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Table 2 Assessment of oxygen uptake, mean heart rate, perceived exertion and blood pressure related to submaximal exercise

From: The effect of a decaffeinated green tea extract formula on fat oxidation, body composition and exercise performance

  PL (n = 7) dGTE (n = 7)
Variable Week 0 Week 2 Week 4 Week 0 Week 2 Week 4
$$ \dot{\mathrm{V}}{\mathrm{O}}_2 $$ (L·min−1) 1.55 ± 0.08 1.51 ± 0.08 1.52 ± 0.06 1.46 ± 0.04 1.44 ± 0.04 1.44 ± 0.05
$$ \dot{\mathrm{V}}{\mathrm{CO}}_2 $$ (L·min−1) 1.38 ± 0.06 1.35 ± 0.06 1.35 ± 0.05 1.31 ± 0.05 1.29 ± 0.03 1.25 ± 0.05
RER 0.89 ± 0.01 0.89 ± 0.01 0.89 ± 0.01 0.90 ± 0.01 0.89 ± 0.01 0.87 ± 0.01 1 A,B
HR (b·min−1) 127.8 ± 5.5 122.7 ± 4.4 121.5 ± 3.8 124.9 ± 3.7 117.0 ± 2.5 113.9 ± 4.0 1 B
RPE (6–20) 11.1 ± 0.8 11.7 ± 0.6 11.6 ± 0.3 11.9 ± 0.4 11.2 ± 0.4 10.0 ± 0.6* A
SBP (mm Hg) 132.7 ± 2.9 127.4 ± 3.0 127.7 ± 2.9 132.3 ± 2.4 127.6 ± 1.8 126.3 ± 2.9
DBP (mm Hg) 80.1 ± 3.3 74.7 ± 1.9 73.0 ± 2.0 74.4 ± 1.8 76.6 ± 5.1 70.1 ± 3.5
  1. Table 2 demonstrates the influence of the dGTE on cardio-respiratory measures during submaximal steady state exercise across the intervention. Data are presented as mean ± SE. PL, Placebo; dGTE, decaffeinated green tea extract; $$ \dot{\mathrm{V}}{\mathrm{O}}_2 $$ , submaximal oxygen uptake; $$ \dot{\mathrm{V}}{\mathrm{CO}}_2 $$ , submaximal expired carbon dioxide; RER, respiratory exchange ratio; HR, heart rate; RPE, rating of perceived exertion; SBP, systolic blood pressure; DBP, diastolic blood pressure. Adenotes significant overall group x time interaction effect (P ≤ 0.05). Bdenotes significant overall time interaction effect only (P ≤ 0.02). 1denotes significant within group time interaction effect only (P ≤ 0.045). *denotes significant difference within group to baseline (P = 0.015).