Applied Sciences,
Journal Year:
2023,
Volume and Issue:
13(18), P. 10015 - 10015
Published: Sept. 5, 2023
This
retrospective
study
aimed
to
estimate
the
differences
between
selected
indicators
of
physical
fitness
and
body
composition
in
young
tennis
players
during
COVID-19
pandemic
(2020
2021)
their
values
as
predicted
using
pre-pandemic
trend
(2015–2019).
Data
were
collected
from
boys
(mean
±
SD;
13.2
1.7
years)
girls
(13.1
1.9
annual
tests.
analyzed
with
linear
mixed-effects
models
for
males
females,
separately,
predict
test
scores,
adjusting
age
trends
data.
Compared
expected
values,
fat
mass
increased
(2020:
0.68;
0.44–0.92,
2021:
1.08;
0.72–1.43),
whereas
muscle
decreased
−0.22;
−0.34–−0.10,
−0.28;
−0.46–−0.10)
throughout
pandemic.
Interestingly,
boys’
age-adjusted
squat
jump
scores
improved
relative
0.19;
0.00–0.38,
0.35;
0.06–0.63).
No
other
measured
noted
across
observation
period.
The
results
this
suggest
that
sustained
reduction
sports
activity
caused
by
may
have
negatively
affected
athletes;
however,
did
not
affect
performance
indicators.
European Journal of Sport Science,
Journal Year:
2025,
Volume and Issue:
25(3)
Published: Feb. 15, 2025
ABSTRACT
In
1985,
Thomas
and
French
published
results
of
a
meta‐analysis
that
examined
sex
differences
in
grip
strength
children
5
years
age
older.
Their
analysis
included
from
only
four
studies,
no
update
has
been
published.
The
purpose
the
current
study
was
to
use
examine
birth
16.
808
effects
169
studies
conducted
45
countries
between
1961
2023.
total
sample
353,676
(178,588
boys,
175,088
girls).
From
16
age,
consistently
greater
boys
than
girls.
Between
3
10
old,
effect
size
small‐to‐moderate,
with
female
equaling
90%
male
(Hedges
g
=
0.33–0.46).
At
11,
decreased
slightly,
likely
due
girls
reaching
puberty
before
(
0.29,
95%
confidence
intervals
(CI)
[0.22,
0.35]).
13,
increased
markedly
0.63,
CIs
[0.55,
0.70]).
By
16,
difference
substantial,
65%
2.07,
[1.86,
2.27]).
Secondary
analyses
revealed
is
broadly
similar
mostly
stable
since
1960s,
except
for
narrowing
among
5–10‐year‐olds
after
2010.
Various
biological
factors
explain
why,
on
average,
are
stronger
onward.
International Journal of Environmental Research and Public Health,
Journal Year:
2022,
Volume and Issue:
19(8), P. 4565 - 4565
Published: April 10, 2022
During
the
COVID-19
pandemic,
physical
inactivity
and
being
overweight
increased
in
children,
especially
those
from
lower
socioeconomic
backgrounds.
Additionally,
a
decrease
motor
performance
has
been
increasingly
reported;
however,
there
is
lack
of
meaningful
data
on
relationship
between
these
findings
status.
Therefore,
we
examined
BMI,
BMI
Sports Medicine - Open,
Journal Year:
2023,
Volume and Issue:
9(1)
Published: Aug. 14, 2023
In
spring
of
2020,
the
Sars-CoV-2
incidence
rate
increased
rapidly
in
Germany
and
around
world.
Throughout
next
2
years,
schools
were
temporarily
closed
social
distancing
measures
put
place
to
slow
spread
Covid-19
virus.
Did
these
restrictions
temporary
school
lockdowns
affect
children's
physical
fitness?
The
EMOTIKON
project
annually
tests
fitness
all
third-graders
Federal
State
Brandenburg,
Germany.
assess
cardiorespiratory
endurance
(6-min-run
test),
coordination
(star-run
speed
(20-m
sprint
lower
(powerLOW,
standing
long
jump
upper
(powerUP,
ball-push
test)
limbs
muscle
power,
static
balance
(one-legged
stance
test
with
eyes
closed).
A
total
125,893
children
tested
falls
from
2016
2022.
Primary
analyses
focused
on
98,510
keyage
(i.e.,
enrollment
according
legal
key
date,
aged
8
9
years)
515
schools.
Secondary
included
27,383
older-than-keyage
OTK,
delayed
or
repetition
a
grade,
10
years),
who
have
been
shown
exhibit
than
expected
for
their
age.
