Low recruitment rate

The main objectives of this single-arm pilot trial are to investigate the feasibility of our protocol in terms of 1) recruitment, 2) adherence, 3) tolerability, 4) acceptability and 5) retention. We aim to recruit 20 participants with advanced colon cancer (stage 3-4) who will have assessments of their autonomic nervous system function, carcinoembryonic antigen (CEA) levels, and patient-reported outcomes. Thereafter, patients will be directed to a nearby field clinic to receive twice-weekly cervical assessments & high-velocity, low-amplitude (HVLA) cervical adjustments for a period of 6 weeks. Re-assessments will be performed following 2 weeks and 6 weeks of chiropractic care.

After providing informed consent, individuals will undergo 6 weeks of chiropractic care. Throughout these 6 weeks there will be three assessments (Day 1, Week 2, and Week 6) that each include the following:

1. Isometric hand grip
2. Postural challenge
3. Patient-reported outcome surveys
4. Off-site blood draw for CEA level testing (only Day 0 and Week 6)

Each assessment will consist of the following recordings:

1. Electrodermal activity [EDA]
2. Impedance cardiography [ICG]
3. Electrocardiogram [ECG]

Inclusion Criteria:

• Males & females 18 years of age or older
• Able to provide informed consent
• Diagnosed with stage 3 or stage 4 colon cancer and currently receiving standard of care with a medical doctor.

Exclusion Criteria:

• Individuals with a known disorder resulting in syncope/fainting during postural changes (e.g., POTS, orthostatic hypotension)
• Cancer has metastasized to the cervical spine
• Individuals who have had a serious injury or surgery to the head, torso, lower body within the past 6 months.
• Individuals with evidence or medical history of clinically significant psychiatric disorder like anti-social disorder, schizophrenia, or borderline personality disorder that is uncontrolled or untreated.
• Individuals who currently have pending health related legal litigation.
• Individuals with a known heart condition (e.g., arrhythmia) that could result in an aberrant electrocardiogram.
• Individuals with a pacemaker
• Individuals who are on short benzodiazepines which include midazolam & triazolam
• Individuals with conditions that could result in neck instability such as rheumatoid arthritis.
• Individuals who do not present with a subluxation in the upper cervical region (C1/C2) at any point during the 6 weeks of chiropractic care.
• Individuals with a condition that may cause weak or brittle bones such as osteoporosis
• Since x-rays may be requested for care, participants who are pregnant will be excluded from the study.