A Study to Evaluate the Efficacy and Safety of K-285 Compared With Menthol Gel for the Treatment of Delayed Onset Muscle Soreness (DOMS) in the Lower Extremity

Inclusion Criteria: * Subject must provide informed consent before any study-specific evaluation is performed. * Subject is male and female aged 18 to 35 years, inclusive. * Subject has a body mass index of 18 to 32 kg/m2, inclusive. * Subject meets all inclusion criteria outlined in the Clinical Study Protocol. Exclusion Criteria: * Subject has a job (e.g., movers, construction workers) that requires regular lifting or involvement of the lower extremities. * Subject has restless leg syndrome, a chronic pain condition, a history of intermittent claudication, or has taken any medication (e.g., analgesic medication, sleep medication, muscle relaxant, anticonvulsant, or antidepressant) in the last 6 months to treat a chronic pain condition, or has another painful physical condition in a lower extremity that, in the opinion of the investigator, may confound study assessments. * Subject has received oral or topical analgesic medications within 14 days before the Screening Visit. * Subject meet any other exclusion criteria outlined in the Clinical Study Protocol.