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The effect of foot-bath with or without the essential oil of lavender on the autonomic nervous system: a randomized trial.

Abstract Title: The effect of foot-bath with or without the essential oil of lavender on the autonomic nervous system: a randomized trial. Abstract Source: Complement Ther Med. 2000 Mar ;8(1):2-7. PMID: 10812753 Abstract Author(s): Y Saeki Article Affiliation: Department of Anatomy and Physiology, Nagano College of Nursing, Japan. Abstract: OBJECTIVES: This study was designed to investigate the effect of foot-bath with or without the essential oil of lavender on the autonomic nervous system. DESIGN: Randomized crossover controlled study. SETTING: Nursing college, Nagano, Japan. INTERVENTION: Young women sat with their feet soaked in hot water for 10 minutes with and without the essential oil. OUTCOME MEASURES: An electrocardiogram, finger tip blood flow and respiratory rate were recorded. Autonomic function was evaluated using spectral analysis of heart rate variability. RESULTS: The foot-bath caused no changes in heart or respiratory rates, but produced a significant increase in blood flow. Using spectral analysis, the parasympathetic nerve activity increased significantly during the both types of foot-bath. In the case of the foot-bath with the addition of essential oil of lavender, there were delayed changes to the balance of autonomic activity in the direction associated with relaxation. CONCLUSION: A hot foot-bath and oil of lavender appear to be associated with small but significant changes in autonomic activity. Article Published Date : Mar 01, 2000
Therapeutic Actions Hot Water Bath

NCBI pubmed

Passive Heating: Reviewing Practical Heat Acclimation Strategies for Endurance Athletes.

Related Articles Passive Heating: Reviewing Practical Heat Acclimation Strategies for Endurance Athletes. Front Physiol. 2018;9:1851 Authors: Heathcote SL, Hassmén P, Zhou S, Stevens CJ Abstract Heat acclimation protocols-both active and passive-have been employed by athletes in an effort to attenuate the detrimental effects of heat stress on physical capacities and sports performance. Active strategies have been extensively reviewed, but have various practical and economic limitations. The purpose of this review was therefore to provide an overview of the passive strategies that have received less attention, yet may be more practical or economically viable; recommendations for athletes are also provided. With a systematic search of the relevant databases ending in June 2018, 16 articles on passive heat acclimation that met the inclusion criteria were included in the review. The review highlighted that passive heat acclimation strategies can successfully induce heat adaptations, evident by reports of improved exercise performance, thermoregulatory, cardiovascular, and perceptual responses accompanying such interventions. Based on the review it is apparent that the use of sauna, hot-water immersion and environmental chambers may be used to provide heat stress under passive conditions, for the purpose of acclimation. To maximize the thermoregulatory-adaptive responses, exercise bouts should be employed prior to passive heat stress, rather than passive heating alone, with a minimal delay between exercise and the application of heat stress. Heating bouts should have a minimum duration of 30 min per session and be employed on consecutive days, when possible, with a minimum of 6-7 exposures to induce adaptation. This review identified that information regarding the magnitude of performance changes that can occur, as well as the perceptual responses to passive heating protocols is limited. Future research should investigate the use of passive heat exposures before and/or after repeated heat training sessions, to assess if a further boost to heat adaptation can be achieved with this strategy. PMID: 30618849 [PubMed]
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