Author, year Design Demographics (individuals poststroke) Demographics (healthy controls) Muscle sets for EMG observation Factorization technique Allen et al. 2013 [25 ] Cross-sectional Sex: 7 males, 4 females; age: 62.2 ± 11.7; time since stroke: 3.5 ± 2.7 years Sex: 2 males, 12 females; age: 63.1 ± 9.1TA, SO, MG, VM, RF, MH, LH, GM NNMF Barroso et al. 2017 [34 ] Cross-sectional Sex: 6 males, 3 females; age: 53 ± 11.05; time since stroke: 75.6 ± 65.9 monthsNone TA, SO, MG, VL, RF, BF, GM, GMax, TFL, ADL, ES NNMF Bowden et al. 2010 [26 ] Cross-sectional Sex: 35 males, 20 females; age: 59.5 ± 11.7; time since stroke: NR Sex: 4 males, 16 females; age: 65.5 ± 9.8TA, SO, MG, VM, RF, MH, LH, GM NNMF Clark et al. 2010 [14 ] Cross-sectional Sex: 35 males, 20 females; age: 59.5 ± 11.7; time since stroke: 57.8 ± 64.8 months Sex: 4 males, 16 females; age: 65.5 ± 9.8TA, SO, MG, VM, RF, MH, LH, GM NNMF Coscia et al. 2015 [27 ] Cross-sectional Sex: 9 males, 3 females; age: 58.53 ± 16.37; time since stroke: 54.6 ± 56.2 months Sex: 9 males, 3 females; age: 63.3 ± 3.1PERL, TA, SOL, LG, RF, VM, BF, ST, ADL, TFL, GM, GMax Factor analysis Ferrante et al. 2016 [28 ] Prepost experimental Sex: 2 males, 0 female; age: 67, 64; time since stroke: 11 years, 9 months Sex: 7 males, 6 females; age: 24.8 ± 1.3TA, MG, MH, LH, VM, RF, GMax NNMF Gizzi et al. 2011 [29 ] Cross-sectional Sex: 8 males, 2 females; age: 45.9 ± 16.5; time since stroke: 12 ± 5 weeks Sex: 7 males, 3 females; age: 42.4 ± 14.5TA, MG, SOL, VL, RF, BF, GMax, RA, ES, LD, BB, TB, AD, UT, ST, SPL NNMF Hashiguchi et al. 2016 [30 ] Prepost experimental Sex: 10 males, 3 females; age: 58.8 ± 13.2; time since stroke: 66.8 ± 24.2 daysNone TA, LG, SO, RF, VM, BF, ST, GM NNMF Kautz et al. 2011 [31 ] Cross-sectional Sex: 36 males, 20 females; age: 61.0 ± 12.3; time since stroke: 5.1 ± 5.6 years Sex: 2 males, 15 females; age: 65.1 ± 10.4TA, SO, MG, VM, RF, MH, LH, GM NNMF Routson et al. 2013 [32 ] Prepost experimental Sex: 15 males, 7 females; age: 57.3 ± 13.2; time since stroke: 19 ± 13 monthsNone TA, SO, MG, VM, RF, MH, LH, GM NNMF Routson et al. 2014 [33 ] Prepost experimental Sex: 18 males, 9 females; age: 60.15 ± 12.08; time since stroke: >6 months Sex: 9 males, 8 females; age: 54.18 ± 8.33TA, SO, MG, VM, RF, MH, LH, GM NNMF