Related Experiment Video
Updated: Jul 13, 2026
09:38
Determining Pain Detection and Tolerance Thresholds Using an Integrated, Multi-Modal Pain Task Battery
Published on: April 14, 2016
Pain perception after running a 100-mile ultramarathon
Martin D Hoffman1, Jean Lee, Holly Zhao
1Department of Physical Medicine & Rehabilitation, Northern California Health Care System, and University of California-Davis Medical Center, Sacramento, CA, USA. martin.hoffman@va.gov
Archives of Physical Medicine and Rehabilitation
|August 7, 2007
Summary
Faster runners in extreme endurance events experience a temporary reduction in pain perception. Slower runners and controls did not show this pain reduction, possibly due to exercise-induced analgesia system exhaustion.
Area of Science:
- Exercise physiology
- Pain perception research
- Sports science
Background:
- Extreme endurance events, such as 100-mile running races, push physiological limits.
- Understanding how intense exercise affects pain perception is crucial for athletes and sports scientists.
Purpose of the Study:
- To investigate the impact of an extreme exercise bout on pain perception in endurance athletes.
- To determine if ongoing exercise-related pain influences pain perception post-event.
Main Methods:
- A repeated-measures design was employed.
- Participants included 21 runners from a 100-mile endurance race and 11 non-running controls.
- Pain perception was assessed using overall pain ratings and a pressure pain test before and after the race.
Main Results:
- Mean overall pain significantly increased post-race for runners (3 to 39mm on a 100mm scale).
- Faster runners demonstrated a significant reduction in pressure pain sensitivity after the race (15mm decrease).
- Slower runners and control subjects showed no significant change in pain perception.
Conclusions:
- Faster runners in extreme endurance races exhibit a transient decrease in pressure pain sensitivity.
- This reduction in pain perception is not amplified by exercise-induced pain.
- Slower runners may not experience this analgesic effect due to potential exhaustion of exercise-induced analgesia systems or insufficient exercise intensity.
Related Concept Videos
01:20Pain
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
01:44Nociception
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...
01:25Analgesia and Pain Management
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
01:29Blood and Nerve Supply to the Bones
Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...