Persistence of primitive reflexes and associated motor problems in healthy preschool children

Abstract

Introduction
Retained primitive reflexes can disturb natural development and involve difficulties in social and educational children’s life. They can also impact on psychomotor development. Mature responses in a child’s psychomotor progress can only occur if the central nervous system itself has reached maturity. The process consist the transition made from brain stem reflex response to cortically controlled response. This study define the occurrence of primitive reflexes in healthy 4–6 years old children and analyze the impact of survived primitive reflexes on psychomotor development.

Material and methods
The study involved 35 participants aged 4–6 years healthy preschool children. The study tools were: primitive reflexes tests by Sally Goddard for children and Motor Proficiency – Test (MOT 4–6 test) in 18 tasks.

Results
Over a half (65%) preschool children had survived the primitive reflexes on the residual level. Eleven percent of them had no retained primitive reflexes. According to the psychomotor ability, 9% of the children were in the category of “altered development”, 29% in “delayed development”, 59% in “normal” and 3% in “very good development”. The greater the severity of the reflex, the motor efficiency was lower (p < 0.05).

Conclusions
It seems reasonable to introduce reflexes integration therapy in children’s with low psychomotor skills. Primitive reflexes routinely tested, can contribute to improved early psychomotor development in children with needs, thus preventing many difficulties which children can encounter within their social and school life.

Full text

Clinical research
Corresponding author:
Ewa Z. Gieysztor
Rehabilitation Developmental
Laboratory
Department of Physiotherapy
Faculty of Health Sciences
Medical University
of Wroclaw
2 Grunwaldzka St
50-355 Wroclaw, Poland
Phone: +48 507 011 369
E-mail: gieysztor.ewa@
gmail.com
1
Rehabilitation Developmental Laboratory, Department of Physiotherapy,
Faculty of Health Sciences, Medical University of Wroclaw, Wroclaw, Poland
2
Department of Physiotherapy, Faculty of Health Sciences, Medical University
of Wroclaw, Wroclaw, Poland
Submitted: 14 September 2015
Accepted: 24 December 2015
Arch Med Sci 2018; 14, 1: 167–173
DOI: 10.5114/aoms.2016.60503
Copyright © 2016 Termedia & Banach
Persistence of primitive reflexes and associated motor
problems in healthy preschool children
Ewa Z. Gieysztor1, Anna M. Choińska2, Małgorzata Paprocka-Borowicz1
Abstract
Introduction: Retained primitive reflexes can disturb natural development
and involve difficulties in social and educational children’s life. They can
also impact on psychomotor development. Mature responses in a child’s
psychomotor progress can only occur if the central nervous system itself
has reached maturity. The process consist the transition made from brain
stem reflex response to cortically controlled response. This study define the
occurrence of primitive reflexes in healthy 4–6 years old children and ana-
lyze the impact of survived primitive reflexes on psychomotor development.
Material and methods: The study involved 35 participants aged 4–6 years
healthy preschool children. The study tools were: primitive reflexes tests by
Sally Goddard for children and Motor Proficiency – Test (MOT 4–6 test) in
18 tasks.
Results: Over ahalf (65%) preschool children had survived the primitive
reflexes on the residual level. Eleven percent of them had no retained prim-
itive reflexes. According to the psychomotor ability, 9% of the children were
in the category of “altered development”, 29% in “delayed development”,
59% in “normal” and 3% in “very good development”. The greater the sever-
ity of the reflex, the motor efficiency was lower (p < 0.05).
Conclusions: It seems reasonable to introduce reflexes integration therapy
in children’s with low psychomotor skills. Primitive reflexes routinely tested,
can contribute to improved early psychomotor development in children with
needs, thus preventing many difficulties which children can encounter with-
in their social and school life.
Key words: primitive reflexes, preschool children, psychomotor
development, MOT 4–6.
Introduction
Primitive reflexes are automatic movement patterns that commence
during pregnancy and are fully present at birth in term infants. They
are natural reactions that start adevelopmental process which releases
aneural circuit for aspecific function. Primitive reflexes should integrate
and impede reflex reactions to allow development of natural motoric
action [1, 2]. Brain injury can cause reoccurring reflex reactions. They
can be observed in cerebral palsy patients or people who have suffered
astroke. There are many studies associated with the role of primitive
reflexes in development of cerebral palsy [3]. There are few studies about

