Body composition, exercise-related performance parameters and associated health factors of transgender women, cisgender women and cisgender men volleyball players
British Journal of Sports Medicine,
Год журнала:
2025,
Номер
unknown, С. bjsports - 108601
Опубликована: Фев. 18, 2025
Objective
The
inclusion
of
transgender
athletes
in
competitive
sports
has
promoted
significant
dialogue
and
controversy
among
exercise-related
professionals.
objective
this
study
was
to
investigate
body
composition,
performance
parameters
associated
health-related
factors
women
(TW),
cisgender
(CW)
men
(CM)
amateur
volleyball
players.
Methods
This
a
cross-sectional
comprising
TW,
CW
CM
players
eligible
with
the
following
characteristics:
‘gender
incongruent’
(for
TW
only);
age
between
18
35
years;
mass
index
(BMI)
18.0
29.9
kg/m
2
;
‘very
active’
according
International
Physical
Activity
Questionnaire,
engaged
regular
training
for
at
least
1
year.
All
participants
were
assessed
blood
biomarkers,
handgrip
strength,
countermovement
jump
height
(CMJ),
squat
(SQJ)
maximum
oxygen
consumption
(V̇O
2max
).
Results
69
initially
evaluated,
but
only
23
met
criteria
included
(7
8
CM).
Age
(p=0.07)
BMI
(p=0.26)
similar
groups.
Estradiol
(p=0.47),
total
testosterone
(p=1.00)
haemoglobin
levels
did
not
differ
CW.
However,
analysis
adjusted
by
confounding
variables
showed
that
presented
higher
(p<0.001),
(p=0.03),
lean
strength
CMJ
SQJ
(p=0.012)
V̇O
(mL/min)
(p=0.001)
compared
TW.
When
variables,
all
p
values
<0.05,
except
(p=0.062).
Conclusion
displayed
exercise
biomarkers
lower
results
CM.
Язык: Английский
Sleep Varies According to Game Venue but Not Season Period in Female Basketball Players: A Team-Based Observational Study
Applied Sciences,
Год журнала:
2025,
Номер
15(5), С. 2731 - 2731
Опубликована: Март 4, 2025
Sleep
is
an
essential
part
of
the
recovery
process
that
may
be
jeopardized
during
specific
contexts
across
season.
Therefore,
this
study
aimed
to
examine
impact
key
contextual
factors—game
venue
and
season
period—on
sleep
in
semi-professional,
female
basketball
players.
was
monitored
players
using
wrist-worn
activity
monitors
entire
regular
For
game
analyses,
nights
were
categorized
as
a
control,
before
after
home
games,
well
away
games.
period
arranged
into
evenly
distributed
four-week
blocks
early,
middle,
late
periods
Players
slept
significantly
less
on
games
(p
<
0.05)
than
other
nights,
which
attributed
earlier
wake
times
0.05).
While
onset
offset
later
middle
early
0.05),
duration
quality
remained
consistent
periods.
These
results
suggest
could
experience
disrupted
prior
has
potential
implications
for
performance
upcoming
Coaches
staff
need
consider
implementing
suitable
strategies
safeguard
their
these
scenarios.
Язык: Английский
Effects of sleep deprivation on sports performance and perceived exertion in athletes and non-athletes: a systematic review and meta-analysis
Frontiers in Physiology,
Год журнала:
2025,
Номер
16
Опубликована: Апрель 1, 2025
Sleep
deprivation
can
significantly
affect
sports
performance
and
the
perception
of
fatigue.
However,
impact
sleep
on
remains
a
subject
ongoing
debate
across
different
populations.
This
study
aimed
to
investigate
effects
ratings
perceived
exertion
(RPE)
in
groups,
as
well
how
types
these
aspects.
systematic
review
followed
PRISMA
guidelines
(PROSPERO
CRD42023492792).
Randomized
controlled
trials
(RCTs)
randomized
crossover
studies
published
any
language
or
up
date
were
eligible
based
P.I.C.O.S.
criteria.
The
search
included
databases
such
PubMed,
Cochrane,
Embase,
Web
Science,
EBSCO,
covering
September
2024.
