--- abstract: 'The present study was carried out on 100 volunteers of which 50 subjects with BMI > 30kg/m2 were included in study group and 50 subjects with BMI < 30kg/m2 (non obese) were included in control group. The functioning of Autonomic nervous system was evaluated by six non-invasive tests- four of which were based mainly on parasympathetic control (30:15 ratio, standing to lying ratio (S/L ratio), expiration/inspiration ratio (E/I ratio) and valsalva maneuver) and two on sympathetic control (Blood pressure response to standing and cold pressor test). The results of the present study showed significantly low (p=0.001) S/L ratio in study group (1.04 ± 0.12) when compared to controls (1.12 ± 0.11) indicating impaired parasympathetic function. The mean change in sytolic blood pressure before and after cold pressor test (CPT) was less in study group (7.12 ± 5.28) as compared to control group (10.38 ± 6.35) and this was statistically significant (p=0.006) indicating impaired sympatheitc function. Thus ,in obese both division of ANS are affected which may be the cause of various cardiovascular complications.' altloc: [] chapter: ~ commentary: ~ commref: ~ confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: [] creators_name: - family: 'Simran Grewal, Vidushi Gupta' given: 'Int J Cur Bio Med Sci. ' honourific: '' lineage: '' date: 2011-04-30 date_type: published datestamp: 2011-05-02 15:53:03 department: ~ dir: disk0/00/00/73/14 edit_lock_since: ~ edit_lock_until: 0 edit_lock_user: ~ editors_id: [] editors_name: [] eprint_status: archive eprintid: 7314 fileinfo: /style/images/fileicons/application_pdf.png;/7314/1/Effect_of_obesity_on_autonomic_nervous_system.pdf full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: pub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'autonomic functions tests, autonomic nervous system, Body mass index, cold pressor test, obesity, valsalva manoeuver' lastmod: 2011-05-02 15:53:03 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: 2 pagerange: 15-18 pubdom: TRUE publication: 'Int J Cur Bio Med Sci. 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