Ewa Z. Gieysztor, Anna M. Choińska, Małgorzata Paprocka-Borowicz
168 Arch Med Sci 1, January / 2018
asymmetrical tonic neck reflex (ATNR), symmetri-
cal tonic neck reflex (STNR) or tonic labyrinthine
reflex (TLR) in the healthy population, and they are
mainly focused on adults [4, 5].
Primitive reflexes play a developmental role,
preparing the neonate to move against gravity,
gradually leading to voluntary movement by the
process of integration during the first months
of life. Mature responses in a child’s psychomo-
tor progress can only occur if the central nervous
system itself has reached maturity. The process
consists of the transition from abrain stem reflex
response to acortically controlled response [6]. If
the process has not progressed properly, the child
may demonstrate poor motor ability, which can
manifest itself in difficulties in running, cycling
and balance, and the child may be clumsy. There
may also be problems with throwing and catching,
and the child might avoid games involving phys-
ical movement. Psychomotor disturbances, also
known as minimal brain disorders, can modify and
hinder a child’s spontaneous development pro-
cess. The first signs can be seen in early childhood,
but many of them are seen later, i.e. learning and
behaviour difficulties during the pre-school years.
Reflex retention and academic or behaviour diffi-
culties experienced by children when they reach
school age may be linked [7–10].
The asymmetrical tonic neck reflex (ATNR),
symmetrical tonic neck reflex (STNR) and tonic
labyrinthine reflex (TLR), along with the plantar
reflex, palmar reflex, rooting reflex and spinal
Galant reflex, if retained, play agreat role in de-
creasing the brain’s ability and efficiency in pro-
cessing sensory information. The ATNR emerges
18 weeks in utero and diminishes completely
3–9 months after birth. The effect of the retained
ATNR can be poor eye tracking and difficulty
crossing the visual midline. The occurrence of the
reflex can cause difficulties in learning to read,
telling the time and left-right confusion as well.
In the posture we can observe spinal deformities
caused by the ATNR, which is not only ahealth
problem of the person but also represents ahigh
cost to society [3, 11].
The STNR emerges 6–9 months after birth
and integrates into the central nervous system
9–11 months after birth. The retained STNR can
be characterized by poor posture, poor eye-hand
co-ordination and focusing difficulties. Children
with aretained STNR may have problems with
sitting still at adesk or learning to swim, and
usually they do not feel comfortable with ball
games.
The TLR is areflex that emerges at birth and
disappears completely in 2–4 months after birth.
It results in poor balance, disorientation and prob-
lems with re-establishing the emotional and phys-
ical balance. The TLR can entail binocular vision
leading to a poor sense of timing and frequent
careless mistakes [8, 12].
Psychomotor development encompasses chan-
ging abilities from the beginning of life, from fe-
tal and neonatal periods through infancy and
childhood to adolescence. Estimating the degree
of psychomotor development can lead to finding
away of potential help for better growing up. It
can also indicate that achild has great potential
and requires a specific, individual program to
reach his/her full potential.
The aim of the study was to define the occur-
rence of primitive reflexes in healthy 4–6-year-old
children and analyse the impact of retained primi-
tive reflexes on psychomotor development.
Material and methods
Participants
The study was approved by the Medical Uni-
versity Ethical Committee. All the parents of the
subjects were kept informed of the purpose and
process of examination and subsequently gave
their written consent prior to the study.
The data were collected from 35 healthy chil-
dren aged 4 to 6 from aLower Silesia preschool
(Poland). The condition for exclusion was astate-
ment of special educational needs. The age,
height, weight, sex and body mass index (BMI)
from the examined children are shown in Table I.
Perinatal parameters such as Apgar score, birth
Table I. Subjects’ characteristics
Parameter Value
Age [years] 456
Number of subjects 15 15 5
Boys 592
Girls 10 6 3
Height, mean ± SD [m] 1.05 ±0.7 1.08 ±0.6 1.09 ±0.5
Weight, mean ± SD [kg] 16.3 ±1.63 17.3 ±2.87 20.3 ±2.21
BMI, mean ± SD [kg/m2]14.9 ±2.2 14.8 ±2.5 16.9 ±1.4