Cochrane
RoB
2
tool
was
used
assess
risk
bias.
Meta-analysis
conducted
using
either
fixed-effect
model
random-effects
model.
subgroup
analyses
populations,
deprivation,
testing
times.
includes
45
studies,
comprising
16
aerobic
endurance
(AE)
performance,
8
anaerobic
(AnE)
23
explosive
power
(EP),
10
maximum
force
(MF),
4
speed,
skill
control,
12
rating
(RPE).
results
indicate
that
impaired
AE
athletes
[SMD
=
-0.66;
95%
CI
(-1.28,
-0.04);
P
0.04],
EP
-0.63;
(-0.94,
-0.33);
<
0.00001],
MF
-0.35;
(-0.56,
-0.14);
0.001],
speed
-0.52,
(-0.83,
-0.22);
0.0008],
control
-0.87;
(-1.7,
RPE
0.39;
(0.11,
0.66);
0.006].
Additionally,
also
reduced
healthy
non-athletes
-1.02;
(-1.84,
-0.21);
0.01].
During
process,
early
(PSDE)
-1.04;
(-1.58,
-0.5);
0.0002],
-0.57;
-0.19);
0.003],
-0.78;
(-1.35,
-0.2);
0.008],
0.6;
(0.17,
1.02);
Late
(PSDB)
impacted
(-1.15,
0.01);
0.05],
-2.12;
(-3.01,
-1.24);
0.47;
(0.02,
0.92);
0.04].
Overall,
total
primarily
affected
-0.56;
(-1.08,
-0.05);
0.03].
In
terms
phases,
p.m.
tests
had
significant
-1.4;
(-2.47,
-0.34);
0.01],
-0.68;
(-1.06,
-0.31);
0.0004],
-0.3;
(-0.51,
-0.09);
0.005],
0.72;
(0.20,
1.24);
0.007].
contrast,
a.m.
-0.81;
(-1.52,
-0.1);
0.03]
0.44;
(0.01,
0.86);
impairs
athletes'
various
domains,
including
AE,
MF,
while
exacerbating
RPE.
although
negatively
affects
non-athletes.
Furthermore,
PSDE
appears
have
more
pronounced
effect
overall.
assessments
been
shown
further
performance.
These
findings
are
crucial
for
understanding
impacts
both
non-athletes,
particularly
context
training
competitive
settings.
Язык: Английский
Influence of Sleep Quality on Recovery and Performance in Endurance and Ultra-Endurance Runners: Sex Differences Identified Through Hierarchical Clustering
Healthcare,
Год журнала:
2025,
Номер
13(7), С. 812 - 812
Опубликована: Апрель 3, 2025
Background:
Assessing
sleep
quality
is
essential
in
sports
science,
particularly
ultra-endurance
sports,
where
recovery
critical
for
performance
and
health.
Objective:
This
study
aimed
to
identify
patterns
among
endurance
athletes
using
hierarchical
clustering
analysis,
with
comparisons
by
sex
modality.
Method:
Data
were
collected
during
the
La
Misión
Brasil
competitions
2023
2024,
Pittsburgh
Sleep
Quality
Index
(PSQI).
The
questionnaire
was
emailed
all
registered
runners
two
weeks
before
event.
A
total
of
490
participated,
including
276
men
(mean
±
SD
age:
43
11
years)
214
women
13
years).
Statistical
analyses
included
Cohen's
d
r
effect
sizes,
a
95%
confidence
interval
hypothesis
testing.
Residuals
between-cluster
proportions
assessed
within
range
-3.3,
ensuring
99.7%
level
significant
differences.
Results:
results
showed
that
had
better
quality,
most
scoring
low
on
PSQI.
In
contrast,
displayed
greater
variability,
higher
prevalence
poor
women.
Conclusions:
method
effectively
identified
distinct
patterns,
providing
insights
into
dynamics
performance.
These
findings
highlight
impact
increased
physical
psychological
demands
emphasize
need
tailored
monitoring
strategies
optimize
athletes.
