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Function First Spine and Sport was established in 2021 by Dr. Cynthia VanSickler. She was joined in practice in April of 2023 by Dr. Kaitlyn Heyrman. They are both licensed chiropractors in the state of Iowa, serving the people of Humboldt County and Webster County, as well as surrounding areas. The mission of Function First is to educate and empower patients to help heal their musculoskeletal conditions. Our approach is different than your standard chiropractic office. We address pain and dysfunction by first properly assessing it via the McKenzie Method of Decompressive Therapy. We look at the full picture of the condition, all the way from how it started to what it presents like on the day of your visit. 

Dr. Cindy is a Certified Chiropractic Sports Physician who has been specializing in sports injury and rehabilitation since 2014. The Function First assessment is what sets the clinic apart to help with the treatment of sports related/soft tissue injuries. We use Functional Movement Screens to look at the biomechanics of common athletic movements. Based on findings from the screens, we then can determine what led to the weaknesses or compensations that caused the athlete to have an injury. 

When it comes to the treatment of non-sports related injuries, we approach it in the same problems solving manner. We look to see how the patient moves and then develop a specific treatment plan for the patient based on their particular presentation. We believe in the body's ability to heal itself, we just help by giving the person the proper tools. 

Why Function First?
Specialized Chiropractic Care in Webster and Humboldt County, Iowa

  • Comprehensive Biomechanical Assessments on initial visit lead to more efficient and effective healing

  • Treatment plans that include evidence-based exercises that are specific to your condition.

  • Advanced soft tissue techniques to improve outcomes of soft tissue injuries such as tendonitis, carpal tunnel syndrome, and bursitis.

  • Athletic injury treatment and prevention provided by the area's only Certificed Chiropractic Sports Physician

  • 2 locations to more conveniently serve the people of Humbolt County, IA and Webster County, IA

  • What services do chiropractors provide?
    Chiropractors offer various services to help address musculoskeletal pain and injuries, including spinal adjustments, soft tissue therapies, rehabilitation exercises, and lifestyle advice.
  • What is the Graston Therapy?
    The graston therapy is an advanced soft tissue technique that utilizes special stainless steel instruments to help locate and eliminate myofascial restrictions that lead to abnormal muscle activity.
  • What are the benefits of Kinesio Taping?
    At Function First, we utilize RockTape. It is designed to help reduce inflammation in treatment areas that may be leading to abnormal muscle activation and movement patterns. By using specialized taping procedures, we can help restore normal muscle activity, which helps lead to healing of treatment areas.
  • What exercise therapy services do we provide?
    We provide Dynamic Neuromuscular Stabilization (DNS), dry needling, Function Movement Screens (FMS), McKenzie Mechanical Diagnosis and Therapy (MDT), and Perinatal Postpartum Rehabilitation. We combine our knowledge of many different techniques to develop a specialized program for for each patient.
Chiropractic Doctor Humboldt County Iowa

Chiropractic Sports Physician in Humboldt and webster County Iowa

techniques & methods

Below are the techniques and methods that Dr. Cindy and Dr. Kaitlyn uses on their patients. Click the button to learn more about each one.

Picture of the Function First Spine and Sport office outside



Dr. Cindy is hands down the most caring, passionate person in her field. Regardless of what you have going on, rest assured she will take the time to really listen and help you get on the right track. Whether it be neck pain, back pain, migraines, etc. she will give you the tools to help yourself feel better. Not only is she an amazing doctor, she is also a really great friend. 10000/10 recommend.


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Humboldt hours

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Monday: 9AM - 5:30PM
Tuesday: 9AM - 6PM
Wednesday: 9AM-1PM
Thursday: 7:30AM - 5:30PM
Friday: 7:30AM - 5PM
Saturday: 8AM - 12PM

Humboldt Address:

604 Sumner Ave, Humboldt, IA

Fort dodge hours

Monday: 1:30PM - 5:30PM
Tuesday: Closed
Wednesday: 9AM-1PM
Thursday: 7:30AM-11:30PM
Friday: 7:30AM - 5PM
Saturday: By appointment

Fort Dodge Address:

113 Ave O W, Fort Dodge, IA


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