Table 2.
Data muscle strength of the studies Included in the Review.
| Study | Units | Muscle strength ABDTHip LBP vs Control | Muscle strength ADTHip LBP vs Control | Muscle strength EXHip LBP vs Control | Muscle strength FXHip LBP vs Control | Muscle strength EXTKnee LBP vs Control | Muscle strength FLXKnee LBP vs Control | Results |
|---|---|---|---|---|---|---|---|---|
| Bussey et al, 2016 | Nm/ kg | R (1.6 vs 1.7) L (1.5 vs 1.6) | NA | NA | NA | NA | NA | There is no difference in hip-abduction strength between LBP patients compared with healthy controls. (p=.843). |
| Cooper et al, 2015 | MMT 0-5 | AS (3.4 vs 4.5) US (4.6 vs 4.5) | NA | NA | AS (4.8 vs 4.5) US (4.9 vs 4.5) | NA | NA | Hip-abduction strength in affected side was significantly lower in LBP patients compared with healthy controls p<.001). |
| Cai & Kong, 2015 | Nm/kg | M (1.5 vs 1.5) F (1.1 vs 1.2) | NA | M (1.3 vs 1.5) F (1.3 vs 1.2) | M (2.1 vs 2.6) F (2.0 vs 2.3) | NA | Knee extensor strength was significantly lower in LBP patients compared with healthy controls (p=.016). | |
| Sutherlin & Hart, 2015 | Nm/kg | (1.6 vs 1.6) | NA | NA | NA | NA | NA | There is no difference in hip-abduction strength between LBP patients compared with healthy controls. (p=.944). |
| Penney et al, 2014 | N/Kg | R (1.0 vs 1.4) L (1.0 vs 1.2) | NA | NA | NA | NA | NA | Hip-abduction strength in right and left side were significantly lower in LBP patients compared with healthy controls (p<.05) |
| Yahia et al, 2011 | Nm | NA | NA | NA | NA |
60º (54.4 vs 103.7) 120º (48.5 vs 67.4) |
60º (87.7 vs 124.6) 120º (71.1 vs 98.5) |
Knee flexors and extensors strength at speeds 60 to 120ºs were significantly lower in LBP patients compared with healthy controls (p<0.05). |
| Arab et al, 2010 | Kpa | (27.5 vs 33.5) | NA | NA | NA | NA | NA | Hip-abduction strength in was significantly lower in LBP patients compared with healthy controls p<.001). |
| Kendall et al, 2010 | N/kg² | (6.6 vs 9.5) | NA | NA | NA | NA | Hip-abduction strength in was significantly lower in LBP patients compared with healthy controls p<.05). | |
| Marshal et al, 2010 | Nm/kg | NA | NA | NA | NA | NA | C30 (0.9 vs 1.0) C120 (0.7 vs 0.8) E30 (1.2 vs 1.1) E120 (1.1 vs 1.1) |
There is no difference in hamstring concentric and eccentric strength at speeds 30 to 120ºs between LBP patients compared with healthy controls. (p>.05). |
| Tsai et al, 2010 | Nm/kg | R (1.4 vs 1.5) L (1.3 vs 1.6) | R (1.2 vs 1.5) L (1.2 vs 1.6) | R (2.6 vs 3.3) L (2.7 vs 3.3) | R (0.6 vs 0.9) L (0.6 vs 0.8) | NA | NA | Left hip-abduction and adduction strength in were significantly lower in LBP patients compared with healthy controls p<.05) |
| Marshal et al, 2009 | Nm/kg | NA | NA | NA | NA | NA | C30 (0.9 vs 1.0) C120 (0.7 vs 0.8) E30 (1.2 vs 1.1) E120 (1.1 vs 1.1) |
There is no difference in hamstring absolute strength between LBP patients compared with healthy controls. (p=.843). |
| Bernard et al, 2008 | min, seg | NA | NA | (1min e 24 seg vs 2min e 20seg) | NA | (1min e 20seg vs 2min e 39seg) | NA | It was observed a statistically significantly difference in the endurance in hip extensors and quadriceps, which were weaker in the LBP group than their controls. The teenagers with LBP obtained 40% hip extensors´ values and 50% Killy´ values lower than in their control group. |
| Nourbakhsh & Arab, 2002 | Kpa | (26 vs 32) | (23 vs 31) | (22 vs 29) | (36 vs 43) | Hip- (abduction, flexion and extension) strength was significantly lower in LBP patients compared with healthy controls p<.05). | ||
| Lee et al, 1995 | Nm | NA | NA | NA | NA | (191.4 vs 264.7) | (109.1 vs 176.3) | Total knee strength was significantly lower in LBP patients compared with healthy controls (p=.016). |
NA, Not assessed; R, right; L, left; M, male; F, female;, AS, affected side; US, unaffected side; GMED, gluteus medius; TFL, tensor fascia lata; GMAX, gluteus maximus: ITBI, Iliotibial Band Tightness; MMT, manual muscle test; C, concentric; E, Eccentric; C30 concentric at 30°/s; C60 concentric at 60°/s; C120 concentric at 120°/s; E30 Eccentric at 30°/s; E60 Eccentric at 60°/s; E120 Eccentric at 120°/s.