. Results: Between-group differences in the TrA length, as well as TrA, EO and IO thickness changes between conditions (rest vs hollowing) and trunk strength and endurance were examined. Hypermobile participants exhibited less TrA shortening than controls (L1-L5: 5.1% difference, L3: 8.9% difference) and greater thickness changes at level L1 (12.7% difference). EO and IO thickness differed between groups for both conditions, where both of the muscles were 0.07cm - 0.18cm thicker at rest and 0.07cm - 0.19cm thicker with hollowing in the hypermobile participants compared to control (all: P<0.001). The ability to contract the EO was less in hypermobile participants compared to controls (P=0.002; -5.3% vs no change in thickness), while the ability to contract the IO was greater in hypermobile participants compared to in controls (P=0.038; +21.3% vs +17.6% thickness change). Hypermobile participants demonstrated over 30% greater average trunk flexion strength. Moreover, greater joint mobility was associated with less TrA muscle shortening, reduced EO thickness changes, greater isometric trunk muscle strength for both extension and flexion (all: P<0.001) and with reduced trunk muscle endurance for extension and flexion (P=0.006 and P=0.002, respectively). Conclusion: The results of this study indicate joint hypermobility is associated with reduced ability to contract TrA and EO, however, this did not appear to be associated with impaired function (e.g. muscle strength and endurance).

scholarly journals Isokinetic evaluation of the trunk muscle strength in housewives with fibromyalgia: a cross-sectional study

2020 ◽  
Vol 60 (1) ◽  
Author(s):  
Cevriye Mülkoğlu ◽  
Sühan Taşkın ◽  
Seçil Vural ◽  
Başak Mansız Kaplan ◽  
Ahmet Buğra Selvi ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Cross Sectional Study ◽  
Trunk Muscle ◽  
Sectional Study ◽  
Cross Sectional ◽  
Trunk Muscle Strength ◽  
Isokinetic Evaluation

scholarly journals Bladder Base Displacement during Abdominal Muscles Contraction and Functional Activities in Primiparous Women Assessed by Transabdominal Ultrasound: A Descriptive Study

2021 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
Beatriz Arranz-Martín ◽  
Patricia García-Gallego ◽  
Helena Romay-Barrero ◽  
Beatriz Navarro-Brazález ◽  
Carlos Martínez-Torres ◽  
...  
Keyword(s):  
Maximal Voluntary Contraction ◽  
Cross Sectional Study ◽  
Voluntary Contraction ◽  
Abdominal Pressure ◽  
Abdominal Muscles ◽  
Transabdominal Ultrasound ◽  
Trunk Flexion ◽  
Cross Sectional ◽  
Bladder Base ◽  
Primiparous Women

This study described the response of the bladder base (BB) by transabdominal ultrasound in primiparous women during movements that activate the abdominopelvic cavity musculature and cause variations in intra-abdominal pressure (IAP). A descriptive cross-sectional study was conducted in 64 primiparous women at eight weeks after uncomplicated delivery. BB displacement was measured using a 5-MHz convex transducer in a suprapubic position. Participants were asked to perform the isolated contraction of pelvic floor musculature (PFM) and transverse abdominis (TrA), cough at high lung volume and trunk flexion with and without maximal voluntary contraction of PFM. PFM contraction elevated the BB in all but one participant, whereas TrA contraction caused the BB to ascend in 56% of the women and descend in the rest; their combined contraction rose the BB in 65% of the women although the effect was greater with only PFM contraction (p < 0.01). The BB descended in all participants during coughing and trunk flexion although the descent was inferior with the joint maximal voluntary contraction of PFM (p < 0.01). In conclusion, TrA contraction must be assessed individually in puerperal women since its effect on the BB varies among subjects. During movements increasing IAP, such as coughing or curl-ups, the anticipatory contraction of PFM reduces bladder descent although not sufficiently to counteract bladder displacement.

