reflexes
DESCRIPTION
ReflexesTRANSCRIPT
CHAPTER 25: Evatuation of Performance Skitts and Ctient Factors 3g7
htex/Reaction AgeRange Test Position Stimulus Response
-'=, sfpnninn- ---TT J Birth-3 months
: r'eflex Birth-3 to 4 months
-q reaction Birth-z months
Supported in uprightposition with some
weight bearing on feet
Any-usuatly supine
Sitting or supine
Lean client forward; pressure
of feet on supportingsu rfa ce
Pressure in palm of hand orutnar side
Brush dorsum of one ofctient's hands againstunder edge of a table oredge of a stiff cardboaro
Stimulation to tips. gums, orfront of tongue
Touch or stroke outward oncorner of [ips or on cheek
Rhythmic, atternatingsteppi ng
Flexing of fingers; graspingof ctimrlrrc nhieet
Flexion of arm withptacement of the hand ontabtetop
Sucking, swallowing motions
Lower Lip, tongue, and
head move towardstim utus
..'rg reflex
.:'rg reflex
Birth-2 months
Birth-4 months
Any
Any
:a from Mathiowetz and Bass Haugen (1995); Barnes, CrutchfieLd, Heriza (19g2).
-:-E 25-1.3. AUTOMATIC MOVEMENT REFI-EXESO
leflex Age Range Test Position Stimutus Response
reflex
.:-:au reflex
:,:ective..itensor thrust
Birth-5 months SemirecLining or supine
4-12 to 24 months Prone. suspended in space
with support underchest
6 months-death Sitting or prone
Dropping head backwardfrom semisittjng positionor [oud noise near the head
Passive or active neck extension
Disptace body forward. sidewaysand backward (separateLy)
Extension or flexion and
abduction of arms--t -^-^^l:-^ ^fdru 5Prtrouril9 ul
fi ngers
Back and Legs extend
Protective extension oflimb to protecthead
lata from Mathiowetz and Bass Haugen (1995); Barnes, Crutchfield, Heriza (1982).
:3IE 25_14. SPINAL-LEVEL REFLEXES
leflex Age Range Test Position Stimutus Response
-.:x0r
,,r'ithdrawaI
1':ensor:h rust
. -ossed
extension
Birth-2 months
Birth-2 months
Birth-2 months
Stimutation to so[e
of foot
Pressure to batl of footof flexed leg
Passively flexextended Leg
Uncontrolled fLexion
of stimutated leg
Uncontrolled extensionof stimutated [eg
Extension of oppositeLeg, with hip internaIrotation and
adduction
Supine or sitting w'ith head jn
midposition, legs extended
Supine or sitting with head jn
midposition; one leg is in extensionand other is futly flexed
Supine with head in midposition; one
leg is in extension and other isfutly flexed
Data from Mathiowetz and Bass Haugen (1995); Barnes, Crutchfietd. Heriza (1982).
388 UNIT SEVEN: OccupationaL Therapy Eva[uation
TABLE 25_1"5. BRAINSTEM.LEVEL REFLEXESO
Reftex Age Range Test Position Stimulus Response
Asymmetricat tonic Bjrth-4 to 6 months
neck reftex(ATNR)
SymmetricaI tonicneck reflex(sTNR)
Tonic Labyrinthine
reflex (TLR)
TLR supine
Posjtive supportingreaction
Birth-4 to 6 months
Supine or sitting,with arms and Legs
extended; clientswith minimalreflexes responses
can be tested inquadruped
Sitting or quadruped
Prone with head
in midposition
Supine with head inmidposition
Standing, supine, or
sitti n g
Passivety or activeLy
turn the head 90o
to one side
i/ 1\ Fiov e liant'< hord\'/ ' '""and bring chjn toward
chest; (2) extend
client's head
Test position is
sti m u lus
Test position is
sti m u Ius
Firmty contact batl offoot to ftoor; or
footboard of bed and
dorsiflex foot
Resist any motion orhave clientqflroeTc:n nhicrt
with unaffectednan0
Increase of extensor tone of
limbs on face side and
ftexor tone of limbs on
skut[ side
(1) Ftexion of upper extremitie:and extension of lowerextremity; (2) extension of
upper extremitjes and flexic-of lower extremities
FLexion of extremities or
increase in f[exor tone
Extension of extremities or
increase in extensor tone
Rigid extension of lower
extremity owing toco-contraction of ftexors an:
extensors of knee and hiP
joints
Motion used as a stimuluswitt be mimicked by
other hand
Birth-4 to 6 months
Birth-4 to 6 months
Birth-4 to 6 months
Associated
reactions
Assocjated movements Any position
are normal throughoutlife when attemptingstrenuous actjvities;associated reactions
are stereotyped tonicreactions by which one
extremity inftuencesnncfrrra nf rnnfhprHvJrer v
extremity
oData from lvlathiowetz and Bass Haugen (1995); Barnes, Crutchfie[d, Heriza (1982).
