Sit to stand in elderly fallers vs non-fallers: new insights from force platform and electromyography data

Chorin, Frédéric; Cornu, Christophe; Beaune, Bruno; Frère, Julien; Rahmani, Abderrahmane

doi:10.1007/s40520-015-0486-1

Cited by 46 publications

(38 citation statements)

References 38 publications

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“…On the other hand, it is also possible that visual assessment of the initiation of SS may have introduced a bias: future studies need to adequately synchronize testers to eliminate any such fault. In contrast, the longer time needed for the elderly to achieve peak vertical GRF may indicate either a slower reactive strategy or global muscle weakness: these issues are coherent with previous studies which highlighted how impaired muscles and muscle fatigue can influence performance in the elderly [41,42]. Further, this fact seems to confirm the importance of advising elderly people to perform muscle strength training of the lower limbs, especially the gluteus maximus, quadriceps and other antigravity muscles, in order to best maintain functional independence.…”

Section: Discussionsupporting

confidence: 84%

Raising and stabilization phase of the sit-to-stand movement better discriminate healthy elderly adults from young subjects: a pilot cross-sectional study

Piano

Geri²,

Testa³

2020

Arch Physiother

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Background:The sit-to-stand (STS) test is usually included in the clinical assessment of balance and its instrumented analysis may support clinicians in objectively assessing the risk of falling. The aim of the present study was to assess if kinetic parameters of STS collected using a force platform, with particular focus on the raising and stabilization phase, could discriminate between young and older adults. Methods: Twenty-four adults (age ranging from 18 to 65 years old) and 28 elderly adults (older than 65 years old) performed STS on a force platform. Data on ground reaction forces, sway, displacement and velocity of the center of pressure were gathered during the raising and the stabilization phases. Results: elderly subjects showed significant greater global sway (146.97 vs 119.85; p < 0.05) and a higher velocity (vs 40.03 vs 34.35 mm/s; p < 0.05) of execution of STS. Between-group comparisons highlighted a greater postural sway in the raising phase (21.63 vs 13.58; p < 0.001) and a doubled sway during the stabilization phase (12.38 vs 4.98; p < 0.001).Conclusions: The analysis of STS performed on a force platform provides further information about the age-specific pattern of STS execution. The stabilization phase of STS seems to be the more challenging for functional independent older adults and should be considered during balance assessment. Further studies are needed to confirm findings and improve generalizability of this study.

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Section: Discussionsupporting

confidence: 84%

Raising and stabilization phase of the sit-to-stand movement better discriminate healthy elderly adults from young subjects: a pilot cross-sectional study

Piano

Geri²,

Testa³

2020

Arch Physiother

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“…Moreover, after specific strength training, improvement in performance was more marked in 30sec-STST (P < 0.001) than in 1min-STST (P < 0.005) [20]. Postural control is another aspect explored by the STST that influences the recorded performance [38]. In elderly persons, whose balance system is impaired, STST strongly predicts fall risk and functional dependence.…”

Section: Stst As Compared With Other Functional Tests In Copdmentioning

confidence: 98%

Sit-to-stand tests for COPD: A literature review

Vaidya

Chambellan

Bisschop

2017

Respiratory Medicine

106

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Background: Sit-to-stand tests (STST) have recently been developed as easy-to-use field tests to evaluate exercise tolerance in COPD patients. As several modalities of the test exist, this review presents a synthesis of the advantages and limitations of these tools with the objective of helping health professionals to identify the STST modality most appropriate for their patients. Method: Seventeen original articles dealing with STST in COPD patients have been identified and analysed including eleven on 1min-STST and four other versions of the test (ranging from 5 to 10 repetitions and from 30 s to 3 min). In these studies the results obtained in sit-to-stand tests and the recorded physiological variables have been correlated with the results reported in other functional tests. Results: A good set of correlations was achieved between STST performances and the results reported in other functional tests, as well as quality of life scores and prognostic index. According to the different STST versions the processes involved in performance are different and consistent with more or less pronounced associations with various physical qualities. These tests are easy to use in a home environment, with excellent metrological properties and responsiveness to pulmonary rehabilitation, even though repetition of the same movement remains a fragmented and restrictive approach to overall physical evaluation. Conclusions: The STST appears to be a relevant and valid tool to assess functional status in COPD patients. While all versions of STST have been tested in COPD patients, they should not be considered as equivalent or interchangeable.

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“…influence STS performance [ 10 ]. Consequently, many studies have attempted to gain insight into the STS movement through biomechanical analyses with various systems such as force plates, combined with or without optoelectronic systems [ 8 , 11 , 12 , 13 , 14 , 15 ], video analysis [ 16 ], goniometry [ 17 , 18 ], and more recently accelerometry [ 15 , 19 , 20 , 21 ]. The recent technological progress involving wearable sensors allows for a more comprehensive analysis of the biomechanical kinematic variables of STS in clinical settings [ 22 ], which could be used in place of expensive and time-consuming biomechanical laboratory evaluations [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Sit-To-Stand Movement Evaluated Using an Inertial Measurement Unit Embedded in Smart Glasses—A Validation Study

Hellec

Chorin

Castagnetti³

et al. 2020

Sensors

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Wearable sensors have recently been used to evaluate biomechanical parameters of everyday movements, but few have been located at the head level. This study investigated the relative and absolute reliability (intra- and inter-session) and concurrent validity of an inertial measurement unit (IMU) embedded in smart eyeglasses during sit-to-stand (STS) movements for the measurement of maximal acceleration of the head. Reliability and concurrent validity were investigated in nineteen young and healthy participants by comparing the acceleration values of the glasses’ IMU to an optoelectronic system. Sit-to-stand movements were performed in laboratory conditions using standardized tests. Participants wore the smart glasses and completed two testing sessions with STS movements performed at two speeds (slow and comfortable) under two different conditions (with and without a cervical collar). Both the vertical and anteroposterior acceleration values were collected and analyzed. The use of the cervical collar did not significantly influence the results obtained. The relative reliability intra- and inter-session was good to excellent (i.e., intraclass correlation coefficients were between 0.78 and 0.91) and excellent absolute reliability (i.e., standard error of the measurement lower than 10% of the average test or retest value) was observed for the glasses, especially for the vertical axis. Whatever the testing sessions in all conditions, significant correlations (p < 0.001) were found for the acceleration values recorded either in the vertical axis and in the anteroposterior axis between the glasses and the optoelectronic system. Concurrent validity between the glasses and the optoelectronic system was observed. Our observations indicate that the IMU embedded in smart glasses is accurate to measure vertical acceleration during STS movements. Further studies should investigate the use of these smart glasses to assess the STS movement in unstandardized settings (i.e., clinical and/or home) and to report vertical acceleration values in an elderly population of fallers and non-fallers.

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Sit to stand in elderly fallers vs non-fallers: new insights from force platform and electromyography data

Cited by 46 publications

References 38 publications

Raising and stabilization phase of the sit-to-stand movement better discriminate healthy elderly adults from young subjects: a pilot cross-sectional study

Raising and stabilization phase of the sit-to-stand movement better discriminate healthy elderly adults from young subjects: a pilot cross-sectional study

Sit-to-stand tests for COPD: A literature review

Sit-To-Stand Movement Evaluated Using an Inertial Measurement Unit Embedded in Smart Glasses—A Validation Study

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