Sup­ple­ments That Don’t Help

Health & Nutrition - - FITNESS FORUM -

High doses of vi­ta­mins C and E may ac­tu­ally re­duce the ben­e­fi­cial train­ing ef­fects of ex­er­cise. In a Nor­we­gian study of 54 peo­ple in their twen­ties, half took 1,000 mil­ligrams of vi­ta­min C and about 350 IU of vi­ta­min E a day while do­ing an en­durance train­ing pro­gramme; the other half took a placebo. After 11 weeks, test­ing re­vealed that the sup­ple­ment group ex­pe­ri­enced re­duc­tions in ben­e­fi­cial cel­lu­lar adap­ta­tions to ex­er­cise com­pared to the placebo group. In par­tic­u­lar, they had much smaller in­creases in mark­ers for the pro­duc­tion of new mus­cle mi­to­chon­dria (the pow­er­houses of cells). Pre­vi­ous stud­ies have also found that the vi­ta­mins can blunt some of the ben­e­fits of ex­er­cise – for in­stance, its abil­ity to im­prove in­sulin sen­si­tiv­ity and boost the body’s nat­u­ral an­tiox­i­dant sys­tem.

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