Age-related changes in the performance of forward reach

Lin, Sang-I; Liao, Chien-Fen

doi:10.1016/j.gaitpost.2010.09.013

Cited by 24 publications

(13 citation statements)

References 27 publications

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“…Reach distance, when defined as the distance the finger traveled while reaching forward, has been found to be shorter in older adults in previous studies (Duncan et al 1990;Intiso et al 2012). However, when reach distance was adjusted to the body height, the age differences were found to decrease (Isles, 2004;Lin and Liao 2011). In this study, for both FR and UR, there were no significant between-group differences in heightadjusted reach distances for both task conditions.…”

Section: Discussioncontrasting

confidence: 51%

“…The task of reaching forward primarily consists of counter-clockwise rotation of the body, including thorax and hip flexion, and some ankle plantarflexion that is associated with trunk forward movement (Lin and Liao 2011;Suttanon et al 2013). In this study, subjects went through a significantly smaller range of thorax and hip flexion, and their COM anterior and downward displacement was also smaller in UR.…”

Section: Discussionmentioning

confidence: 66%

“…Further studies are needed to address the above issues. Finally, the young and older subjects in this study differed significantly in their body height, a factor that could possibly affect reach performance (Isles et al 2004;Lin and Liao 2011). This study hence adjusted the reach distance to the body height.…”

Section: Discussionmentioning

confidence: 98%

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Reaching forward: effects of a preceding task and aging

Tsai

Lin

2015

AGE

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Forward reaching is an integral part of many essential daily activities. It is often performed while standing quietly or after standing up from a seated position. This study sought to determine how a preceding balance task and aging would affect the task performance and movement strategy. Twenty-two healthy young and 20 older adults participated in this study and performed forward reaching under two task conditions. In forward reach (FR), reaching was performed during quiet standing. In up-and-reach (UR), subjects stood up from a seated position and then reached forward. A motion analysis system was used to calculate the location of the center of mass (COM) and joint angles at the initial and final positions, and the finger, COM, and joint angular displacements during the reaching task. For both groups, UR was initiated in a more flexed posture and had a significantly shorter reach distance and greater ankle dorsiflexion angle, compared to FR. The location of the COM, however, did not differ between the two task conditions. Older adults were found to significantly slow down their downward and forward COM motions in UR but not young adults. These findings showed that a preceding balance task increased the task demand and required modifications in the movement strategy. For older adults, the impact of increased task demand was greater, and adopting a cautious strategy could help to complete the task safely.

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Section: Discussioncontrasting

confidence: 51%

Section: Discussionmentioning

confidence: 66%

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Reaching forward: effects of a preceding task and aging

Tsai

Lin

2015

AGE

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“…Major factors contributing to falls among the elderly are the reduced physiological capacity that occurs with aging and decreased balance [2][3][4]. Furthermore, the risk of falls among the elderly is affected by the interactions of the organism, environment, and task [5].…”

Section: Introductionmentioning

confidence: 99%

The effect of aging on vertical postural control during the forward and backward shift of the center of pressure

Kasahara

Saitô

Anjiki³

et al. 2015

Gait & Posture

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“…It is performed in multi directions as forward, backward and lateral reach. 8 During the task, one is required to move the body's center of mass toward the front, back or lateral edges of the base of support in a well-controlled manner. Therefore, it is often considered an indicator of boundary of stability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Milwaukee brace on static and dynamic balance of female hyperkyphotic adolescents

Eshraghi

Maroufi

Sanjari

et al. 2013

Prosthetics &Amp; Orthotics International

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Background: Biomechanical factors, such as spinal deformities can result in balance control disorders. Objectives: The purpose of this study was to examine the effect of bracing on static and dynamic balance control of hyperkyphotic female adolescents. Study Design: Clinical trial. Methods: A force platform was employed to record center of pressure (COP) parameters. Ten adolescents undergoing Milwaukee brace for hyperkyphosis and 14 normal subjects participated in the study. The COP data were collected with and without brace immediately on first day and after 120 days of continuous brace wear. Results: No significant difference was found in dynamic and static balance tests with and without brace on the first day (P > 0.05). After 120 days, the values of COP displacement in functional reach to the right and left for the hyperkyphotic adolescents when performing without brace enhanced significantly compared to the first day. The forward reach distance was not significantly different between the normal and hyperkyphotic subjects (P = 0.361); however, hyperkyphotic participants had significantly smaller reach distance in the functional reach to the right (21.88 vs. 25.56cm) and left (17.04 vs. 21.25cm). Conclusion: It might be concluded that bracing had a possible effect on improvement of dynamic balance performance, because the subjects could reach the target in dynamic reach tests with higher displacement in sagittal plane without losing their balance control. Clinical relevanceLittle is known about the biomechanical aspects of brace wear in individuals with hyperkyphosis. This study investigated balance differences between the healthy and hyperkyphotic individuals, and outcomes of Milwaukee brace wear. It might provide some new insight into the conservative treatment of hyperkyphosis for clinicians and researchers.

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Age-related changes in the performance of forward reach

Cited by 24 publications

References 27 publications

Reaching forward: effects of a preceding task and aging

Reaching forward: effects of a preceding task and aging

The effect of aging on vertical postural control during the forward and backward shift of the center of pressure

Effect of Milwaukee brace on static and dynamic balance of female hyperkyphotic adolescents

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