scholarly journals Trunk muscle function and pelvic alignment associated with the presence of pain in higher education students: a cross-sectional study

2020 ◽  
Vol 33 ◽  
Author(s):  
Márcio Antônio dos Santos ◽  
Carlos Eduardo Viana Santos ◽  
Adriano Rodrigues ◽  
Luciana Crepaldi Lunkes
Keyword(s):  
Higher Education ◽  
Muscle Strength ◽  
Muscle Weakness ◽  
Cross Sectional Study ◽  
Trunk Muscle ◽  
Sectional Study ◽  
Education Students ◽  
Cross Sectional ◽  
High Prevalence ◽  
Prevalence Of Pain

Abstract Introduction: The protective role of muscles in the passive structures of the spine means that their stability and consequent maintenance are associated with pain, especially in the region of the lumbo-pelvic-hip complex. Objective: To determine the prevalence of pain and its association with muscle deficits in higher education students. Method: Descriptive, observational, cross-sectional study that evaluated 120 university students through questionnaires (sample characterization, Nordic musculoskeletal symptoms, pain visual analogue scale and international physical activity). Trunk muscle strength and bridge tests with unilateral knee extension (pelvic alignment) were performed. Results: A high prevalence of pain was found in the lower back (58.41%). There was no association between the presence of pain, muscle strength and pelvic alignment (p> 0.05). There was an association between the trunk extension and pelvic tilt tests (p = 0.009). Conclusion: A high prevalence of low back pain, poor performance in the trunk muscle endurance tests and mild and moderate pelvic misalignment were identified. There was no association between pain, trunk muscle weakness and pelvic misalignment. There was an association between pelvic misalignment and trunk extensor muscle weakness.

scholarly journals How Do the Abdominal Muscles Change during Hypopressive Exercise?

Medicina ◽  
2021 ◽  
Vol 57 (7) ◽  
pp. 702
Author(s):  
Iria Da Cuña-Carrera ◽  
Alejandra Alonso-Calvete ◽  
Mercedes Soto-González ◽  
Eva M. Lantarón-Caeiro
Keyword(s):  
Ultrasound Imaging ◽  
Muscle Thickness ◽  
Standing Position ◽  
Cross Sectional Study ◽  
Transversus Abdominis ◽  
Abdominal Muscles ◽  
Cross Sectional ◽  
Objective Prior ◽  
External Oblique ◽  
Internal Oblique

Background and objective: Prior studies have reported an activation of abdominal muscles during hypopressive exercises in women with pelvic floor disfunction. However, no previous research analyzed the effects of hypopressive exercise on abdominal muscles in healthy populations to understand the normal biomechanics of this area. The aim of this study was to examine the thickness of abdominal muscles at rest and during hypopressive exercise in supine and standing positions with ultrasound imaging in healthy adults. Methods: A cross-sectional study was carried out in 99 healthy university students. The thickness of the abdominal muscles at rest and during hypopressive exercise was assessed with ultrasound imaging in supine and standing positions. Results: During hypopressive exercise, there was a significant increase in the muscle thickness of transversus abdominis (p < 0.001) and internal oblique (p < 0.001) in supine and standing positions. External oblique only increased its thickness significantly in the standing position (p < 0.001) and rectus abdominis did not change during the hypopressive exercise in any position (p > 0.05). In conclusion, hypopressive exercises seem to increase the thickness of the deepest and most stabilized muscles such as transversus abdominis and internal oblique. Conclusion: These findings should be considered for future interventions with hypopressive exercises in healthy subjects.

scholarly journals Increased modifiable cardiovascular risk factors in patients with Takayasu arteritis: a multicenter cross-sectional study

2021 ◽  
Vol 61 (1) ◽  
Author(s):  
Alexandre Moura dos Santos ◽  
Rafael Giovani Misse ◽  
Isabela Bruna Pires Borges ◽  
Bruno Gualano ◽  
Alexandre Wagner Silva de Souza ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Risk Factors ◽  
Muscle Strength ◽  
Aerobic Capacity ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Metabolic Equivalent ◽  
Handgrip Test

