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. 2022;22(4):562–586.

Table 2.

Associations (Part 2).

Study Associations (r2-values) Muscle actions Assessment details
Fmax-Function RFD-Function
Older adults Altubasi et al. 2015 n=21 0.05 0.12 Knee ext RFDmax Short walkusual+max,
Stair climb, TUG
Bento et al. 2010 n=31 0.02 Knee flex RFD20-80% Number of falls
Crocket et al. 2015 n=29 0.08 Knee ext RFDmax Chair rise
Hester et al. 2019 n=26 0.25 Plantar flex (dyn) VGRFD Chair rise,
Short walkusual+max, TUG
LaRoche et al. 2011 n=24 0.25 0.22 Dorsi+Plantar flex Knee ext+flex RFD200ms Long walkusual+max
Lopez et al. 2017 n=50 0.16 Knee ext RFD50ms, RFD100ms Chair rise
Rech et al. 2014 n=45 0.15 0.11 Knee ext RFD50ms, RFD100ms, RFD250ms, RFD300ms Chair rise, Short walkusual
Seynnes et al. 2005 n=19 0.20 0.05 Knee ext RFDmax
Chair rise, Long walkmax, Stair climb
Thompson et al. 2018 n=18 0.29 0.19 Knee ext+flex, Squat RFD50ms, RFD200ms
Chair rise, Long walkmax,
Short walkmax
Unhjem et al. 2019 n=41 0.30 0.27 Leg press (dyn) RFD30ms, RFD50ms, RFD100ms, RFD150ms, RFD200ms Chair rise
Weighted mean 95% CI [lower : upper] Participants
Studies		 n=295
N=10		 0.19
[0.12 : 0.27]		 0.14
[0.09 : 0.19]
PD patients Pääsuke et al. 2002 n=14 0.19 0.09 Knee ext RFDmax Chair rise
Pääsuke et al. 2004 n=12 0.22 0.09 Knee ext (bilat.) RFDmax Number of falls
Weighted mean 95% CI [lower : upper] Participants Studies n=26
N=2		 0.20 [0.20 : 0.21] 0.09 [0.08 : 0.10]
MS patients Kjølhede et al. 2015a n=34 0.13 0.11 Knee ext+flex RFD200ms, RFDmax Chair rise,
Long walkmax, Short walkmax, Stair climb
Stroke patients Nadeau et al. 1997 n=12 0.06 0.09 Plantar flex RFDpeak
Short walkusual+max, TUG
Pohl et al. 2002 n=83 0.04 0.09 Knee ext RFD150ms
Short walkusual
Takeda et al. 2018 n=20 0.20 0.24 Knee ext RFD50ms, RFD100ms, RFD200ms, RFD300ms Short walkusual+max
Weighted mean 95% CI [lower : upper] Participants Studies n=115 N=3 0.07 [0.03 : 0.11] 0.11 [0.04 : 0.19]
All Weighted mean 95% CI [lower : upper] Participants Studies n=470 N=16 0.15 [0.10 : 0.20] 0.13 [0.09 : 0.17]

TUG: timed up and go. VGRFD: vertical ground reaction RFD (derived from force plate). In studies reporting data on more than one association between Fmax or RFD (based on a mean RFD value in studies reporting data on more than one RFD measure) and physical function, mean association values of Fmax-Function and RFD-Function, respectively, were calculated.