Effects of 24-weeks in-field use of a back-supporting exoskeleton on biomechanics, work intensity and musculoskeletal discomfort: A randomized controlled trial among logistic workers
Applied Ergonomics,
Год журнала:
2025,
Номер
125, С. 104469 - 104469
Опубликована: Фев. 3, 2025
The
trial
investigated
the
impact
of
a
back-supporting
exoskeleton
(BSE)
on
biomechanics,
work
intensity,
and
musculoskeletal
discomfort
among
logistic-workers
over
24-weeks
in
field-setting.
Twenty
workers
were
randomized
into
intervention
control
groups,
performing
daily
order-picking
with
without
BSE,
respectively.
Effects
muscles
activity
kinematics
measured
during
standardized
tasks
before
after
period,
while
intensity
rated
throughout
period.
results
indicated
significant
reductions
back
muscle
lifting
BSE
assistance
24-weeks.
Although
three
users
stopped
using
remaining
progressively
increased
their
use
associated
an
overall
decrease
perceived
suggests
that
effect
remains
constant
24-weeks,
opposite
what
was
hypothesized
based
previous
research
training.
Язык: Английский
Recursive PID-NT Estimation-Based Second-Order SMC Strategy for Knee Exoskeleton Robots: A Focus on Uncertainty Mitigation
Electronics,
Год журнала:
2025,
Номер
14(7), С. 1455 - 1455
Опубликована: Апрель 3, 2025
This
study
introduces
a
modified
second-order
super-twisting
sliding
mode
control
algorithm
designed
to
enhance
the
precision
and
robustness
of
knee
exoskeleton
robots
by
incorporating
advanced
uncertainty
mitigation
techniques.
The
key
contribution
this
research
is
development
an
efficient
estimation
mechanism
capable
accurately
identifying
model
parameter
uncertainties
patients’
unwanted
action
torques
disturbance
within
finite
time
horizon,
thereby
improving
overall
system
performance.
proposed
framework
ensures
smooth
precise
signal
dynamics
while
effectively
suppressing
chattering
effects,
common
drawback
in
conventional
methodologies.
theoretical
foundation
rigorously
established
through
formulation
PID
non-singular
terminal
variable,
which
stability
phase
comprehensive
Lyapunov-based
analysis
assuming
that
upper
bound
its
derivative
are
known
reaching
phase,
collectively
guarantee
system’s
reliability.
Through
simulations,
efficacy
evaluated
ability
track
diverse
desired
angles,
demonstrate
against
disturbances,
such
as
those
caused
patient’s
foot
reaction,
handle
20%
parameters.
Additionally,
effectiveness
assessed
three
individuals
with
varying
Notably,
controller
gains
remain
consistent
across
all
scenarios.
constitutes
significant
advancement
domain
control,
offering
more
reliable
methodology
for
addressing
uncertainties.
Язык: Английский
Performance Evaluation of Rapid Entire Body Assessment Using AI-Assisted Ergonomic Analysis in Dentistry
Biomimetics,
Год журнала:
2025,
Номер
10(4), С. 239 - 239
Опубликована: Апрель 13, 2025
This
study
seeks
to
automate
the
Rapid
Entire
Body
Assessment
(REBA)
in
dentistry
with
Artificial
Intelligence
(AI)
technologies,
notably
MediaPipe,
improve
accuracy
and
obviate
necessity
for
expert
judgment.
research
utilizes
time-synchronized
videos
averages
across
frames
mitigate
mistakes
resulting
from
visual
occlusion
over-
or
underestimation,
respectively.
The
REBA
scores
of
observed
dentists
were
evaluated
compared
conventional
single
image-based
method.
Among
dentists,
83%
are
at
high
risk,
other
17%
very
requiring
solutions
lower
their
prevent
musculoskeletal
disorders
(MSDs).
individual
point
profiles
differed,
necessitating
a
collective
through
response
surface
methodology
(RSM)
utilizing
Design
Expert
software.
RSM
model
exhibited
substantial
results,
as
indicated
by
R2
=
0.9055
p
<
0.0001
values.
A
linear
regression
equation
was
established,
contour
graphs
depicted
relative
variation
points.
optimized
score
profile
establishes
maximum
attainable
threshold
directing
them
towards
scores.
streamlined
functions
design
restriction
creating
ergonomic
dental
practice.
Язык: Английский