title: Long-term physical activity modulates brain processing of somatosensory stimuli: Evidence from young male twins.
abstract: Leisure-time physical activity is a key contributor to physical and mental health. Yet the role of physical activity in modulating cortical function is poorly known. We investigated whether precognitive sensory brain functions are associated with the level of physical activity. Physical activity history (3-yr-LTMET), physiological measures and somatosensory mismatch response (sMMR) in EEG were recorded in 32 young healthy twins. In all participants, 3-yr-LTMET correlated negatively with body fat%, r=-0.77 and positively with VO2max, r=0.82. The fat% and VO2max differed between 15 physically active and 17 inactive participants. Trend toward larger sMMR was seen in inactive compared to active participants. This finding was significant in a pairwise comparison of 9 monozygotic twin pairs discordant for physical activity. Larger sMMR reflecting stronger synchronous neural activity may reveal diminished gating of precognitive somatosensory information in physically inactive healthy young men compared to the active ones possibly rendering them more vulnerable to somatosensory distractions from their surroundings.
authors: Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland. Electronic address: Ina.Tarkka@jyu.fi.
authors: Ina M
authors: IM
authors: Tarkka
authors: School of Electrical Engineering, University of Belgrade, Belgrade, Serbia; Tecnalia Serbia Ltd., Belgrade, Serbia.
authors: Andrej
authors: A
authors: Savić
authors: Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
authors: Elina
authors: E
authors: Pekkola
authors: Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
authors: Mirva
authors: M
authors: Rottensteiner
authors: Turku PET Center, University of Turku, Turku, Finland.
authors: Tuija
authors: T
authors: Leskinen
authors: Department of Public Health and Institute for Molecular Medicine FIMM, University of Helsinki, Helsinki, Finland; National Institute for Health & Welfare, Helsinki, Finland.
authors: Jaakko
authors: J
authors: Kaprio
authors: Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
authors: Urho M
authors: UM
authors: Kujala
mesh_terms: D000328:Adult; D005071:Evoked Potentials / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005260:Female; D000070497:Healthy Lifestyle / Q000502:physiology*; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology; D013003:Somatosensory Cortex / Q000502:physiology*
keywords: Human electrophysiology; Physical exercise; Precognitive brain function; Somatosensory cortex; Somatosensory mismatch response