Anteroposterior displacement behavior of the center of pressure, without visual reference, in postmenopausal women with and without lumbar osteoporosis

Brech, Guilherme Carlos; Fonseca, Ângela Maggio da; Bagnoli, Vicente Renato; Baracat, Edmund Chada; Greve, Júlia Maria D’Andréa

doi:10.6061/clinics/2013(10)01

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…The arithmetic mean of the results was calculated from the three tests conducted under each condition and was processed using Balance Clinic ® software. The parameters used to measure the subjects’ stability when their eyes were open and closed were the mean square root of the displacement from the center of pressure (COP) in the mediolateral axis (XSD), the mean square root of the displacement from the COP in the anteroposterior axis (YSD), the mean velocity calculated from the total displacement of the COP in all directions (VAvg), and the total displacement area of the COP (Area95), as previously described 14,15.…”

Section: Methodsmentioning

confidence: 99%

Serum 25-hydroxyvitamin D levels are associated with functional capacity but not with postural balance in osteoporotic postmenopausal women

Brech¹,

Ciolac²,

Peterson³

et al. 2017

Clinics

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OBJECTIVES:In post-menopausal women with osteoporosis, insufficient vitamin D levels decrease calcium fixation in the bones and calcium transport in the sarcoplasmic reticulum, which impairs muscle strength, possibly leading to detrimental consequences for the preservation of functional capacity and postural balance, fall prevention, and fracture risk. The aim of this study was to evaluate the association between vitamin D levels and knee muscle strength, postural balance and functional mobility among postmenopausal women with osteoporosis.METHODS:This cross-sectional study included 63 osteoporotic older women (aged 60.6±3.1 years). The subjects completed the Timed Up and Go Test to measure functional mobility, and postural balance was assessed on the AccuSway Plus portable force platform. Maximal strength was tested using an isokinetic dynamometer for knee flexion and extension. The subjects were assessed as a group and were divided into quartiles according to their vitamin D levels. Clinicaltrials.gov: NCT02771834.RESULTS:Vitamin D status was independently associated with the normalized peak torque of the knee extensors (β=0.59; p=0.04) and Timed Up and Go Test (β=-0.07; p<0.001). No between-group differences were observed in the demographic and clinical variables or postural balance; however, significant differences were observed in the Timed Up and Go Test, and the group with the highest vitamin D levels exhibited better performance than the group with the lowest vitamin D levels (p<0.001).CONCLUSION:The serum vitamin D levels were independently associated with normalized knee extension strength and functional mobility in postmenopausal women with osteoporosis.

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Section: Methodsmentioning

confidence: 99%

Serum 25-hydroxyvitamin D levels are associated with functional capacity but not with postural balance in osteoporotic postmenopausal women

Brech¹,

Ciolac²,

Peterson³

et al. 2017

Clinics

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“…Loss of balance and increased body sway are important risk factors for falls in postmenopausal women. An evaluation of postural balance is essential to develop effective preventive actions regarding falls, as well as improvements in the quality of life of these women ( 35 ). The static condition refers to balance under unperturbed environments such as quiet standing ( 36 ), and in the present study, a stabilometric platform was used to objectively assess static postural control, which is considered to be the gold standard for assessing postural balance ( 37 ).…”

Section: Discussionmentioning

confidence: 99%

Qigong for Muscle Strength and Static Postural Control in Middle-Aged and Older Postmenopausal Women: A Randomized Controlled Trial

et al. 2021

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In the present study, we aimed to determine the effects of a Qigong exercise program on the muscle strength and postural control in middle-aged and older postmenopausal women. This is a randomized clinical trial (https://clinicaltrials.gov/ct2/show/NCT03989453) conducted on 125 women who were initially assigned to either an experimental group (n = 63) that performed a Qigong exercise program for 12 weeks or to a control group (n = 62) that did not receive any intervention. Muscle strength (dynamometer) and postural control (stabilometric platform) were evaluated before and immediately after an intervention period. The main findings of this study suggest that the women in the experimental group had improvements in muscle strength, mean velocity of the displacement of the center of pressure (CoP) with both eyes open and closed, and the surface sway area covered by the CoP, as well as the mediolateral and anteroposterior oscillations of the CoP, only with eyes open. The results of the present study determined that a 12 week Qigong exercise program has beneficial effects on muscle strength and postural control of middle-aged and older postmenopausal Spanish women.

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“…The clinical evaluation consisted of a structured questionnaire used by the multidisciplinary health team trained on assessing the risk factors for falls, and static posturography was also used in this study (25,26). The average length of each assessment was 2 hours, and the sociodemographic characteristics collected from the study sample included age, sex, race, educational level, marital status, and family income.…”

Section: Measurementsmentioning

confidence: 99%

“…The postural balance assessment (posturography) was performed on a portable force platform (AccuSway Plus s , AMTI1, MA, USA) (25,26). The data were collected and stored using the Balance Clinic software, configured to a frequency of 100 Hz with a cutoff frequency of 10 Hz.…”

Section: Measurementsmentioning

confidence: 99%

Posturographic measures did not improve the predictive power to identify recurrent falls in community-dwelling elderly fallers

Cabral¹,

Brech²,

Alonso³

et al. 2020

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OBJECTIVE:This study aimed to evaluate if posturography can be considered a recurrent fall predictor in elderly individuals. METHODS: This was a cross-sectional study. A total of 124 subjects aged 60 to 88 years were evaluated and divided into two groups-the recurrent fallers (89) and single fallers (35) groups. Patients' sociodemographic characteristics were assessed, and clinical testing was performed. The functional test assessment instruments used were timed up and go test (TUGT), Berg Balance Scale (BBS), five times sit-to-stand test, and Falls Efficacy Scale (to measure fear of falling). Static posturography was performed in a force platform in the following three different situations-eyes open (EO), eyes closed (EC), and EO dual task. RESULTS: There were significant differences between the single and recurrent fallers groups regarding the fear of falling, the Geriatric Depression Scale score, the mean speed calculated from the total displacement of the center point of pressure (COP) in all directions with EO, and the root mean square of the displacement from the COP in the mediolateral axis with EC. Based on the hierarchical logistic regression model, none of the studied posturographic variables was capable of significantly increasing the power of differentiation between the recurrent and single fallers groups. Only TUGT with a cognitive distractor (po0.05) and the BBS (po0.01) presented with significant independent predictive power. CONCLUSION: TUGT with a cognitive distractor and the BBS were considered recurrent fall predictors in elderly fallers.

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Anteroposterior displacement behavior of the center of pressure, without visual reference, in postmenopausal women with and without lumbar osteoporosis

Cited by 10 publications

References 30 publications

Serum 25-hydroxyvitamin D levels are associated with functional capacity but not with postural balance in osteoporotic postmenopausal women

Serum 25-hydroxyvitamin D levels are associated with functional capacity but not with postural balance in osteoporotic postmenopausal women

Qigong for Muscle Strength and Static Postural Control in Middle-Aged and Older Postmenopausal Women: A Randomized Controlled Trial

Posturographic measures did not improve the predictive power to identify recurrent falls in community-dwelling elderly fallers

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