Thiamin, riboflavin and vitamin B6: impact of restricted intake on physical performance in man.

Abstract

The absence of vitamin-specific effects on performance decrements due to thiamin, riboflavin and vitamin B6 restriction suggests quantitatively similar but non-additive effects of these B-vitamins on mitochondrial metabolism.

Nutritional status and physical fitness of elderly sportsmen

“…Magnesium could contribute to the facilitation of the oxygen delivery to the working muscle by production of 2,3-diphosphoglycerate in the erythrocytes. A similar relationship between O 2max and vitamin intakes (B1, B2, B6 and C) has been assessed by Van der Beek et al (1988) and Van Der Beek (1991) in a group of 24 young men (23 3 years) arti®cially maintained in a de®cit status. After 11 weeks, O 2max decreased by 11.6%.…”

Cortitrol supplementation reduces serum cortisol responses to physical stress

“…The first component is a general vitamin/mineral combination of pantothenic acid (30 mg), pyridoxine (10 mg), riboflavin (8.5 mg), thiamine (7.5 mg), vitamin C (250 mg), calcium (100 mg), and magnesium (100 mg). B vitamins (pantothenic acid, pyridoxine, riboflavin, and thiamine) were added to prevent deficiencies common in active individuals [1], which have been shown to decrease V o 2 max, onset of blood lactate accumulation, peak power, and mean power [2]. Vitamin C supplementation has the potential to reduce blood pressure, cortisol, and subjective responses to acute psychological stress in healthy subjects [3], as well as exercise stress responses in competitive weightlifters [4].…”

Estimation of vitamin needs—riboflavin, vitamin B6 and ascorbic acid-according to blood parameters and functional-cognitive and emotional indices in a selected well-established group of elderly in a home for the aged in Israel.

“…The impact of vitamin status on functional capacities has been described in some studies. In other studies no effect of marginal vitamin depletion or of vitamin supplementation was found on physical performance of elderly women [54] or young subjects (23 years of age) [55]. Although data from 30 human studies were summarized in a workshop discussing this issue, no clear set of conclusions was drawn regarding the effect of micronutrient intake on physical work capacity [9].…”