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Table 5 Regression of pressure pain threshold of trapezius in CON using the intramuscular variables (R 2= 0.39)

From: Algogenic substances and metabolic status in work-related Trapezius Myalgia: a multivariate explorative study

Variable Timepoint VIP Sign of coeff
Blood flow 150 min 1.73 +
  170 min 1.90 +
  190 min 1.94 +
  210 min 2.40 +
  310 min 1.45 +
  325 min 1.62 +
  335 min 1.59 +
  345 min 1.95 +
  355 min 1.16 +
OHB 21-40 min 1.28 -
  PEG-0-20 min 1.67 -
  recov1 1.20 +
THB PEG-0-20 min 1.38 -
  21-40 min 1.12 +
  recov1 1.29 +
[Lactate] 190 min 1.17 +
  210 min 1.37 +
[Glucose] 310 min 1.43 +
  345 min 1.04 +
[Glutamate] 170 min 1.54 +
[BKN] 170 min 1.12 +
[IL-6] 210 min 1.50 +
  310 min 1.42 +
  325 min 1.06 +
  355 min 1.17 +
[K + ] 150 min 1.73 +
  210 min 1.71 +
  325 min 2.21 +
  335 min 1.35 +
  345 min 1.52 +
  355 min 1.57 +
[5-HT]   1.45 -
[PINP]   1.39 -
  1. [substance] denotes concentration of the substance. OHB = oxyhaemoglobin, THb = total haemoglobin, BKN = Bradykinin, IL-6 = interleukin 6, K+ = potassium, 5-HT = serotonin, PINP = N-terminal propeptide of procollagen type I, PEG = repetitive low-force exercise performed unilaterally on a pegboard.
  2. VIP values and sign of coefficient (coeff) are given. Note that the variables are grouped and sorted within each variable with respect to time point. A positive coefficient indicates that this variable will be associated with high PPT values and vice versa. Note the inverse construction of blood flow variables.