TABLE 25_1.6. MIDBRAIN.LEVEL REACTIONS'
Reaction Age Range Test Position Stimulus Response
Neck righting Birth-6 months
Labyrinthine 2 months-deathrighting actingon head
Body righting 6 months-5 Years
acting on head
Supine with arms and
legs extended
Prone, supine, or
vertical positionsin cnero. rlipni'c
vision is occtuded
Ctient is btindfoldedprone and supine
Supine with arms and
legs extended
Passively turn head toone side and hotd itthere
Prone or supine positions
are test stimuli, or invertjcaI position body is
tilted lateral.ty
Asymmetric stimutation ofpressure sense organS 0n
anterior of body surface
Passively or actively turnhead to one side
Body rotates as a
whole in d'irection towhich head was turned
Head seeks verticalposition in space
Head js brought into a face-vertjcalposition that orients it tosurface with which cuent is inc0ntacr
Segmental rotatjon around bodY
axis toward direction of headBody righting
0n Dooy
6-18 months
oData from Mathiowetz and Bass Haugen (1995); Barnes, Crutchfietd, Heriza (1982)
CHAPTER 25: EvaLuation of Performance SkiLl.s and Client Factors
25-1.7 . CORTICAL REACTTONS'
Age Range Test Position Stimulus Response
:*. -;hting 2 months-death
.. :^um Depends on
. ' -:'on test position;throughout Life
Prone or supine on a rajsed mat
sitting with head LateraLLy flexed;
eyes open
Supine (7-B months); prone (5 months);quadruped (9-12 months); sittjng(O months); kneet-standing(15 months); standing (15 months)
Position of head inrelation to Landmarks
in space
Rocking client or
supporting surface
sufficientty todisturb ba[ance
Head is raised uprightin space
Automatic movements
to maintain baLance,
right head and body;nrnfortivo roaefinnc
. from Mathiowetz and Bass Haugen (1995); Barnes, CrutchfieLd, Heriza (1982).
-l
r :'-.rln.srem-leuel reflexes: Static, postural re{lexes that
-.rlrse a change in muscle tone throughout the body in:.:ponse to a change of tl-re head's position in space or
.:'r relation to the bocly, which activates the vestibular:', Steirri the changed tone is maintained as long as the:irmlrlus is present (Table 25-15).
t '1.[itlbrain-Leue| reactictns: Permit the develttpmeut ,-,i
:'.lzrtlrrationally acquirecl motor milestones; righting re-
i.tions are integrated at this level and interact with.r-Le another to effect tl-re normal head-to-body relir-
ir,)n in space and to each other (Table 75'16).
. --orrlcal reactic,ns: The result of the ef{icient interac-iLtrfl of the cerebral cortex, basal ganglia, and cere-
l-,elLum (equilibrium reactions occur when muscle
.one is norrnalizecl; enable the adaptatittn to changes
:n the body's center of gravity; and involve the inte-:ration of vestibular, visual, ancl tactile inpr-rts)
rTable 25-17).
i:cording Results-,. :ositicrn(s) should be noted. Results ale usual recor.led
*'hether the client's response is positive or negative.
::1sity (i.e., the speecl of response and degree of change).ell as quality (i.e., which components .rf the response
-. :resent uncler u,hich conditions) of responses should be
- - rmented.
-.terpreting Results
- -rlatory reflexive reslonses, such irs domination of a pos-' .,rl reflex, indicates severe central nervous system abnor-' -.-rt1'. Disturbance of higher-integrating centers manifests- evidence of a reflex, bltt not complete domination--r.rstonucci, 1997; Mathiowetz & Bass Har-rgen, 2002).
: : cxampie, a lr'eak reflex response ''vould be tonal changes
:' rhe extremities as opposed to actuai movement. This' r,-iLcl not be confused with tonal changes in a stimulus-
.-rtral condition. Problems with reflex lntegration result
:- lecreased trunk segmentation, ability to perform isolated
.. rvenent, adaptation of rnuscles tct postural change, and
function of antigravity mr-rsclcs antl incleaseLl s\-tl.:rgi.tlcmovement. Forrnal ertal.uertior-t should aiu'ays be accotttf.,'t-
nied by observ:rtion of hor'v reflexes affect motor ancl frinc-
tional performance. For erample, a positive .ls)'tlltnctrtctonic neck reflex (ATNR) can interfere '"vith rolling fron-r
supine to prren., duc to scapular retractioll on thc skull'sideextremity (which prevents bringing that arm across) and an
extended arm on the face side.
=
= ENDURANCE
Endurance can be dehnecl as the abllity to srtstain a gii-en
activit)' over time. lt is reiirted to cardiopr,rlmonarl', biome-
chanical, and neuromuscular function (Asmussen, 1979;
Farber, 1991a, i991b; Lunsford, 1978;Trombiy & Podolski,
2002). Endurance is a measure of stanrina and litness and
can hc conrpromr.e.l hv irractrr'i11, ilnptrhilizdli"n' crr-diorespiratory cleconclitioning, muscular deconclitioning,and diminished flexibility. ErLclurance is relirted to intcnsitr',
duration, and frequency of activity. It can be reported as a
percentage of maximai heart rate, as a number of repef itions
over time, or as the amounl of time a contr:rction c:rn be
hel.1 (Tiombly & Podolski, 2002).
Cardiorespiratory Endurance
Carcliorespiratory endurance is dehned by tl-rc AnlericartColiege of Sports Medicine (199i) as "the abrLity' to per-
form large-muscle, dynamic, morlerate-to-1-righ intcnsityexercises for prolongecl periods" (p. 39). Cardit'reslirator)'endurance depends on the functiorral states of the respira-
tory, cardic',vascular, and n-iusculoskele t'.rl systems. Maximaloxygen uptake (VO2max) is a standald ineasure of c:rr-
ciiorespiratory endurance. It is a measure of the maxin-ral
amount of oxygen that a person can take in and .lispense
during exercise and is relatecl to a person's maximal meta-
bolic equivalent (MET) capacity. "One MET is equivalent
to an ox)rsen r-rptake oi 3.5 [millilitets per kllogram bodv
weight per minute]. It is conventional in exercise testinq tt'