Clinical Research Directory

Inclusion Criteria: * Ages 13 to 21 years. * Boys or girls. * All ethnicities. * All BMIs. * Previous participation in the Arkansas Active Kids study and the MI Energy study. * Participants who previously agreed to be contacted for future research at ACNC. * Participants who agree to the use of their previously collected information and samples from the AAK or MI Energy studies for the follow-up study. Exclusion Criteria: * Asthma that requires daily use of inhalers to keep symptoms under control. * Asthma that requires use of rescue inhalers (e.g., albuterol) \>2 days per week. * Exercise-induced asthma. * Autism spectrum disorder (e.g., Autistic disorder, Rett disorder, Asperger disorder, childhood disintegrative disorder, pervasive developmental disorder not otherwise specified (PDD-NOS). * Neurological disorders (e.g. epilepsy or seizures). * Cancer. * Hormonal disease (e.g., hypothyroidism and growth hormone deficiency). * Autoimmune diseases (e.g., lupus, thyroiditis, juvenile idiopathic arthritis). * Bleeding disorders (e.g., hemophilia). * Chronic infections (e.g., HIV, hepatitis B, hepatitis C). * Other pre-existing medical conditions or medications as determined by the investigators to affect the outcomes of interest. * Pregnancy (verbal assessment).