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Table 1 Description and results from previous reliability studies

From: Inter-day reliability of surface electromyography recordings of the lumbar part of erector spinae longissimus and trapezius descendens during box lifting

Study n Test positions Body segment - muscle Movement Reliability
Schinkel-Ivy et al. (2015) 30 with no history of back pain Maximum flexion Back - Lumbar erector spinae (left and Right) Flexion ICC = 0.93-0.95, SEM (%) = 9.9
(15 female and 15 males) Maximum axial twist Back - Lumbar erector spinae (left and Right) Twisting ICC = 0.87-0.92, SEM (%) = 17.3-20.3
Maximum flexion Back - Lower-thoracic erector spinae (left and Right) Flexion ICC = 0.84-0.89, SEM (%) = 19.3-19.5
Maximum axial twist Back - Lower-thoracic erector spinae (left and Right) Twisting ICC = 0.82-0.93, SEM(%) = 17.6-24
Andersen KS et al. (2014) 24 healthy Arm flexion (45°) Shoulder - Trapezius superior Isometric ICC absEMG = 0.88, ICC nEMG = 0.72
(14 women and 10 men) Arm flexion (90°) Shoulder - Trapezius superior Isometric ICC absEMG = 0.82, ICC nEMG = 0.60
Arm abduction Shoulder - Trapezius superior Isometric ICC absEMG = 0.90, ICC nEMG = 0.72
Arm flexion Shoulder - Trapezius superior Dynamic ICC absEMG = 0.99, ICC nEMG = 0.96
Michener et al. (2016) 12 with shoulder pain Scapular plane elevation Sholuder - Upper trapezius Ascending phase (30°-120°) (% ref) ICC = 0.53, SEM = 21.4, MDC = 30.3
(8 male and 4 women) Scapular plane elevation Sholuder - Upper trapezius Descending phase (30°-120°) (% ref) ICC = 0.81, SEM = 7.0, MDC = 10.3
Ghofrani et al. (2017) 7 Box lifting from floor to table Back - Erector spinae (left and right) Dynamic ICC = 0.45-0.83, SEM = 34.22-119.22
(Males)
Seitz & Uhl (2012) 16 with no shoulder pain Overhead lifting task Shoulder - Upper trapezius Concentric phase (%MVIC) Intra-session; ICC = 0.98, SEM = 1.7, MDC = 2.5
Inter-session; ICC = 0.66, SEM = 8.0, MDC = 11.4
(8 females and 8 males) Overhead lifting task Shoulder - Upper trapezius Eccentric phase (%MVIC) Intra-session; ICC = 0.96, SEM = 1.3, MDC = 1.9
Inter-session; ICC = 0.78, SEM = 3.5, MDC = 4.9