scholarly journals Empirical study of the 30-s chair-stand test as an indicator for musculoskeletal disorder risk of sedentary behaviour in Japanese office workers: a cross-sectional empirical study

2021 ◽  
pp. bmjnph-2020-000211
Author(s):  
Azusa Arimoto ◽  
Shoko Ishikawa ◽  
Etsuko Tadaka
Keyword(s):  
Muscle Strength ◽  
Sedentary Behaviour ◽  
Musculoskeletal Disorder ◽  
Quadriceps Muscle ◽  
Office Workers ◽  
Cross Sectional ◽  
Chair Stand ◽  
Quadriceps Muscle Strength ◽  
The Mean ◽  
Disorder Risk

ObjectivesSedentary behaviour among office workers and the risk of adverse health outcomes are public health problems. However, risk indicators for these outcomes require invasive biochemical examination. A proactive screening tool using a non-invasive, easy-to-use method is required to assess the risk focused on musculoskeletal health for primary prevention. However, middle-aged adults have insufficient awareness of musculoskeletal disorders. This study examined to determine whether the 30-s chair-stand test (CS-30) can be used as a proactive screening index for musculoskeletal disorder risk of sedentary behaviour in office workers.DesignCross-sectional study using self-administered questionnaires and physical measurements.SettingFour workplaces located in a metropolitan area of Japan.Participants431 Japanese office workers aged 20–64 years. 406 valid sets of results remained (valid response rate: 94.2%).Primary and secondary outcome measuresMusculoskeletal function was measured using the CS-30, quadriceps muscle strength. Receiver operating characteristic curve analysis was used to determine the sensitivity, specificity and optimal cut-off value for the CS-30. The risk of future incidence of musculoskeletal disorders was calculated using current quadriceps muscle strength.ResultsIn total participants, 47.0% were male and the mean sitting time in work duration was 455.6 min/day (SD=111.2 min). The mean lower limb quadriceps muscle strength was 444.8 N (SD=131.3 N). For the optimum cut-off value of 23 on the CS-30 for all participants, sensitivity was 0.809 and specificity was 0.231. For men, the optimum cut-off was 25, with a sensitivity of 0.855 and a specificity 0.172. For women, the optimum cut-off was 21, with a sensitivity of 0.854 and a specificity 0.275.ConclusionsSensitivity was high, but specificity was insufficient. The CS-30 may be a potential proactive screening index for musculoskeletal disorder risk of sedentary behaviour, in combination with other indicators.

scholarly journals The role of quadriceps muscle strength in the development of falls in the elderly people, a cross-sectional study

2018 ◽  
Vol 26 (1) ◽  
Author(s):  
Alijan Ahmadiahangar ◽  
Yahya Javadian ◽  
Mansour Babaei ◽  
Behzad Heidari ◽  
Seyedreza Hosseini ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Elderly People ◽  
The Elderly ◽  
Quadriceps Muscle ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Quadriceps Muscle Strength

scholarly journals Hip Abductor Strength Reliability and Association With Physical Function After Unilateral Total Knee Arthroplasty: A Cross-Sectional Study

2014 ◽  
Vol 94 (8) ◽  
pp. 1154-1162 ◽  
Author(s):  
Ali H. Alnahdi ◽  
Joseph A. Zeni ◽  
Lynn Snyder-Mackler
Keyword(s):  
Muscle Strength ◽  
Physical Function ◽  
Functional Limitations ◽  
Quadriceps Muscle ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Quadriceps Muscle Strength ◽  
Patient Reported ◽  
Hip Abductor ◽  
Abductor Strength

Background Because people with total knee arthroplasty (TKA) have persistent functional limitations and disability, identifying modifiable risk factors for persistent disability is warranted. Before surgery, people have pervasive lower extremity muscle weakness. The fact that hip abductor muscle strength is often not targeted in postoperative rehabilitation may contribute to functional limitations. Objective Study objectives were: (1) to examine the reliability of handheld dynamometry (HHD) for measuring hip abductor strength and (2) to determine whether hip abductor strength contributes to physical function beyond the contribution of quadriceps muscle strength. Design This was a cross-sectional study. Methods Two-hundred ten participants underwent quadriceps and hip abductor muscle strength testing and measurement of physical function (performance-based and self-reported outcomes). Correlation and regression equations were built to determine the relationships of strength, pain, and functional ability. A subset of 16 participants underwent hip abductor strength testing at 2 sessions to determine the reliability of the measure. Results Measuring hip abductor strength with HHD yielded excellent relative reliability, with an intraclass correlation coefficient (ICC [2,3]) of .95 and a 95% confidence interval of .86 to .98, but moderate absolute reliability, with a minimal detectable change (with 95% confidence) of 47.6 N and a 95% confidence interval of 35.5 to 76.5. Hip abductor strength made a significant additional contribution to performance-based measures of physical function after anthropometric covariates and quadriceps muscle strength were accounted for. Hip abductor strength did not show bivariate correlations with patient-reported measures of physical function and did not contribute to patient-reported physical function after covariates and quadriceps muscle strength were accounted for. Limitations A cause-and-effect relationship between hip abductor strength and physical function could not be established. Conclusions In people with unilateral TKA, HHD testing of hip abductor strength is reliable. Hip abductor strength contributes to performance-based but not patient-reported measures of physical function in people with unilateral TKA.

