| |
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
|
- 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).
