Table 3

Summary of previous studies of caffeine effects during submaximal exercise

Study
 Caffeine use
 Caffeine
 % of VO2max
 Mode
 Effects of caffeine on HR
 Systolic Blood Pressure
A
 Bangsbo (1992)
 n = 11 not reported
 500 mg
 80–100
 Treadmill
 No diff
 Not studied
B
 Bell (1998)
 n = 8 habitual
 5 mg/kg
 85
 Cycle
 ↑ at 5 min; not at 10 min
 Not studied
C
 Bell (2002)
 n = 8 non-habitual n = 13 habitual
 5 mg/kg
 50 & 80
 Cycle
 No diff at 50%
↑ at 80% for both h + nh
 Not studied
D
 Bell et al (2003)
 n = 9 habitual
 5 mg/kg
 80
 Cycle
 No diff
 Not studied
E
 Casal et al (1985)
 n = 9 not reported
 6 mg/kg
 75
 Treadmill
 No diff
 Not studied
F
 Daniels et al (1998)
 n = 10 non-habitual
 6 mg/kg
 65
 Cycle
 No diff
 Higher with caffeine
G
 Engels et al (1999)
 n = 8 habitual
 5 mg/kg
 30
 Cycle
 No diff
 Higher with caffeine
H
 Flinn et al (1990)
 n = 9 non-habitual
 10 mg/kg
 40–100
 Cycle
 No diff
 Not studied
I
 French et al (1991)
 n = 6 non-habitual
 10 mg/kg
 75
 Treadmill
 No diff
 Not studied
J
 Gaesser GA (1985)
 n = 8 habitual
 5 mg/kg
 37–100
 Cycle
 ↓ at 37–77% max, no diff at max
 Not studied
K
 Graham et al (2000)
 n = 9 non-habitual
 6 mg/kg
 70
 Cycle
 No diff
 Higher with caffeine
L
 Jacobsen et al (2001)
 n = 8 non-habitual
 6 mg/kg
 70
 Cycle
 No diff
 Not studied
M
 Kaminsky (1998)
 n = 8 non-habitual n = 8 habitual
 5 kg/mg
 30, 50, 70
 Treadmill
 No diff
 Higher for both groups with caffeine
N
 McNaughton (1987)
 n = 10 non-habitual
 10 + 15 mg/kg
 Not reported
 Cycle
 ↑ Higher with caffeine
 Not studied
O
 Nishijima (2002)
 n = 8 habitual
 300 mg
 40–50
 Cycle
 Not measured
 No diff
P
 Perkins R (1975)
 n = 14 not reported
 4 + 7 + 10 mg/kg
 50–100
 Cycle
 No diff for any doses
 Not studied
Q
 Powers (1983)
 n = 7 not reported
 5 mg/kg
 25 – 100
 Cycle
 No diff
 Not studied
R
 Sasaki (1987)
 n = 7 not reported
 3.2 mg/kg
 63
 Treadmill
 ↑ Higher with caffeine
 Not studied
S
 Sullivan et al (1992)
 n = 5 non-habitual n = 5 habitual
 3.3 mg/kg
 45
 Treadmill
 ↓ for non-habitual
No diff for habitual
 Higher for both groups with caffeine
T
 Sung et al (1990)
 n = 34 habitual
 5 mg/kg
 25 & 50
 Cycle
 No diff
 Higher with caffeine
U
 Sung et al (1995)
 n = 12 habitual
 3.3 mg/kg
 Not reported
 Cycle
 No diff
 Higher with caffeine
V
 Tarnopolosky (1989)
 n = 6 habitual
 6 mg/kg
 70
 Treadmill
 No diff
 Not studied
W
 Trice et al (1993)
 n = 8 habitual
 5 mg/kg
 85–90
 Cycle
 No diff
 Not studied
X
 Turley & Gerst (2006)
 n = 52 not reported
 5 mg/kg
 65% of max hr 75% of max hr
 Cycle
 ↓ for boys & girls at 65%
↓ for boys & girls at 75%
 ↑ for boys at 65%
↓ for girls at 75%
Y
 Weir et al (1987)
 n = 6 not reported
 6.5 mg/kg
 72–76
 Treadmill
 No diff
 Not studied
McClaran (present study)
 n = 9 non-habitual
 1.5 + 3 mg/kg
 30, 46, 63
 Cycle
 ↓ at 30-63% max
 No diff

All studies used adults as subjects except Turley & Gerst (2006)

McClaran and Wetter Journal of the International Society of Sports Nutrition 2007 4:11   doi:10.1186/1550-2783-4-11

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