Table 1
Ventilatory parameters. Data are means (±).
Peak power
M
F1
F2
Power (W)
240 (75)
243 (77)
253 (82)
VO
2peak
(mL
.
kg
-1.
min
-1
)
42.0 (9.9)
42.3 (9.0)
42.8 (9.3)
V
Epeak
(L
.
min
-1
)
79.1 (20.2)
*
87.1 (24.5)
87.2 (25.0)
Vt
peak
(L)
2.712 (.559)
2.687 (.571)
2.656 (.570)
RR
peak
(breaths
.
min
-1
)
38 (7)
*
41 (7)
41 (8)
Exercise time (min)
10.32 (2.59)
10.58 (2.35)
10.74 (2.52)
HR (beats
.
min
-1
)
172 (16)
176 (16)
175 (16)
RER
1.24 (.13)
1.29 (.25)
1.26 (.12)
75% peak power
Power (W)
169 (49)
175 (53)
173 (53)
VO
2
(mL
.
kg
-1.
min
-1
)
31.4 (7.0)
32.0 (7.5)
31.9 (7.4)
V
E
(L
.
min
-1
)
49.2 (11.5)
51.7 (13.8)
51.5 (14.7)
Vt (L)
2.333 (.505)
2.363 (.493)
2.295 (.506)
RR (breaths
.
min
-1
)
27 (7)
28 (7)
29 (7)
Exercise time (min)
7.83 (1.92)
8.01 (1.90)
8.06 (2.06)
HR (beats
.
min
-1
)
151 (16)
156 (15)
155 (18)
RER
1.10 (.10)
1.14 (.17)
1.11 (.09)
25% peak power
Power (W)
63 (43)
67 (45)
66 (44)
VO
2
(mL
.
kg
-1.
min
-1
)
15.6 (5.5)
15.5 (5.2)
15.5 (5.0)
V
E
(L
.
min
-1
)
22.6 (8.7)
21.9 (8.5)
22.3 (7.9)
Vt (L)
1.416 (.549)
1.470 (.553)
1.468 (.504)
RR (breaths
.
min
-1
)
21 (5)
20 (4)
20 (4)
Exercise time (min)
4.00 (2.12)
3.95 (2.14)
4.17 (2.23)
HR (beats
.
min
-1
)
107 (12)
109 (14)
111 (16)
RER
.91 (.09)
.89 (.09)
.91 (.08)
M: mouthpiece
F1: first facemask trial
F2: second facemask trial
Vt: tidal volume
HR: heart rate
RER: respiratory exchange ratio
* denotes a significant difference from F1 and F2.