The Effectiveness of a Conductive Patch and a Conductive Bed Pad in Reducing Induced Human Body Voltage Via the Application of Earth Ground

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "ELF",
    "source": "mains electricity / capacitive coupling to external environment",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "human body (unspecified participants)",
  "sample_size": null,
  "outcomes": [
    "Induced human body voltage (60 Hz mains)",
    "Voltage drop across in-line resistance (conductive patch)"
  ],
  "main_findings": "Voltage induced on a human body via capacitive coupling was measured, then the body was earth grounded using a conductive patch and a conductive bed pad. Each grounding method reduced coupled 60 Hz mains voltage by a factor of at least 70. A measured voltage drop across an in-line resistance in the conductive patch was reported as evidence supporting a simplified electrical network model of the human body.",
  "effect_direction": "benefit",
  "limitations": [
    "Sample size and participant characteristics not stated in abstract",
    "Study design details (controls, blinding, measurement conditions) not described in abstract",
    "Only 60 Hz mains voltage reduction reported; broader exposure conditions not addressed"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.66,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "earthing",
    "grounding",
    "conductive patch",
    "conductive bed pad",
    "induced body voltage",
    "capacitive coupling",
    "60 Hz",
    "mains voltage",
    "ELF"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.2,
      "reason": "Study concerns 60 Hz mains-related induced body voltage, which can be relevant to occupational/indoor electrical environments, though no workplace setting is specified."
    }
  ]
}