Hello mhg1934-ga,
Thank you for your question.
I've organized a digest of links to articles and reports showing
clinical Studies regarding the effect of chair height on various
populations making the "Sit-To-Stand" transition.
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Determinants of the Sit-to-Stand Movement:
Research Report
Wim GM Janssen, Hans BJ Bussmann, and Henk J Stam
Physical Therapy Volume 82 • Number 9 • September 2002
Results:
“The literature indicates that chair seat height, use of armrests, and
foot position have a major influence on the ability to do an STS
movement.”
Journal of the Physical Therapy Association Website
http://www.ptjournal.org/PTJournal/Sep2002/v82n9p866.cfm
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Sit-To-Stand at Different Periods of Pregnancy:
Clinical Biomechanics
Volume 16, Issue 3, March 2001, Pages 194-198
Shu-Zon Loua, You-Li Chou, , a, Pei-Hsi Choub, Chii-Jeng Linc, Uyi-Chi
Chend and Fong-Chin Sua
Institute of Biomedical Engineering, National Cheng Kung University,
Objective: “This study was performed to determine the biomechanics of
chair rising by pregnant women.”
RESULTS: “The chair height has great influence on knee joint and hip
joint moments, but less on ankle joints. In the third trimester for
all chair heights, because of a marked increase in abdominal depth,
the maximum hip moment is significantly less than that in first
trimester, while the maximum knee moment is significantly larger.
Pregnant women in third trimester produced larger knee moment during
sit-to-stand transition from lower chair height.”
Science Direct Website
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T59-42G0KBX-3&_coverDate=03%2F31%2F2001&_alid=0&_rdoc=1&_fmt=summary&_orig=search&_qd=1&_cdi=4997&_sort=d&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=aacdbd3636427d7f6256c545c3cfc044
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When Older Adults Face The Chair-Rise Challenge. A Study Of Chair
Height Availability And Height-Modified Chair-Rise Performance In The
Elderly.
J Am Geriatr Soc 1993 Jan;41(1):6-10
Weiner DK, Long R, Hughes MA, Chandler J, Studenski S.
Center for the Study of Aging and Human Development, Duke University
Medical Center, Durham, NC 27710.
OBJECTIVE: “Define the range of community seating heights available
for use by older adults; test whether raising chair height by small
increments facilitates chair-rise performance; and heighten physician
and furniture industry awareness of discrepancies that may exist
between actual and acceptable chair heights for older adults.”
CONCLUSIONS: “Augmentation of seat height by small increments
facilitates chair rise performance.”
National Center for Biotechnology Information Website
http://www4.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8418126&form=6&db=m&Dopt=r
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The influence of chair height on lower limb mechanics during rising.
J Orthop Res 1989;7:266-71
Rodosky MW, Andriacchi TP, Andersson GB.
Department of Orthopedic Surgery, Rush-Presbyterian-St. Luke's Medical
Center, Chicago, IL 60612.
Excerpt:
“The mechanics of the lower limb were analyzed in young, adult normal
subjects when rising from a seated position. (..) “the maximum knee
flexion moments were found to be highly dependent on chair height and
nearly doubled from the highest to the lowest position.”
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=2918425&dopt=Abstract
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The effects of armrests and high seat heights on lower-limb joint load
and muscular activity during sitting and rising.
Ergonomics 1992 Nov;35(11):1377-91
Arborelius UP, Wretenberg P, Lindberg F.
Department of Anatomy, Karolinska Institute, Stockholm, Sweden.
(..)”nine healthy men rising from four different types of stools were
compared, (..)All subjects estimated the effort of rising from the
higher stand stool to be lower than from the lower stand stool or from
'ordinary' height without arm rests.”
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1425567&dopt=Abstract
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Sit to stand from progressively lower seat heights -- alterations in
angular velocity.
Schenkman M, Riley PO, Pieper C.
Center for the Study of Aging and Human Development, Duke University
Medical Center, Durham, NC, USA
Clin Biomech (Bristol, Avon) 1996 Apr;11(3):153-158
“This study investigates the influence of chair height on the dynamics
of sit-to-stand for two age groups. Eleven young (25-36 years) and 10
older (61-79 years) adults participated.”
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11415613&dopt=Abstract
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The relative importance of strength and balance in chair rise by
functionally impaired older individuals.
Schenkman M, Hughes MA, Samsa G, Studenski S.
Aging Center, Duke University Medical Center, Durham North Carolina
27710, USA.
J Am Geriatr Soc 1996 Dec;44(12):1441-6
PARTICIPANTS: “Fifty-eight men and women aged 66 to 96 (mean = 77)
with functional limitations.”
RESULTS: “With bivariate analysis, lower extremity strength
demonstrated relationships with the lowest chair height (r = -0.639)
and maximum vertical velocity of the COM (r = .389); functional reach
was associated with three variables (lowest chair height r = .374;
time to rise r = .297; and maximum horizontal velocity of the COM r =
.251).”
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8951313&dopt=Abstract
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Biomechanical analysis of effects of foot placement with varying chair
height on the motion of standing up.
Shoichi Kawagoe, Naoya Tajima, Etsuo Chosa
Department of Orthopaedic Surgery, Miyazaki Medical College, 5200
Kihara, Kiyotake, Miyazaki 889-1692, Japan
Abstract Volume 5 Issue 2 (2000) pp 124-133
“The motions required to stand up from chairs 30, 40, or 50 cm in
height were analyzed with anterior, vertical, and posterior foot
placement.”