Abstract Background Modifiable cardiovascular risk factors (MCRFs), such as those related to aerobic capacity, muscle strength, physical activity, and body composition, have been poorly studied in Takayasu arteritis (TAK). Therefore, the aim of the study was to investigate MCRFs and their relationships with disease status and comorbidities among patients with TAK. Methods A multicenter cross-sectional study was conducted between 2019 and 2020, in which 20 adult women with TAK were compared with 16 healthy controls matched by gender, age, and body mass index. The following parameters were analyzed: aerobic capacity by cardiopulmonary test; muscle function by timed-stands test, timed up-and-go test, and handgrip test; muscle strength by one-repetition maximum test and handgrip test; body composition by densitometry; physical activity and metabolic equivalent by IPAQ, quality of life by HAQ and SF-36; disease activity by ITAS2010 and NIH score; and presence of comorbidities. Results Patients with TAK had a mean age of 41.5 (38.0–46.3) years, disease duration of 16.0 (9.5–20.0) years, and a mean BMI of 27.7±4.5 kg/m2. Three out of the 20 patients with TAK had active disease. Regarding comorbidities, 16 patients had systemic arterial hypertension, 11 had dyslipidemia, and two had type 2 diabetes mellitus, while the control group had no comorbidities. TAK had a significant reduction in aerobic capacity (absolute and relative VO2 peak), muscle strength in the lower limbs, increased visceral adipose tissue, waist-to-hip ratio, reduced walking capacity, decreased weekly metabolic equivalent, and quality of life (P< 0.05) as compared to controls. However, there were no correlations between these MCRFs parameters and disease activity. Conclusions TAK show impairment in MCRFs; therefore, strategies able to improve MCRF should be considered in this disease.

scholarly journals Methotrexate, blood pressure and markers of arterial function in patients with rheumatoid arthritis: a repeated cross-sectional study

2017 ◽  
Vol 9 (9) ◽  
pp. 213-229 ◽  
Author(s):  
Arduino A. Mangoni ◽  
Leena R. Baghdadi ◽  
E. Michael Shanahan ◽  
Michael D. Wiese ◽  
Sara Tommasi ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Blood Pressure ◽  
Cardiovascular Risk ◽  
Disease Activity Score ◽  
Augmentation Index ◽  
Cross Sectional Study ◽  
Joint Disease ◽  
Group Differences ◽  
Cross Sectional ◽  
Arterial Function

Background: Methotrexate (MTX) treatment in rheumatoid arthritis (RA) has been associated with lower cardiovascular risk compared to other disease-modifying antirheumatic drugs (DMARDs). We sought to identify whether the MTX-associated cardioprotection involves changes in blood pressure (BP) and/or arterial function. Methods: Clinic and 24-hour peripheral and central systolic and diastolic BP (SBP and DBP), augmentation index (AIx), pulse wave velocity (PWV) and plasma asymmetric dimethylarginine (ADMA) were assessed in RA patients on stable treatment with either MTX ± other DMARDs (MTX group, n = 56, age 61 ± 13 years, 70% females) or other DMARDs (non-MTX group, n = 30, age 63 ± 12 years, 76% females). Measurements were performed at baseline and after 8 months. Results: After adjusting for visit, age, gender, body mass index, folic acid use and 28-joint disease activity score, the MTX group had significantly lower clinic peripheral SBP (−7.7 mmHg, 95% CI −13.2 to −2.3, p = 0.006) and DBP (−6.1 mmHg, 95% CI −9.8 to −2.4, p = 0.001) and clinic central SBP (−7.8 mmHg, 95% CI −13.1 to −2.6, p = 0.003) and DBP (−5.4 mmHg, 95% CI −9.1 to −1.6, p = 0.005) versus the non-MTX group. Furthermore, the MTX group had significantly lower 24-hour peripheral and central SBP and DBP and PWV versus the non-MTX group ( p < 0.01 for all comparisons). By contrast, there were no significant between-group differences in AIx and ADMA. Conclusions: RA patients on MTX treatment had significantly lower clinic and 24-hour peripheral and central BP compared to those who did not take MTX. The lower BP with MTX may be related to differences in PWV, but not in AIx or ADMA concentrations. Further longitudinal studies including randomized controlled trials are warranted to confirm these findings, to identify other possible mechanisms responsible for the effects of MTX on BP and PWV, and to establish whether these effects might account for the reduced cardiovascular risk with MTX.

