Study on Reaction Time and Movement Time in Lower Extremity in the Elderly Who Have and Who Have not Fallen.

Tanaka, Yuji; Minejima, Takao; Yamanaka, Toshiaki; Inoue, Hiroshi; Tanaka, Mariko; Kawai, Hideo; Hayakawa, Yoichi

doi:10.1589/rika.16.167

Cited by 8 publications

(7 citation statements)

References 7 publications

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“…For Stimulation, the height of clearances was greatest for Eyes-closed, then Light, and finally Voluntary conditions, regardless of the presence of an obstacle; effect sizes were 0.43, 2.83, and 1.55 with an obstacle present, and 1.28, 3.99, and 1.16 without an obstacle present. discussion It is an important problem to assess how the elderly maintain ability for activities of daily living and quality of life during aging (Tanaka, et al, 2001). Maki and McIlroy (1997) described a "change in support" strategy as one of the strategies for avoiding falls.…”

Section: Discussionmentioning

confidence: 99%

“…This strategy can be developed as a deliberate ap- proach useful in physical therapy. However, because such situations create risk by disturbing the body's balance, they tend to make elderly people uneasy (Tanaka, et al, 2001). This study examined stepping movements in response to three obstacle-avoidance tasks (Eyes-closed, Light, and Voluntary) using young healthy adults as participants to examine characteristics of the movements used to avoid falling.…”

Section: Discussionmentioning

confidence: 99%

“…When anticipating a fall, people typically prevent it by responding with a step reset (taking a step) or a jump reset (Hosoda, 1990). However, due to the delayed response time, the elderly often fall under conditions where younger people would not (Tanaka, Minejima, Yamanaka, Imaizumi, & Tanaka, 2001). A fall is defined as a knee or hand contacting the ground or a lower height regardless of intent.…”

mentioning

confidence: 99%

“…However, the methods used in previous studies were not necessarily adequate for elderly people with decreased leg strength, because of the added dangers of actually falling down completely when walking is disturbed by an obstacle. Tanaka, et al (2001) reported that the response time when participants step from a standing position in response to a light stimulation was longer for elderly people who had experience falling, shorter for elderly without such experience, and shorter still for young participants. Thus, it may be helpful to observe responses related to fall avoidance in response to disturbance stimulation.…”

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confidence: 99%

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Different Step-Over Movement Strategies for Disturbance Stimulations

Shin

Demura

2011

Percept Mot Skills

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This study examined differences in performance when 10 healthy adult participants took steps under three different disturbance stimulations (with opened and closed eyes and with the use of light), with and without an obstacle present. In the voluntary condition, participants recognized the obstacle beforehand and stepped over it quickly; in the light condition, participants recognized the obstacle beforehand and quickly stepped over it after light stimulation; in the closed eyes condition, participants did not recognize the obstacle beforehand, but after opening their eyes when hearing a sound, they quickly stepped over the obstacle. The swing time of the gait was significantly longer in obstacle conditions for all stimulations. The swing time was significantly longer under the closed eyes condition than the light and voluntary conditions. The clearances were significantly higher in order of the closed eyes, light, and voluntary conditions in the presence of an obstacle.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Different Step-Over Movement Strategies for Disturbance Stimulations

Shin

Demura

2011

Percept Mot Skills

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“…When people feel that they are falling, they generally try to regain their balance with a step reset (taking a step) or a jump reset (Hosoda, 2001). However, the elderly, as opposed to the young, often fall because of delayed response time (Tanaka et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Examination of the Usefulness of the Obstacle-Single Leg forward Step (OSFS) Test for Evaluating Fall Risk

Shin¹,

Demura²,

Sato³

2011

APE

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This study aimed to examine the usefulness of the Obstacle-Single leg forward step (OSFS) test for evaluating fall risk and fall-related physical fitness. One hundred and eighty four older women were divided into fallers (n = 47) who had a fall experience within the last year and non-fallers who had not (n = 137). In the OSFS test, they stepped forward over an obstacle and returned to their original position five times as quickly as possible. The OSFS test was also examined in the following divided phases: the OSFS-F phase in which participants stepped out and the OSFS-R phase in which they returned to the stepped leg. A mean time of five steps was used for analysis. In addition, the 10-meter walk and one leg standing with open eyes tests were conducted and the better times were used for analysis. The times of the non-fallers were shorter in the OSFS test, 10-meter walk time, and were longer in the one-leg standing time than those of the fallers (p-value: OSFS 0.025, 10-meter 0.046, One-leg standing time 0.028). A significant difference was found only in the OSFS-R, the non-fallers showed shorter time than the fallers (p-value: OSFS-F 0.354, OSFS-R 0.010). The OSFS test can discriminate the difference between fallers and non-fallers with the same accuracy as the 10-meter walk time and one-leg standing time tests.

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Split-belt controllable treadmill with differential velocity-based fall stimulation and motion analysis

Nakashima

Noutsuka

Fukui

et al. 2016

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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Amid trends toward aging populations in developed nations, the number of people requiring nursing care has increased markedly. Slips and falls during ordinary daily activities are a common cause of fractured bones and muscle injury. Several studies have analyzed the movements produced by artificially generated slip and fall stimuli, but few have investigated these stimuli. We analyzed lower-limb motion following a slip and fall stimulus produced using a pulled free-walking system consisting of a controllable split-belt treadmill, where a speed difference between the belts could be applied to produce a slipping motion. In three male participants, we established slip motion by applying acceleration in the sagittal plane direction of the right leg immediately upon contact with the treadmill. Each participant demonstrated a different recovery method from falling.

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Study on Reaction Time and Movement Time in Lower Extremity in the Elderly Who Have and Who Have not Fallen.

Cited by 8 publications

References 7 publications

Different Step-Over Movement Strategies for Disturbance Stimulations

Different Step-Over Movement Strategies for Disturbance Stimulations

Examination of the Usefulness of the Obstacle-Single Leg forward Step (OSFS) Test for Evaluating Fall Risk

Split-belt controllable treadmill with differential velocity-based fall stimulation and motion analysis

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