Linear
mixed
models
fitted
pre-pandemic
quadratic
secular
trends,
took
into
account
differences
between
schools.Third-graders
exhibited
endurance,
coordination,
powerUP
Covid
pandemic
cohorts
(2020-2022)
compared
(2016-2019).
Children's
powerLOW
higher
cohorts.
From
2020
2021,
further
declined.
Evidence
some
post-pandemic
catch-up
was
restricted
powerUP.
Cohen's
|ds|
comparisons
2020-2022
2016-2019
ranged
0.02
0.15
coordination.
Within
cohorts,
developmental
losses
ranging
approximately
1
month
5
months
endurance.
For
balance,
positive
effects
translate
gains
7
months,
respectively.
Pre-pandemic
trends
may
observed
especially
powerLOW,
balance.
delays
OTK
balance.The
associated
declines
several
components
German
third-graders.
Pandemic
are
still
visible
Health-related
interventions
should
specifically
target
those
that
negatively
affected
by
(cardiorespiratory
speed).
Journal of Sports Sciences,
Journal Year:
2024,
Volume and Issue:
42(8), P. 688 - 700
Published: April 17, 2024
We
assessed
whether
changes
in
children's
body
mass
index
(BMI),
physical
fitness
and
health-related
quality
of
life
observed
post-2020
United
Kingdom
COVID-19
lockdown
remained
12
18
months
later.
Twenty-metre
shuttle
run
test
(20mSRT),
handgrip
strength,
standing
broad
jump,
sit-and-reach,
height,
mass,
(Kidscreen27
questionnaire)
were
measured
90
children
(8–9
years)
during
October
2019
("T0"),
November
2020
("T1"),
2021
("T2")
June
2022
("T3").
Mixed-effects
models
showed
age-
sex-normalised
BMI
increased
from
T0
(mean:
0.71)
to
T1
(0.97),
remaining
elevated
at
T2
(0.95)
T3
(0.89).
Decreases
20mSRT
performance
(22.0)
(19.3),
then
(23.5)
(28.3).
Standing
jump
strength
over
time.
The
proportion
with
overweight/obesity
(32%)
(48%).
Health-related
decreased
for
"Physical
Wellbeing"
yet
"Autonomy
&
Parents".
Our
findings
highlight
that
lockdowns
may
have
had
lasting
implications
health,
the
urgent
need
reduce
overweight
obesity
North
East
England.
Improving
health
behaviours
maximise
long-term
outcomes
build
resilience
future
emergencies
disruptions
is
also
paramount.
AIMS Public Health,
Journal Year:
2023,
Volume and Issue:
10(2), P. 480 - 495
Published: Jan. 1, 2023
With
the
emergence
of
COVID-19
pandemic,
many
countries
implemented
policies
that
included
movement
restrictions,
social
distancing
and
school
closures
in
order
to
control
spread
virus.
Even
though
these
actions
may
have
been
necessary
save
lives,
there
some
unintended
consequences
could
affect
future
public
health.The
present
study
uses
data
from
more
than
24,500
Austrian
elementary
children
(51.2%
male)
participated
a
state-wide
fitness
evaluation
program,
which
was
initiated
2016/17
year.
In
addition
body
weight
height,
on
cardiorespiratory
endurance,
muscular
power,
speed,
agility,
flexibility
object
were
collected
three
cohorts
prior
implementation
restrictions
(school
years:
2016/17,
2017/18,
2018/19)
one
cohort
2022,
after
majority
had
lifted.Body
mass
index
percentiles
significantly
higher
post-COVID-19
(p
<
0.01).
Further,
agility
lower
compared
years
preceding
≤
0.01),
while
absolute
strength
year
2022
0.01).Given
detrimental
effects
physical
children,
additional
efforts
are
include
versatile
opportunities
for
activity
promotion
modify
observed
negative
health
trajectories
ensure
health.
Journal of Physical Activity and Health,
Journal Year:
2024,
Volume and Issue:
21(5), P. 500 - 507
Published: March 13, 2024
The
COVID-19
pandemic,
caused
by
the
SARS-CoV-2
virus,
has
posed
a
threat
to
society
worldwide.
aim
of
study
was
analyze
changes
in
physical
fitness
11-
15-year-olds
during
pandemic.
Journal of PHYSIOLOGICAL ANTHROPOLOGY,
Journal Year:
2023,
Volume and Issue:
42(1)
Published: March 24, 2023
Coronavirus
disease
2019
(COVID-19)
has
reduced
people's
physical
activity.