scholarly journals Measures of Bioavailable Serum Testosterone and Estradiol and Their Relationships with Muscle Strength, Bone Density, and Body Composition in Elderly Men*

2000 ◽  
Vol 85 (9) ◽  
pp. 3276-3282 ◽  
Author(s):  
Annewieke W. van den Beld ◽  
Frank H. de Jong ◽  
Diederick E. Grobbee ◽  
Huibert A. P. Pols ◽  
Steven W. J. Lamberts
Keyword(s):  
Body Composition ◽  
Muscle Strength ◽  
Fat Mass ◽  
Cross Sectional Study ◽  
Positive Relation ◽  
Elderly Men ◽  
Cross Sectional ◽  
Healthy Elderly ◽  
Hip Bmd ◽  
Best Parameter

Abstract In the present cross-sectional study of 403 independently living elderly men, we tested the hypothesis that the decreases in bone mass, body composition, and muscle strength with age are related to the fall in circulating endogenous testosterone (T) and estrogen concentrations. We compared various measures of the level of bioactive androgen and estrogen to which tissues are exposed. After exclusion of subjects with severe mobility problems and signs of dementia, 403 healthy men (age, 73–94 yr) were randomly selected from a population-based sample. Total T (TT), free T (FT), estrone (E1), estradiol (E2), and sex hormone-binding globulin (SHBG) were determined by RIA. Levels of non-SHBG-bound T (non-SHBG-T), FT (calc-FT), the TT/SHBG ratio, non-SHBG-bound E2, and free E2 were calculated. Physical characteristics of aging included muscle strength measured using dynamometry, total body bone mineral density (BMD), hip BMD, and body composition, including lean mass and fat mass, measured by dual-energy x-ray absorptiometry. In this population of healthy elderly men, calc-FT, non-SHBG-T, E1, and E2 (total, free, and non-SHBG bound) decreased significantly with age. T (total and non-SHBG-T) was positively related with muscle strength and total body BMD (for non-SHBG-T, respectively, β = 1.93 ± 0.52, P &lt; 0.001 and β = 0.011 ± 0.002, P &lt; 0.001). An inverse association existed between T and fat mass (β = −0.53 ± 0.15, P &lt; 0.001). Non-SHBG-T and calc-FT were more strongly related to muscle strength, BMD, and fat mass than TT and were also significantly related to hip BMD. E1 and E2 were both positively, independently associated with BMD (for E2, β = 0.21 ± 0.08, P &lt; 0.01). Non-SHBG-bound E2 was slightly strongly related to BMD than total E2. The positive relation between T and BMD was independent of E2. E1 and E2 were not related with muscle strength or body composition. In summary, bioavailable T, E1, total E2, and bioavailable E2 all decrease with age in healthy old men. In this cross-sectional study in healthy elderly men, non-SHBG-bound T seems to be the best parameter for serum levels of bioactive T, which seems to play a direct role in the various physiological changes that occur during aging. A positive relation with muscle strength and BMD and a negative relation with fat mass was found. In addition, both serum E1 and E2 seem to play a role in the age-related bone loss in elderly men, although the cross-sectional nature of the study precludes a definitive conclusion. Non-SHBG-bound E2 seems to be the best parameter of serum bioactive E2 in describing its positive relation with BMD.

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