Persistence of primitive reflexes and associated motor problems in healthy preschool children
Arch Med Sci 1, January / 2018 169
weight, week of birth and kind of birth of each
participant are reported in Table II.
Each child was assessed individually by Primi-
tive Reflex Tests (ATNR, STNR, TLR) and by aMo-
tor Proficiency Test for children between 4 and
6 years (MOT 4–6).
Measurement of primitive reflexes
The asymmetrical tonic neck reflex test was
carried out in aquadruped position of the child
with shoulders and hips flexed to 90°, elbows ex-
tended, hands flat, fingers extended and head in
a neutral position. The examiner gently rotated
the head passively to the right laterally and held
for 5 s. The head was slowly rotated back to the
midline, and then the procedure was repeated for
the other side. This sequence was repeated four
times.
The ATNR was measured for the left (ATNR L)
and right (ATNR R) side.
The classification was made using afive-point
rating scale suggested by Goddard [12–14]:
0. No movement of the opposite arm, shoulder or
hip (no reflex occurs);
1. Slight deflection of the opposite arm or move-
ment of shoulder or hip (reflex present in
25%);
2. Clear deflection of the opposite arm with or
without involving the shoulder or hip (reflex
present in 50%);
3. Significant deflection of the opposite arm with
or without involving the shoulder or hip (reflex
present in 50%);
4. Descent of the opposite arm as aresult of rota-
tion of the head. Uncontrolled hip movement
can also occur (reflex survived in 100% on the
facial side).
The symmetrical tonic neck reflex test was car-
ried out in aquadruped position with the head pas-
sively bent and extended. The STNR was measured
for flexion (STNR FLX) and extension (STNR EXT).
The five-point rating scale for STNR was as fol-
lows:
0. No reaction;
1. Shaking of one or two arms or minimal move-
ment of the trunk;
2. Elbow movement and/or hips or bending of
the spine;
3. Deflection of the arms when lowering the
head and spontaneous straightening of the
hands when lifting the head;
4. Bending arms or going back to sitting on the
heels.
The tonic labyrinthine reflex was tested in
standing position, feet pushed together, hands
along the trunk. The child was asked to tilt the
head back “as if looking at the ceiling” and close
the eyes. The child was supported by the examin-
er. After 10 s the child was asked to bend the head
slowly “as if looking at the toes” and stand in the
position for 10 s. The movement was repeated
four times. The TLR was measured for flexion
(TLR FLX) and extension (TLR EXT).
Points were assigned as follows:
0. No reaction;
1. Minimal balance disturbances whilst changing
head position;
2. Balance disturbances during the test and/or
muscle tone change;
3. The child almost loses balance and/or shows
disorientation after the task;
4. Loss of balance and/or significant muscle tone
change whilst attempting balance stabilisa-
tion. Dizziness and nausea may occur.
The higher the children scored on the primitive
reflex test, the lower the integration they repre-
sented.
Measurement of psychomotor abilities
Children were also examined by the Motor Pro-
ficiency Test for children between 4 and 6 years
(MOT 4–6) [14]. The test includes 18 tasks. They
are divided into four areas: 1. Stability, 2. Loco-
motion, 3. Object control 4. Fine movement skills.
Tasks to perform by children are shown in Table III.
The tasks were classified on athree-point rat-
ing scale, where 0 means skill not mastered and
2 means skill mastered. All task scores were add-
ed up to generate ascore out of apossible total of
34. The higher the movement skill level, the high-
er the children scored in the MOT 4–6 assessment
protocol.
Statistical analysis
The statistical analysis was carried out us-
ing Statistica version 10.0. Descriptive statistics
Table II. Subjects’ characteristics
Parameter Value
Age [years] 456
APGAR, mean ± SD [points] 10 ±1 10 ±0 10 ±0
Birth weight, mean ± SD [g] 3522 ±465 3285 ±372 3310 ±371
Week of birth, mean ± SD 40 ±1.6 39 ±1.7 39 ±0.7
Natural childbirth/Caesarean section 80%/20% 73%/27% 80%/20%