Язык: Английский
The Sleep–Wake Cycle Pattern of a Blind Trail Ultramarathon Runner and His Guide: The World’s First Case
Clocks & Sleep,
Год журнала:
2025,
Номер
7(2), С. 20 - 20
Опубликована: Апрель 15, 2025
Trail
running
has
seen
a
surge
in
participants,
including
individuals
with
disabilities,
particularly
ultratrail
(UTRs).
Sleep–wake
patterns
are
crucial
for
optimal
performances
UTRs,
which
present
unique
physiological
and
behavioral
challenges.
This
case
study
evaluated
the
sleep–wake
cycle
of
blind
trail
ultramarathoner
(BTR)
his
guide
(GTR)
before,
during,
after
an
80
km
UTR.
Two
male
participants
(BTR:
54
years,
BMI:
26.1
kg/m2;
GTR:
48
24.2
kg/m2)
were
assessed
using
validated
questionnaires
(MEQ,
ESS,
ISI,
PSQI)
actigraphy
over
35
days.
The
BTR
exhibited
morning
chronotype
(MEQ
=
63),
mild
insomnia
(ISI
11),
poor
sleep
quality
(PSQI
5),
prolonged
latency
(>60
min),
while
GTR
showed
indifferent
52),
good
3),
shorter
(10
min).
Post-competition,
both
athletes
experienced
increased
total
time
(TST):
by
17.8%
(05:32:00
vs.
04:25:00)
5.5%
(07:01:00
06:39:00).
demonstrated
greater
Wakefulness
onset
(WASO
01:00:00
00:49:00)
awakenings
(15.4
6.1).
A
series
analysis
revealed
variability
BTR’s
post-competition
efficiency
TST,
stability
circadian
phase.
These
findings
highlight
intricate
challenges
faced
athletes,
informing
strategies
to
optimize
recovery
performance.
Язык: Английский
Relationships between smart ring-measured sleep variables and next-day basketball game performance: A case series
International Journal of Sports Science & Coaching,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 24, 2025
Sleep
is
critical
to
athlete
health
and
sport
performance.
Purpose
To
evaluate
the
relationship
between
objective
sleep
data
next-day
basketball
game
Methods
Collegiate
men
athletes
(n
=
4)
wore
smart
ring
trackers
night
before
games
22).
variables
included
hours
of
total
(TS),
rapid
eye
movement
duration
(RM),
deep
(DS),
heart
rate
variability
(HRV).
Game
performance
was
evaluated
using
field
goal
percentage
(FG%)
player
efficiency
(EFF).
Results
TS,
RM,
DS,
HRV
demonstrated
very
weak
relationships
with
FG%
(
p
>
0.05)
EFF
0.05).
Individual
analysis
revealed
one
exhibited
strong
moderate
correlations
for
TS-EFF
(r
0.67),
RS-EFF
0.41),
TS-FG%
0.51),
RM-FG%
0.67)
<
metrics
had
no
effect
on
(R
2
0.025)
0.053)
Conclusions
suggest
a
lack
group-level
associations
ring-measured
This
highlights
need
individualized
monitoring
rather
than
relying
solely
metrics.
Язык: Английский
Jet lag: an underestimated factor in reduced physical performance in athletes
Quality in Sport,
Год журнала:
2024,
Номер
21, С. 53879 - 53879
Опубликована: Авг. 28, 2024
Jet
lag
is
a
common
issue
affecting
most
athletes
traveling
across
at
least
2
time
zones,
particularly
when
eastward.
Observational
studies
on
over
114,000
game
matches
have
established
that
teams
had
statistically
significant
higher
rate
of
losses.
manifests
not
only
in
decline
athletes'
physical
performance
but
also
affects
cognitive
abilities,
attention
span,
and
subjective
feelings
fatigue.
Melatonin
can
be
very
important
supplement
helping
to
regulate
the
circadian
rhythm.
Other
recommended
methods
include
phototherapy,
appropriate
meal
timing,
sedative
medications.
This
paper
aims
gather
latest
clinical
research
assessing
predisposition
jet
symptoms,
large-scale
retrospective
observational
evaluating
this
phenomenon,
discusses
functioning
rhythm,
for
alleviating
its
manifestations.
Язык: Английский