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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