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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).