It
is
essential
to
accumulate
knowledge
regarding
the
influence
of
COVID-19
on
stimulation
fitness
and
functions.
Several
studies
have
reported
effects
fitness;
however,
there
are
very
few
reports
preschoolers.
This
study
aimed
compare
preschoolers
before
during
pandemic
clarify
curtailment
outings
implemented
control
among
preschoolers.The
subjects
were
593
Japanese
preschool
children
enrolled
at
a
kindergarten
2015-2019
in
2021
who
received
test.
Children
2020
did
not
receive
test
because
excluded.
The
included
grip
strength,
standing
long
jump,
25-m
run.
relationship
between
level
survey
year
was
analyzed
using
general
linear
model,
with
strength
jump
as
dependent
variables,
independent
variable,
sex
age
months
adjusted
variables.
Kruskal-Wallis
used
analyze
data
for
Multiple
comparisons
levels
(during
pandemic)
previous
years.Significant
relationships
found
each
(p
<
0.001),
0.05),
run
0.001)
overall
subjects.
Grip
significantly
lower
compared
2016-2019
period.
Similarly,
sub-stratification
analysis
by
showed
that
than
years,
both
sexes.
However,
no
difference
or
times
according
sex.These
findings
indicate
had
negative
effect
development
muscle
preschoolers,
suggest
need
develop
strategies
could
promote
when
limitations
placed
activity
prolonged
infectious
pandemics.
Journal of Clinical Medicine,
Journal Year:
2022,
Volume and Issue:
11(6), P. 1570 - 1570
Published: March 12, 2022
This
study
aimed
to
investigate
the
effects
of
a
school-based
exergame
intervention
on
anthropometric
parameters
and
physical
fitness.
Fifty-eight
students
(10.4
±
0.8
years;
48%
girls)
were
randomized
into
an
(IG)
control
(CG)
group.
Both
groups
participated
in
regular
education
classes
during
three-month
period.
The
IG
additionally
received
20-minute
twice
per
week.
At
baseline
following
period,
body
mass
index
(BMI)
waist-to-height
ratio
(WHtR)
assessed.
Furthermore,
sprint
test
(ST),
countermovement
jump
(CMJ),
shuttle
run
(SRT)
performed.
Due
prescribed
quarantine
measures,
only
34
(18
IG;
16
CG)
included
final
analysis.
A
significant
group−time
interaction
was
determined
CMJ
performance
(p
<
0.001;
η2
=
0.403),
with
increase
(+2.6
2.4
cm;
p
0.315)
decrease
(−2.0
3.1
0.009;
0.190)
CG.
ST
significantly
improved
(−0.03
0.08
s;
0.012;
0.180)
but
not
CG
(0.13
0.16
0.460;
0.017),
revealing
0.02;
0.157).
Significant
observed
for
SRT
0.046;
0.122),
(+87.8
98.9
m;
0.028;
0.147)
no
changes
(−29.4
219.7
0.485;
0.016)
Concerning
BMI
0.157;
0.063)
WHtR
0.063;
0.114),
detected.
School-based
exergaming
is
suitable
tool
influence
students’
fitness
positively.
International Journal of Environmental Research and Public Health,
Journal Year:
2023,
Volume and Issue:
20(4), P. 3422 - 3422
Published: Feb. 15, 2023
Due
to
a
worldwide
response
the
COVID-19
pandemic,
many
changes
were
imposed
on
individuals'
daily
lives,
including
those
related
physical
activity
of
children
and
adolescents.
The
present
study
aims
comprehend
impact
early
pandemic
restrictions
Portuguese
adolescents'
fitness
parameters
during
two
school
years.
A
total
640
students
from
5th
12th
grades
participated
in
longitudinal
study.
Data
body
composition,
aerobic
fitness,
speed,
agility,
lower
upper
strength,
flexibility
collected
at
three
moments:
1.
before
(December
2019);
2.
after
lockdown
when
schools
reopened
delivering
in-person
classes
(October
2020),
3.
months
started
2020).
To
analyze
overall
between
moments
age
groups,
we
conducted
repeated
measure
ANOVAs.
main
findings
indicate
that
participants'
composition
(i.e.,
waist
circumference)
maximal
oxygen
uptake)
deteriorated
first
but
improved
started.
However,
same
did
not
happen
neuromuscular
horizontal
Jumps
Sit
Reach).
These
suggest
may
have
negatively
impacted
particularly
older
Altogether,
data
reinforce
importance
context
promoting
health.