Journal of Orthopaedic Science Website
http://link.springer-ny.com/link/service/journals/00776/bibs/0005002/00050124.htm
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Chair design affects how older adults rise from a chair.
Alexander NB, Koester DJ, Grunawalt JA.
J Am Geriatr Soc 1996 Apr;44(4):356-62
OBJECTIVE: “To determine how modifications of key chair design
aspects, such as seat height, posterior seat tilt, backrest recline,
seat compressibility, and armrest placement, affect how older adults
rise from a chair and the seating comfort they experience.”
CONCLUSIONS: “Aspects of chair design such as lowered seat height,
increased posterior seat tilt, increased back recline, and increased
compressibility interfere with chair egress in older adults.”
Division of Geriatric Medicine, Department of Internal Medicine,
University of Michigan, Ann Arbor 48109, USA.
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8636577&dopt=Abstract
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Research (Complete Report)
Age- and Gender-Related Test Performance in Community-Dwelling Elderly
People: Six-Minute Walk Test, Berg Balance Scale, Timed Up & Go Test,
and Gait Speeds
Teresa M Steffen, Timothy A Hacker, and Louise Mollinger
Journal of the Physical Therapy Association Website
http://www.ptjournal.org/PTJournal/February2002/ad020200128p.pdf
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Chair and bed rise performance in ADL-impaired congregate housing
residents.
Alexander NB, Galecki AT, Nyquist LV, Hofmeyer MR, Grunawalt JC,
Grenier ML, Medell JL.
J Am Geriatr Soc 2000 May; 48(5):526-33
Geriatric Research, Education and Clinical Center, Department of
Veterans Affairs Medical Center, Ann Arbor, Michigan 48109-0926, USA.
“Chair seat heights were adjusted according to the percent of the
distance between the floor and the knee (% FK), and included rises (1)
with hands and then without hands at 140, 120, 100, and
80%.(..)RESULTS: The median total number of tasks successfully
completed was 18 (range, 3-21). Nearly all subjects were able to rise
from positions where the starting surface was elevated as long as hand
use was unlimited.”
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10811546&dopt=Abstract
======================================================================
J Orthop Res 1989;7(2):266-71
The influence of chair height on lower limb mechanics during rising.
Rodosky MW, Andriacchi TP, Andersson GB.
Department of Orthopedic Surgery, Rush-Presbyterian-St. Luke's Medical
Center, Chicago, IL 60612.
“The magnitude of the maximum flexion moment at the hip was not
substantially influenced by chair height, changing by less than 12%
between the highest and lowest chair heights. Conversely, the maximum
knee flexion moments were found to be highly dependent on chair height
and nearly doubled from the highest to the lowest position.”
National Center for Biotechnology Information Website
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=2918425&dopt=Abstract
======================================================================
Chair rise strategy in the functionally impaired elderly.
Hughes MA, Schenkman ML.
J Rehabil Res Dev 1996 Oct;33(4):409-12
Center on Aging, University of Kansas Medical Center, Kansas City
66160, USA.
“For the young and the healthy elderly, modification of these
strategies with decreased chair height has been examined. This study
examined the changes in chair rise strategy in 18 moderately
functionally impaired elderly as the difficulty with rising was
increased.”
National Center for Biotechnology Information Website
http://www4.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8895136&form=6&db=m&Dopt=r
======================================================================
When older adults face the chair-rise challenge. A study of chair
height availability and height-modified chair-rise performance in the
elderly.
Weiner DK, Long R, Hughes MA, Chandler J, Studenski S. J Am Geriatr
Soc 1993 Jan;41(1):6-10
OBJECTIVE: “Define the range of community seating heights available
for use by older adults; test whether raising chair height by small
increments facilitates chair-rise performance; and heighten physician
and furniture industry awareness of discrepancies that may exist
between actual and acceptable chair heights for older adults.”
National Center for Biotechnology Information Website
http://www4.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8418126&form=6&db=m&Dopt=r
======================================================================
Additional information that may interest you:
Lower Extremity Strength and Its Association with Physical Function
and Disability by Theodore James Hovda
A Thesis Submitted To The Graduate Faculty Of
Wake Forest University
A short excerpt from this ninety-five page thesis:
“We used a chair height of 16” in this study. This may have resulted
in a performance test that was not demanding enough to produce
significant relationships between lower extremity strength and chair
rise time. Other authors have reported that strength is closely
related to the minimum chair height from which an elderly individual
can successfully rise (46, 81). Thus, lowering the chair height could
increase the intensity of the test and may lead to a significant
correlation between strength and chair rise performance.”
Wake Forest University Website
http://etd.wfu.edu/theses/available/etd-06072002-141156/unrestricted/hovdatj_05_2002.pdf
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Search Criteria:
Clinical Studies the effect of chair height "Sit-To-Stand"
://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=Clinical+Studies+the+effect+of++chair+height+%22Sit%2DTo%2DStand%22
Clinical Studies affect of chair height on various populations
"Sit-To-Stand" transition
://www.google.com/search?hl=es&ie=UTF-8&oe=UTF-8&q=Clinical+Studies+affect+of+chair+height+on+various+populations+%22Sit-To-Stand%22+transition.&btnG=B%C3%BAsqueda+en+Google&lr=
Clinical Studies the effect of chair height "Sit-To-Stand" on
populations
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I hope you find this helpful.
Best Regards,
Bobbie7-ga |
