Physical Endurance Enhancement of Withania somnifera Milk Treated Powder Compared to Commercial Preparation in Mice Pradhyumna Muralidharan, John Michael.

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Physical Endurance Enhancement of Withania somnifera Milk Treated Powder Compared to Commercial Preparation in Mice Pradhyumna Muralidharan, John Michael D’Cruz, Tomson Toms, Jeffrey Pradeep Raj, Mangala Rao

Background: The duration one can apply energy to an activity is limited by stamina (endurance). Recent studies using extracts of ashwagandha (Withania) root powder, either aqueous or ethanolic suspension, have demonstrated a significant increase in physical endurance. Milk treatment enhances the potency of herbal preparations. Objective: To evaluate the efficacy of milk treated root powder of ashwagandha as compared to standard preparation, in enhancing the physical endurance in mice, using swim endurance model.

Methods: Male, Swiss albino mice (31 – 35 g, 6 – 8 weeks old) were randomized into 3 groups of 6 animals each : Control - Carboxy Methyl Cellulose 0.5%, Standard - commercial preparation of ashwagandha (100mg / Kg), test - milk treated ashwagandha root powder (100 mg/ Kg). Study drugs were administered per oral, once daily, for 7 days. On day 8, animals were allowed to swim in a propylene tank of dimension 40 cm x 25 cm x 15 cm, with water level at 25 cm. The animals were allowed to swim till exhaustion. The end point of swim endurance was when the mice near drowned.

Results: There was a significant increase in the physical endurance in the treatment as compared to control .One way ANOVA (F (2, 15) = 13.000, p = 0.001), Tukey’s post hoc test of milk treated vs standard (p = 0.207) however, was not significant. Conclusion: Milk treated Withania somnifera was not significantly different as compared to the standard preparation, though it was better than the control.

KEYWORDS Antifatigue activity, Glycowithanolides, Swim endurance, Withania somnifera, Physical endurance.

The preliminary conclusion from the study is that milk treatment of ashwagandha roots along with topping up with cold and hot water extracts of ashwagandha does not increase the physical endurance enhancing activity, even though the withanolide content of the preparation was found to be higher in this preparation.