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Table 1 Descriptive data of participants

From: The potential use of spectral electromyographic fatigue as a screening and outcome monitoring tool of sarcopenic back muscle alterations

Average from 3 test days Mean (SE) Age Gender Age X Gender Age and gender dependant differences
   F; p-value F; p-value F; p-value Mean (95% CI)
      Age Gender
Age (years) <50 33.14 (1.66)      
>50 67.11 (1.55)      
BMI (kg/m 2 ) <50 24.11 (0.47)      
>50 25.15 (0.45)      
IPAQ <50 337.15 (60.25)      
>50 424.09 (59.07)      
Position of lever arm* (degrees) <50 47.2 (13.7)      
>50 46.7 (10.0)      
Lumbar/Thoracic (Nm):       
Extension torque <50 242.67 (11.65) 02.00; 0.16 74.81; < 0.01 0.04; 0.84 23.98 (-5.66; 54.71) 102.85 (80.67;125.56)
>50 218.68 (11.19)
Participants’ anticipatory feelings and emotions:      
Positive emotions <50 05.23 (0.29) 00.61; 0.44 02.57; 0.11 0.01; 0.91 0.37 (-0.43; 1.19) 0.68 (-0.11; 1.48)
>50 04.87 (0.29)
Negative emotions <50 00.63 (0.12) 01.44; 0.23 01.00; 0.32 0.61; 0.44 0.21 (-0.12; 0.54) 0.18 (-0.14; 0.49)
>50 00.42 (0.12)
Motivation <50 05.90 (0.31) 00.30; 0.58 01.99; 0.16 0.78; 0.38 0.28 (-0.47; 1.04) 0.62 (-0.13; 1.45)
  >50 05.62 (0.27)      
  1. *Lever arm position data at the beginning of the sustained trunk extension were acquired from an accelerometer (Trigno, DelSys, MA, Boston) attached to the lever arm in a standardized way. Note that the degrees provided represent absolute values and relate to a 30° trunk anteflexion in the dynamometer.
  2. Means and standard error are provided. This table further provides results of two-way ANOVAS (age, gender) of data from psychological testing, and the lever arm positions during the sustained contraction.