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Effects of a mineral antioxidant complex on clinical safety, body water, lactate response, and aerobic performance in response to exhaustive exercise

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journal contribution
posted on 06.12.2017, 00:00 by Vincent DalboVincent Dalbo, M Roberts, S Hassell, J Moon, C Kerksick
This investigation examined the safety and efficacy of a silica-based mineral antioxidant complex (MAC) that has been suggested to influence body water and buffer lactate. Methods: In a double-blind, randomized crossover design, male participants completed testing for 3 conditions: water only (baseline), rice flour (placebo), and MAC supplementation. Participants visited the laboratory on 5 occasions: familiarization, baseline, Testing Day 1, washout, and Testing Day 2. Baseline and Testing Days 1 and 2 consisted of fasting blood, pre- to postexercise body-water assessment and determination of VO2peak on a cycle ergometer. The supplementation protocols were separated by 1 wk and balanced to minimize an order effect. Results: No differences between conditions were found for heart rate, blood pressure, or serum-safety markers (p > .05). Before exercise there were no differences between conditions for total body water (TBW), intracellular water (ICW), or extracellular water (ECW). No significant interactive effects for supplementation and exercise were found for TBW, ICW, or ECW (p > .05). A time effect for TBW (p < .01) and ICW (p < .001) was present. Within-group changes in TBW occurred in the MAC condition, and within-group changes for ICW occurred in the MAC and placebo conditions. Ratings of perceived exertion and blood lactate increased (p < .05) with exercise. No significant effects were found for performance variables. Conclusions: MAC supplementation had no impact on aerobic exercise performance and lactate response. Increases in TBW and ICW occurred after MAC consumption, but these changes appeared to have minimal physiological impact.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

20

Issue

5

Start Page

381

End Page

392

Number of Pages

12

eISSN

1543-2742

ISSN

1526-484X

Location

USA

Publisher

Human Kinetics

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Faculty of Sciences, Engineering and Health; Institute for Health and Social Science Research (IHSSR); University of Oklahoma;

Era Eligible

Yes

Journal

International journal of sport nutrition and exercise metabolism.

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