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Table 1 Included studies reported by populations, fatigue protocols and outcome measures

From: Consequences of lower extremity and trunk muscle fatigue on balance and functional tasks in older people: A systematic literature review

STUDY POPULATION FATIGUE PROTOCOL OUTCOME
  Study
population
Control
group
Uni/bilateral
muscle
group(s)
Intensity Sets &
rate or
speed
Total
reps &
duration
Endpoint
(force/
velocity
drop)
Functional
task (pre
versus post
fatigue)
Main
fatigue
effect
Fatigue
×
Age
interaction
Bellew
et al. 2006
[23]
18 older
adults
77 ± 6 yrs
All ♀
- Unilateral
Knee flexors/
extensors
Ankle plantar/
dorsi-flexors
Peak
torque
Number of
sets not
specified
at 180°/s
Not
specified
< 50%
peak
torque
Quiet standing
Single-limb
stance time
Voluntary
movements
Modified functional
reach
Lower extremity
reach
Yes
Yes
Yes
N/A
Davidson
et el. 2009
[18]
16 older
adults
62.2 ± 5.1
yrs
8 ♂, 8 ♀
16 younger
adults
9.4 ± 1.4
yrs
8 ♂, 8 ♀
Not specified:
Ankle plantar
flexors
Bilateral:
Lumbar
extensors
45% of
MVC
1 set of 23
reps/min
Rate not
specified
~322
reps
(~14 min)
~70% MVC External
perturbations
Maximum forward
trunk perturbation
withstood
without
stepping
Yes * Yes:
effect
Y < O
Lin et al.
2009
[19]
16 older
adults
55-65 yrs
♂ and ♀
16 young
adults
18-24 yrs
♂ and ♀
Unilateral
Ankle plantar-
flexors
Knee extensors
Lumbar extensors
60% of
MVC
1 set of 12
reps/min
at 60°/s
~144
reps
(~12 min)
~60% MVC Quiet standing
11 trials of 75 s at
0.75 - 20 min
post fatigue
compared to 3
trials pre
fatigue
Yes * Yes:
effect
Y > O
Mademli
et al. 2008
[20]
11 older
adults
65 ± 3 yrs
All ♂
11 young
adults
32 ± 7 yrs
All ♂
Bilateral
Knee
extensors/
flexors
25% of
MVC
3 sets of 15
reps/min,
with 2 min
resting
intervals
at 45°/s
y: ~80
reps;
(6.6
± 3.6
min)
o:~100
reps
(8.4 ±
5.3 min)
~75-80%
MVC
External
perturbations
Single step
during a
forward fall
No * No:
effect
Y = O
Moore et al.
2005
[24]
21 older
adults
71.2 ± 3.8
yrs, Range
66-81
5 ♂, 16 ♀
- Unilateral
Knee flexors/
extensors
Ankle plantar/
dorsiflexors
Hip abductors/
extensors
60% of
1 RM
3 sets
of 10-12
reps, with 2
min resting
intervals
Rate not
specified
~30 - 36
reps
Not
specified
Quiet
standing
10 trials of 30 s
with 10 s resting
intervals
Yes N/A
Helbostad
et al. 2007
[22]
22 fatigued
older adults
78.2 ± 5.0
yrs, Range
70-86
5 ♂, 17 ♀
22
unfatigued
older adults
80.4 ± 4.9
yrs, Range
73-89
5 ♂ 17 ♀
Bilateral
sit-to-stand
Leg extensors
Not
specified
Fast speed
up and
down
~ 25
reps
12% mean
velocity
drop
15% peak
velocity
drop
Voluntary
movements
Walking at
habitual gait
speed
Yes # N/A
Petrella
et al. 2005
[21]
24 older
adults
63 ± 0.8 yrs,
Range 60-75
13 ♂, 11 ♀
28 young
adults
26.9 ± 0.7
yrs, Range
20-35
12 ♂, 16 ♀
Bilateral
sit-to-stand
Leg
extensors
Not
specified
Fast speed
up, slow
speed down
10 reps 27% power
drop
12% force
drop
20%
velocity
drop
Voluntary
movements
Sit-to-stand
velocity
Yes * No:
effect
Y = O
  1. Y = young; O = older; MVC = Maximum Voluntary Capacity; RM = repetition maximum; N/A = not applicable; Note: * main effect over age groups; # effect in fatigued group only