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Table 7 Markers of Free Radical Production and Oxidative Stress

From: Effects of powdered Montmorency tart cherry supplementation on an acute bout of intense lower body strength exercise in resistance trained males

Variable Group Baseline Pre-Lift 60-min Post 24-hr Post 48-hr Post Group Mean p-value (GG) p-value (WSC)
Nitrotyrosine (nM) P 305±267 306±311 297±289 297±330 294±305 300±74 G=0.940  
TC 303±193 319±254 277±190 275±202 283±203 292±78 T=0.280 T L =0.146
Time Mean 304±230 312±279 288±241 287±270 289±256Ψ   G X T=0.613 G X T L =0.483
TBARS (uM) P 7.84±2.69 7.27±2.91 8.60±2.67 8.03±3.34 8.43±3.74 8.03±0.81 G=0.913  
TC 7.74±4.24 8.24±4.03 7.44±3.84 8.19±3.46 7.91±3.35 7.90±0.84 T=0.937 T L =0.539
Time Mean 7.79±3.44 7.73±3.44 8.05±3.26 8.10±3.32 8.18±3.49   G X T=0.569 G X T L =0.649
TAS (mM) P 2.90±1.34 2.83±1.77 3.02±1.85 2.95±1.47 2.80±1.81 2.90±0.39 G=0.752  
TC 2.69±1.17 2.39±1.14 2.99±1.07 2.73±1.36 2.81±1.34 2.72±0.41 T=0.323 T q =0.419
Time Mean 2.80±1.23 2.62±1.48 3.01±1.49 2.84±1.39 2.81±1.57   G X T=0.706 G X T L =0.442
SOD (U/mL) P 0.58±0.07 0.59±0.05 0.59±0.09 0.56±0.08 0.58±0.06 0.58±0.02 G=0.668  
TC 0.55±0.12 0.60±0.09 0.54±0.09 0.57±0.10 0.57±0.11 0.57±0.02 T=0.264 T q =0.827
Time Mean 0.56±0.10 0.60±0.07 0.57±0.09 0.57±0.08 0.58±0.09   G X T=0.335 G X T L =0.784
  1. Individual group and time data expressed as means ± SD, while group effects are presented as means ± SEM. Data represents the response to reactive oxygen and nitrogen species production in addition to antioxidant activity at each test session during the 10 day intervention. MANOVA analysis revealed overall Wilks' Lambda time (p=0.321) and group x time (p=0.756). Univariate ANOVA p-levels from MANOVA analysis are presented for each variable. Univariate ANOVA p-levels are listed first by the Greenhouse-Geisser (GG) analysis and then by the within-subjects contrasts (WSC) to demonstrate the potential shape of the time or group x time interaction with significance indicated by the following super/subscripts: * indicates p<0.05 p-level significance, § indicates p<0.10 p-level significance. LSD post hoc analysis is indicated by the following superscripts: ^ represents p<0.05 difference between groups, † represents p<0.05 difference from baseline value, Ψ represents p<0.05 difference from pre-lift, represents p<0.05 difference from 60-min post, # represents p<0.05 difference from 24-hr post
  2. TBARS Thiobarbituric acid reactive substances, TAS Total antioxidant status, SOD superoxide dismutase, G group p-level, T time p-level, G x T interaction, q quadratic p-level, L linear p-level