Metabolic parameters of lumbar muscle fatigue resistance in lower backpain patients and controls

Abbreviations: Group, patients or matched controls; Gender, (male =2, female = 1); Age, years of age; acetyp, insertion/deletion genotype for polymorphism rs1799752 in the gene of angiotensin concertingy enzyme; tenascin, genotype for polymorphism rs2104772 in the tenascin-C gene; Sportsscore, physical activity levels; Duration, time-to-exhaustion [sec]; SorensenT_accomplished, exercise test duration >240 seconds; Best_Stronghand, handgrip strength dominant side [kg]; Best_Weakhand, handgrip strength minor side [kg]; BMI, body-mass index [kg m-2]; Height, body height [cm]; Weight, body weight [kg]; Smoke, regular smoker [1=yes]; Sportsscore_calc, physical activity levels (full calculation); LAC_baseline, blood lactate concentration at baseline [mM]; LAC_Cessation, blood lactate concentration after exhaustion [mM]; LAC_2min_post, blood lactate concentration 2 minutes after exhaustion [mM]; LAC_2minvs0min_post, delta in blood lactate concentration 2 minutes versus immediately after exhaustion [mM]; LAC_2minvsbase, delta in blood lactate concentration after exhaustion versus baseline [mM]; LAC_max_post, maximal blood lactate concentration after exhaustion [mM]; AUC_D_SmO2_Long, AUC for the delta of oxygen saturation in M. longissimus during isometric lumbar exercise [% sec]; AUC_D_tHb_Long, AUC for the delta of total hemoglobin concentration in M. longissimus during isometric lumbar exercise [g dL-1 sec]; AUC_PP, AUC for the delta of peak blood pressure during isometric lumbar exercise [mm Hg sec]; AUC_MAP, AUC for the delta of mean arterial blood pressure during isometric lumbar exercise [mm Hg sec]; AUC_HR, AUC for the delta of heart rate during isometric lumbar exercise [beats x 60]; AUC_p_t_SmO2_Long, AUC for the delta of oxygen saturation in M. longissimus per time during isometric lumbar exercise [%]; AUC_p_t_tHb_Long, AUC for the delta of total hemoglobin concentration in M. longissimus per time during isometric lumbar exercise [g dL-1]; AUC_p_t_PP, AUC for the delta of peak blood pressure during isometric lumbar exercise [mm Hg]; AUC_p_t_MAP, AUC for the delta of mean arterial blood pressure during isometric lumbar exercise [mm Hg]; AUC_p_t_HR, AUC for the delta of heart rate per time during isometric lumbar exercise [beats per minute]; Fat_longissiumus, thickness in fat of longissimus muscle [cm]; Fat_multifidi, thickness in fat of multifidus muscle [cm]; Fat_Mean, thickness in fat of lumbar muscles [cm].