2022 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC),
Journal Year:
2023,
Volume and Issue:
unknown, P. 272 - 277
Published: Oct. 31, 2023
This
study
introduces
a
novel
muscle
activation
analysis
based
on
surface
electromyography
(sEMG)
signals
to
assess
the
muscle's
after-fatigue
condition.
Previous
studies
have
mainly
focused
before-fatigue
and
fatigue
conditions.
However,
comprehensive
of
condition
has
been
overlooked.
The
proposed
method
analyzes
indicators
at
various
maximal
voluntary
contraction
(MVC)
levels
compare
before-fatigue,
fatigue,
conditions
using
amplitude-based,
spectral-based,
fiber
conduction
velocity
(CV)
parameters.
In
addition,
time
each
MVC
level
is
also
analyzed
with
same
indicators.
results
show
that
in
condition,
changes
significantly
ways
such
as
higher
CV,
power
spectral
density
shifting
right,
longer
until
exhaustion
compared
can
provide
objective
evaluation
recovery,
which
be
helpful
clinical
diagnosis,
rehabilitation,
sports
performance.
GeroScience,
Journal Year:
2023,
Volume and Issue:
46(1), P. 113 - 127
Published: Oct. 11, 2023
Abstract
Inflammaging
refers
to
the
age-related
low
grade,
sterile,
chronic,
systemic,
and
long-lasting
subclinical,
proinflammatory
status,
currently
recognized
as
main
risk
factor
for
development
progression
of
most
common
diseases
(ARDs).
Extensive
investigations
were
focused
on
a
plethora
stimuli
that
can
fuel
inflammaging,
underestimating
partly
neglecting
important
endogenous
anti-inflammaging
mechanisms
could
play
crucial
role
in
such
state.
Studies
autonomic
nervous
system
(ANS)
functions
during
aging
highlighted
an
imbalance
toward
overactive
sympathetic
(SNS)
tone,
promoting
conditions,
diminished
parasympathetic
(PNS)
activity,
playing
anti-inflammatory
effects
mediated
by
so
called
cholinergic
pathway
(CAP).
At
molecular
level,
CAP
is
characterized
signals
communicated
via
vagus
nerve
(with
possible
involvement
splenic
nerves)
through
acetylcholine
release
downregulate
inflammatory
actions
macrophages,
key
players
inflammaging.
Notably,
decreased
vagal
function
increased
burden
activated/senescent
macrophages
(macrophaging)
probably
precede
several
factors
diseases,
while
reduced
macrophaging
be
associated
with
relevant
reduction
profiles.
Hypothalamic–pituitary–adrenal
axis
(HPA
axis)
another
related
ANS
some
response
mainly
cortisol
levels.
In
this
perspective
review,
we
HPA,
representing
broadly
“anti-inflammaging”
mechanisms,
have
efficacy
lose
effectiveness
aged
people,
phenomenon
contribute
framework,
strategies
aimed
re-balance
PNS/SNS
activities
explored
modulate
systemic
inflammaging
especially
at
early
subclinical
stage,
thus
increasing
chances
reach
extreme
limit
human
lifespan
healthy
status.
European Journal of Applied Physiology,
Journal Year:
2024,
Volume and Issue:
124(12), P. 3583 - 3591
Published: July 24, 2024
Abstract
Purpose
This
study
aimed
to
verify
whether
the
slowing
of
muscle
contraction
quickness,
typically
observed
in
states
fatigue,
may
worsen
force
control
by
decreasing
rate
with
which
fluctuations
are
modulated.
Therefore,
we
investigated
relationship
between
development
(RFD),
and
fluctuations'
magnitude
(Coefficient
variation,
CoV)
complexity
(Approximate
Entropy,
ApEn;
Detrended
fluctuation
analysis,
DFAα).
Methods
Fourteen
participants
performed
intermittent
ballistic
isometric
contractions
plantar
dorsiflexors
at
70%
maximal
voluntary
until
task
failure
(under
60%
twice).
Results
Indices
RFD
(RFD
peak
,
50
100
150
)
decreased
over
time
approximately
46,
32,
44,
39%,
respectively
(p
all
≤
0.007).
DFAα
increased
10%
<
0.001),
CoV
15%
indicating
along
fluctuations,
respectively.
ApEn
just
a
quarter
(28%,
p
0.001).
The
linear
hierarchical
models
showed
negative
associations
(β
=
−
3.6
10
–4
1.8
–3
while
positive
association
8.2
×
–5
Conclusion
results
suggest
that
exercise-induced
reductions
speed,
lead
smoother
diminished
due
slower
adjustments
around
target
force.
fatigued
state
resulted
worsened
producing
capacity
overall
control.
Medicine & Science in Sports & Exercise,
Journal Year:
2024,
Volume and Issue:
56(9), P. 1849 - 1859
Published: April 15, 2024
Central
nervous
system
excitability
depends
on
the
task
performed,
muscle
group
solicited,
and
contraction
type.
However,
little
is
known
corticospinal
motoneuronal
measured
during
locomotor
exercise.
This
study
aimed
at
determining
reliability
of
motor-evoked
potentials
(MEP)
thoracic
(TMEP)
in
dynamic
mode
unfatiguing
fatiguing
cycling
Medicine & Science in Sports & Exercise,
Journal Year:
2024,
Volume and Issue:
56(9), P. 1563 - 1573
Published: April 14, 2024
Approximately
30%
of
people
infected
with
COVID-19
require
hospitalization,
and
20%
them
are
admitted
to
an
intensive
care
unit
(ICU).
Most
these
patients
experience
symptoms
fatigue
weeks
post-ICU,
so
understanding
the
factors
associated
in
this
population
is
crucial.
Medicine & Science in Sports & Exercise,
Journal Year:
2024,
Volume and Issue:
56(9), P. 1623 - 1633
Published: May 15, 2024
Chronic
fatigue
is
the
most
common
and
debilitating
symptom
in
people
with
multiple
sclerosis
(PwMS).
Recently,
exercise
has
been
proven
to
alleviate
chronic
improve
physical
functions.
Tailoring
training
intervention
potential
causes
could
optimize
beneficial
effects
of
on
fatigue.
The
objective
this
study
was
compare
effectiveness
an
individualized
(IND)
versus
a
traditional
(TRAD)
reducing
