Abstract
Using a double-blind, cross-over design, we examined the effect of the consumption of an antioxidant-forrified energy bar on select components of the oxidative defense system and indices of oxidative damage in male subjects engaged in strenuous exercise. Sixteen men, 19-34 y of age, running 20-25 miles/wk, consumed 2 bars/d of either a fortified-energy bar (F-Bar) or a non-fortified bar (NF-Bar) for 6 wk followed by an 8 wk washout period and a subsequent cross-over for an additional 6 wk. The bars were identical in macronutrient content, taste and appearance except that the F-Bar was fortified with ascorbic acid (94 mg), a-tocopherol acetate (43 mg), a mixture of a- and -carotene (7.4 mg), and curcumin (50 mg). At the beginning and end of each new treatment, subjects performed a treadmill test consisting of a 30 min run at 80% VÖ2 max, followed by a continuous ramp to exhaustion within 5 min. Consumption of the F-Bar resulted in increased plasma levels of antioxidants e.g. a-tocopherol, ascorbic acid and carotenes. Plasma ascorbic acid levels further increased immediately after exercise at all testing weeks and returned to pre-exercise levels by 24 h. a-Tocopherol levels increased as a result of exercise in subjects consuming the F-Bar, but not the NF-Bar. The consumption of the F-Bar was functionally significant in enhancing oxidative defense as evidenced by a reduction in exercise-induced increases in RBC and plasma SOD activities, in plasma TBARS and carbonyls, and LDL oxidation. These results suggest that the consumption of antioxidant-fortified foods can benefit individuals engaged in strenuous exercise.
| Original language | English (US) |
|---|---|
| Journal | FASEB Journal |
| Volume | 10 |
| Issue number | 3 |
| State | Published - 1996 |
Fingerprint
ASJC Scopus subject areas
- Agricultural and Biological Sciences (miscellaneous)
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Cell Biology
Cite this
An antioxidant-fortified energy bar can reduce exercise-induced oxidative stress. / Camplen, L. M.; Olin, K. L.; Schmilz, H. H.; Applegate, L. A.; German, J. B.; Shaffrath, J. D.; Emenhiser, C.; Schwanz, S. J.; Keen, Carl L.
In: FASEB Journal, Vol. 10, No. 3, 1996.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An antioxidant-fortified energy bar can reduce exercise-induced oxidative stress
AU - Camplen, L. M.
AU - Olin, K. L.
AU - Schmilz, H. H.
AU - Applegate, L. A.
AU - German, J. B.
AU - Shaffrath, J. D.
AU - Emenhiser, C.
AU - Schwanz, S. J.
AU - Keen, Carl L
PY - 1996
Y1 - 1996
N2 - Using a double-blind, cross-over design, we examined the effect of the consumption of an antioxidant-forrified energy bar on select components of the oxidative defense system and indices of oxidative damage in male subjects engaged in strenuous exercise. Sixteen men, 19-34 y of age, running 20-25 miles/wk, consumed 2 bars/d of either a fortified-energy bar (F-Bar) or a non-fortified bar (NF-Bar) for 6 wk followed by an 8 wk washout period and a subsequent cross-over for an additional 6 wk. The bars were identical in macronutrient content, taste and appearance except that the F-Bar was fortified with ascorbic acid (94 mg), a-tocopherol acetate (43 mg), a mixture of a- and -carotene (7.4 mg), and curcumin (50 mg). At the beginning and end of each new treatment, subjects performed a treadmill test consisting of a 30 min run at 80% VÖ2 max, followed by a continuous ramp to exhaustion within 5 min. Consumption of the F-Bar resulted in increased plasma levels of antioxidants e.g. a-tocopherol, ascorbic acid and carotenes. Plasma ascorbic acid levels further increased immediately after exercise at all testing weeks and returned to pre-exercise levels by 24 h. a-Tocopherol levels increased as a result of exercise in subjects consuming the F-Bar, but not the NF-Bar. The consumption of the F-Bar was functionally significant in enhancing oxidative defense as evidenced by a reduction in exercise-induced increases in RBC and plasma SOD activities, in plasma TBARS and carbonyls, and LDL oxidation. These results suggest that the consumption of antioxidant-fortified foods can benefit individuals engaged in strenuous exercise.
AB - Using a double-blind, cross-over design, we examined the effect of the consumption of an antioxidant-forrified energy bar on select components of the oxidative defense system and indices of oxidative damage in male subjects engaged in strenuous exercise. Sixteen men, 19-34 y of age, running 20-25 miles/wk, consumed 2 bars/d of either a fortified-energy bar (F-Bar) or a non-fortified bar (NF-Bar) for 6 wk followed by an 8 wk washout period and a subsequent cross-over for an additional 6 wk. The bars were identical in macronutrient content, taste and appearance except that the F-Bar was fortified with ascorbic acid (94 mg), a-tocopherol acetate (43 mg), a mixture of a- and -carotene (7.4 mg), and curcumin (50 mg). At the beginning and end of each new treatment, subjects performed a treadmill test consisting of a 30 min run at 80% VÖ2 max, followed by a continuous ramp to exhaustion within 5 min. Consumption of the F-Bar resulted in increased plasma levels of antioxidants e.g. a-tocopherol, ascorbic acid and carotenes. Plasma ascorbic acid levels further increased immediately after exercise at all testing weeks and returned to pre-exercise levels by 24 h. a-Tocopherol levels increased as a result of exercise in subjects consuming the F-Bar, but not the NF-Bar. The consumption of the F-Bar was functionally significant in enhancing oxidative defense as evidenced by a reduction in exercise-induced increases in RBC and plasma SOD activities, in plasma TBARS and carbonyls, and LDL oxidation. These results suggest that the consumption of antioxidant-fortified foods can benefit individuals engaged in strenuous exercise.
UR - http://www.scopus.com/inward/record.url?scp=6844254369&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=6844254369&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:6844254369
VL - 10
JO - FASEB Journal
JF - FASEB Journal
SN - 0892-6638
IS - 3
ER -