Ewa Z. Gieysztor, Anna M. Choińska, Małgorzata Paprocka-Borowicz
170 Arch Med Sci 1, January / 2018
were computed for all variables. The results were
expressed as means ± standard deviations. Dif-
ferences between girls and boys and their body
parameters were tested by Student’s t-test. The
statistical evaluation was performed using Pear-
son’s correlation. All parameters were considered
statistically significantly different if p < 0.05.
Results
On the basis of the studies 11% of preschool
children have no retained primitive reflexes. At
least one of the retained reflexes from the studied
was detected in 89% of examined children, but
65% of the pre-schoolers have barely aresidual
degree of the reflex.
The most frequently occurring reflex (66% of
children) is the ATNR L, and the least frequently
occurring is the STNR FLX (34% of children), where
STNR FLX does not show presence of the maxi-
mum intensity in any of the children. The results in
percentages are shown in Figures 1 and 2.
The figures indicate that ATNR L performs at
the top of the point scale, appearing in 14% of
children. Successively, the highest numbers of
participants exhibited TLR EXT (12%) and ATNR R
(9%). Reflexes STNR EXT and TLR FLX are the
strongest in 6% of those studied.
The pre-schoolers’ best results in the MOT 4–6
test are shown in Figure 3.
The easiest task for children was 16, which was
completed by 94% of the surveyed children. Task
6 was completed by 6% of children; it proved to
be the most difficult. Task 8 was also difficult,
and 21% of children received 1 point for that task;
moreover, none of the children received a maxi-
mum point value for that task.
Table III. MOT 4–6 test – description of items
1. Forward jump in ahoop*
2. Forward balance
3. Placing dots on asheet
4. Grasping atissue with toes
5. Sideward jump
6. Catching astick
7. Carrying balls from box to box
8. Reverse balance
9. Throwing at atarget disk
10. Collecting matches
11. Passing through ahoop
12. Jumping in ahoop on 1 foot,
standing on 1 leg
13. Catching atennis ring
14. Jumping Jacks
15. Jumping over acord
16. Rolling around the long axis of the
body
17. Standing up holding aball on the head
18. Jump and turn in ahoop
*The first item not rated because it was use to accustom the child to the test situation.
ATNR L ATNR R STNR FLX STNR EXT TLR FLX TLR EXT
0 1 2
Figure 1. 0–2 points for primitive reflexes in group
Percent
80
60
40
20
0 ATNR L ATNR R STNR FLX STNR EXT TLR FLX TLR EXT
3 4
Figure 2. 3–4 points for primitive reflexes in group
Percent
15
10
5
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Task
2
Figure 3. Maximum points in MOT 4–6 test
33% 33%
48%
6%
15%
3% 6% 0
15%
55%
3%
27%
36% 36%
64%
94%
39%

Persistence of primitive reflexes and associated motor problems in healthy preschool children
Arch Med Sci 1, January / 2018 171
The data were compared between girls and boys.
63% of girls showed very good or normal develop-
ment. In the group of boys there was no one with
very good development, and 60% of boys were in
the normal development group. Similarly, in the level
of retained primitive reflexes, girls showed ahigh-
er degree of integration. Sixty-nine percent of girls
achieved good or complete integration (level none
and low), whereas 63% of boys achieved a sim-
ilar level of integration. Although examined girls
achieved abetter level of psychomotor development
and reflex integration than boys, there was no sig-
nificant difference between them (Figures 4 and 5).
Higher motor efficiency is due to lower severity
of the reflex.
Statistical analysis shows an inverse correlation
between the number of points in the test of reflex-
es and psychomotor efficiency at p < 0.05. Chil-
dren sufficiently motorized demonstrate afuller
integration of reflexes. MOT 4–6 tasks in general
are significantly correlated with the primitive re-
flexes total score (p < 0.05; R = –0.34).
Correlations between week of birth, prevalence of
reflexes and motoric skills were also studied. Chil-
dren born before term show ahigher level of non-in-
tegrated reflexes compared to children born at term.
They also have alower level of motoric skills.
Children were measured for weight and height,
and the body mass index (BMI) was calculated.
The results are: 40% of preschool children are in
the normal range, 34% are underweight, 11% are
overweight and 14% obese. There is no correlation
between birth weight, APGAR points, current BMI
and integration level of primitive reflexes or psy-
chomotor abilities.
Children rehabilitated in infancy by the Vojta
method stand out against the group with de-
creased motor performance and a higher rate
of occurrence of reflexes. Since there were only
2 people in the group, further groups should be
examined to determine the significance of the ob-
served phenomenon.
Discussion
Studies on primitive reflexes have been wide-
ly conducted on children with cerebral palsy [2].
The level of non-integrated reflexes in the group is
high and inadequate in comparison with healthy
children. There are few studies about the primi-
tive reflexes in healthy children; therefore we have
started to conduct them. The examined group in
the present study is different from those in the
available literature. The test group consisted of
healthy children, with no reported special needs.
However, the majority of children showed per-
sistent reflexes, and even marginally persistent
reflexes, as the study found, affect the psychomo-
tor development of children.
In our research over 60% of children demon-
strated at least one primitive reflex at level 1–2
and 25% of them at levels 3 and 4. It means that
most of the examined pre-school children have
non-integrated reflexes. This leads us to the con-
clusion that large scale testing should be con-
sidered, helping to conduct early therapy before
the disorders are revealed by the child’s inade-
quate behaviour at school age. Grzywniak [15]
conducted research comparing the level of prim-
itive reflexes in two groups of healthy school age
children, one from an orphanage and the second
one comprising children during therapy having
learning difficulties. Grzywniak noted that 55% of
healthy children had retained the primitive reflex-
es at levels 1 and 2. The research did not show
any children with reflexes at level 3 or 4. The re-
sults can be explained by higher age of examined
children and cannot be directly compared. The
difference noted above can encourage further re-
search on the dynamics of primitive reflexes in
healthy children.
Screening studies can help preschool chil-
dren with those difficulties by repeating mim-
ic movement patterns from the first year of life.
The therapy could involve movements based on
early brain development sequences. As a result,
children’s brains can have a“second chance” to
pass through the stages which have been missing
[16–19].
Bruijn et al. [5] studied whether the ATNR or
STNR can still appear in healthy adults. Ten sub-
jects were measured, and primitive reflexes were
found to exist in adults.
Accelerated Very good Normal Delayed Altered
development development development development development
MOT girls MOT boys
Figure 4. Psychomotor development level of girls
and boys
0%
58%
32%
5%
5%
0%
60%
27%
13%
0%
None Low Medium High Max
Primitive reflexes girls Primitive reflexes boys
Figure 5. Retained primitive reflexes level of girls
and boys
11%
26%
5% 0%
58%
13%
27%
13%
0%
53%