scholarly journals Comparison of Y-Balance Test Performance by maturation status in youth distance runners

2021 ◽  
Vol 9 (7_suppl3) ◽  
pp. 2325967121S0008
Author(s):  
Mitchell J. Rauh ◽  
Micah C. Garcia ◽  
David M. Bazett-Jones ◽  
Jason T. Long ◽  
Kevin R. Ford ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Quadriceps Muscle ◽  
Limb Length ◽  
Distance Running ◽  
Distance Runners ◽  
Long Distance ◽  
Balance Test ◽  
Convenience Sample ◽  
Quadriceps Muscle Strength ◽  
Increased Risk

Background: Distance running is a popular interscholastic sport, but also has an associated high risk of running-related injuries. Recent literature suggests that functional tests may help to identify athletes at increased risk of injury. The Y-Balance Test (YBT) is an objective measure used to assess functional muscle strength and balance and to expose asymmetries between tested limbs. Purpose: To determine if YBT performance was associated with maturation status in healthy, youth distance runners. We hypothesized that mid-pubertal (MP) runners would demonstrate less functional reach distance than pre-pubertal (PrP) or post-pubertal (PoP) runners. Methods: A convenience sample of 142 (Females: n=79, Males: n=63) uninjured youth runners (ages 13.5±2.7 years; weekly running distance: 18.2±20.4 km) were recruited from the local community. All runners met inclusion criteria, indicating that they were between 9 and 19 years old and participated in long-distance running activities such as school/club track and field, cross country, road races, trail running, and/or soccer. The runners completed a modified Pubertal Maturational Observation Scale (PMOS), then were screened for right (R) and left (L) anterior (ANT), posteromedial (PM) and posterolateral (PL) reach distances (cm) normalized by lower limb length (cm). Composite reach distance was calculated by the sum of the three reach distances divided by three times the limb length multiplied by 100 for R and L limbs. ANOVA with Bonferroni post hoc tests were used to compare maximum normalized reach distances for the three directions and composite reach distance by maturation status and sex. Results: Overall, 31.7% were classified as PrP status, 26.1% as MP, and 42.3% as PoP, with similar percentages by sex ( p=0.84). The only significant mean difference was found for R ANT maximum normalized reach distance between PrP and PoP ( p=0.02), indicating a greater normalized reach in PrP athletes. No significant mean differences were found for R or L PM and PL maximum normalized reach distances, or for R or L composite reach distances, by maturation status or when stratified by maturation and sex ( p>0.05). Conclusions: In this sample of youth runners, the YBT was only a discriminator of anterior reach distance between pre-pubertal and post-pubertal runners. As decreased anterior reach is associated with reduced quadriceps muscle strength and anterior knee pain, reduced anterior reach in post-pubertal runners may potentially signify an increased risk of sustaining a running-related injury. Thus, preventive efforts to ensure good functional quadriceps muscle strength may be merited.

scholarly journals A single whole body vibration session influences quadriceps muscle strength, functional mobility and balance of elderly with osteopenia and/or osteoporosis? Pragmatic clinical trial

2019 ◽  
Vol 18 (1) ◽  
pp. 73-80
Author(s):  
Luanda Alves Xavier Ramos ◽  
François Talles Medeiros Rodrigues ◽  
Lívia Shirahige ◽  
Maria de Fátima Alcântara Barros ◽  
Antônio Geraldo Cidrão de Carvalho ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Muscle Strength ◽  
Whole Body Vibration ◽  
Quadriceps Muscle ◽  
Functional Mobility ◽  
Whole Body ◽  
Pragmatic Clinical Trial ◽  
Body Vibration ◽  
Quadriceps Muscle Strength

Quadriceps muscle strength and its relationship to radiographic knee osteoarthritis in Japanese elderly

2013 ◽  
Vol 18 (4) ◽  
pp. 536-542 ◽  
Author(s):  
Go Omori ◽  
Yoshio Koga ◽  
Hiroshi Watanabe ◽  
Masaei Tanaka ◽  
Atsushi Nawata ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Knee Osteoarthritis ◽  
Quadriceps Muscle ◽  
Quadriceps Muscle Strength ◽  
Japanese Elderly ◽  
Radiographic Knee Osteoarthritis
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