Ewa Z. Gieysztor, Anna M. Choińska, Małgorzata Paprocka-Borowicz
172 Arch Med Sci 1, January / 2018
Studies on motor abilities in children measured
by MOT 4–6 were conducted by Cools et al. [20].
The children’s MOT 4–6 mean performance in the
research was 19 (SD = 4.8) In our study mean
performance was 15 (SD = 4.7). Distribution of
children’s performance was as follows: over 4%
were classified in the category “altered develop-
ment”, nearly 19% in “delayed development”,
75% in “normal development”, about 1% in “very
good development” and none in “accelerated de-
velopment”. Our study showed almost the same
tendency. Nine percent of children were in the
category “altered development”, 29% in “delayed
development”, 59% in “normal” and 3% in “very
good development”. It shows that there were
more children under the normal range in our study
and slightly more above the normal range than in
Cools’ research. Nowak et al. has nearly the same
results. They show the need for stimulating 21%
of 4-year-old children [21, 22].
Our study shows that without training of prim-
itive reflexes integration, it may be impossible to
correct motoric functions and help clumsy chil-
dren to reach the degree of psychomotor level as
their compeers. In order to prevent psychomotor
delays of elder children, it is necessary to conduct
an examination of the degree of reflexes integra-
tion in pre-schoolers and, as aresult, if necessary,
apply reflex therapy. The tests are ahandy tool for
qualified physiotherapists or physicians, and thus
might be applied during standard periodical med-
ical evaluation of each child. If the staff know the
impact of the primitive reflexes on development
of healthy children, not only would they have
a faster reaction to their persistence, but they
could also prevent subsequent disorders.
For the examination, tests carried out in the
study can be used alternatively, with ahigh prob-
ability that the MOT 4–6 test results will indicate
not only the level of psychomotor efficiency but
also the reflexes integration degree. The use of re-
flex tests will allow determination of the degree of
psychomotor skills of ahealthy child. Additionally,
if performed at an early age, they will allow one to
adjust the treatment according to the true source
of disorders, not just the results.
We observed asignificant correlation between
the psychomotor test MOT 4–6 and primitive re-
flexes test. The study shows the necessity to eval-
uate children thoroughly in order to identify the
causes of children’s motoric problems in the brain
immaturity rather than focusing on symptoms.
The failure to perform integration of the reflexes
may cause difficulties for the children to achieve
proper motor skills for their age. Treatment should
at first concern the root of the problem, not only
the symptoms; thus training should concentrate
on reflexes, and after that abilities such as bal-
ance, hand function and postural problems, etc.,
can be taken into consideration
In conclusion, even the primitive reflexes pres-
ent in traces are significant for psychomotor skills.
It seems reasonable to introduce reflexes inte-
gration therapy in children with low psychomo-
tor skills. Primitive reflexes routinely tested can
contribute to improved early psychomotor devel-
opment in children with needs, thus preventing
many difficulties which children might encounter
within their social and school life.
Acknowledgments
We are very grateful to the children, parents
and Director of Preschool no. 5 in Wroclaw, Ms
Anna Góralska, Ms Sabina Pałys-Pilszak and all
the staff for their very kind cooperation. We also
thank Marion McKay and Joanna McKay for native
language correction.
Conflict of interest
The authors declare no conflict of interest.
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