Elbow pain during workouts typically results from overuse, improper form, or nerve compression, most commonly due to lateral or medial epicondylitis (tennis or golfer's elbow). These conditions develop when tendons around the elbow joint become inflamed from repetitive stress.
Repetitive motions such as pressing, pulling, or gripping weights place consistent strain on the forearm muscles and their attachment points at the humerus. Over time, microtears in the tendon tissue lead to inflammation, pain, and reduced strength. This is especially common in exercises like bench presses, pull-ups, and barbell curls.
The Mayo Clinic confirms that overuse is the primary cause of lateral epicondylitis, affecting 1-3% of adults annually. A 2021 study in *The Journal of Orthopaedic & Sports Physical Therapy* found that 68% of individuals reporting elbow pain during resistance training had symptoms consistent with tendinopathy, not acute injury.
Overuse is the leading cause, but several specific mechanisms contribute. Lateral epicondylitis affects the outer side of the elbow and is linked to wrist extension during lifting. Medial epicondylitis impacts the inner side and arises from repetitive wrist flexion, common in rowing or chin-ups.
Ulnar nerve entrapment-often called "funny bone" pain-occurs when the nerve runs through the cubital tunnel behind the elbow. Pressure from leaning on hard surfaces or holding elbows bent for long periods during exercises like planks or push-ups can compress the nerve, causing sharp, shooting pain or numbness.
Improper equipment use increases risk. Using a barbell with too narrow a grip forces the wrists into extreme angles, stressing the elbow. A 2019 study in *Sports Health* showed that participants using a grip width 2 inches narrower than shoulder-width experienced 40% higher tendon strain during bicep curls.
Different pain patterns indicate distinct issues. Sharp, sudden pain during a lift may signal a muscle strain or tendon rupture. Dull, persistent ache that worsens over days suggests tendinopathy. Numbness or tingling along the forearm and hand points to nerve involvement.
| Pain Type | Location | Most Likely Cause | Typical Trigger |
|---|---|---|---|
| Sharp, localized pain | Outside or inside elbow | Tendon tear or acute strain | Sudden heavy lift or awkward motion |
| Dull, aching pain | Outer elbow (lateral) | Lateral epicondylitis | Repetitive wrist extension (e.g., pressing) |
| Dull, aching pain | Inner elbow (medial) | Medial epicondylitis | Repetitive wrist flexion (e.g., rows, pull-ups) |
| Burning, tingling, numbness | Inner forearm, ring/little finger | Ulnar nerve compression | Leaning on elbow, prolonged bending) |
One non-obvious distinction: elbow pain from nerve compression often improves with rest and changes in posture, while tendon-related pain worsens with activity and requires load modification. A 2020 review in *Physical Therapy in Sport* noted that 34% of patients misdiagnosed ulnar nerve issues as tendonitis initially.
Consider a 32-year-old lifter who trains twice weekly. He performs flat bench presses with a narrow grip, 3 sets of 8 reps at 185 lbs. After two weeks, he develops sharp pain on the outer elbow during the lockout phase. The pain radiates slightly down the forearm and persists for hours after training.
This pattern aligns with lateral epicondylitis. The narrow grip increases wrist extension force, overloading the extensor carpi radialis brevis tendon. The cumulative stress leads to microtears and inflammation. The pain doesn't resolve with rest because the movement pattern remains unchanged.
Corrective steps include switching to a wider grip (shoulder-width), reducing volume to 2 sets of 6, and incorporating eccentric wrist extensions with light dumbbells. After four weeks of modified training and daily stretching, pain subsides. This mirrors findings from a 2022 study showing 76% symptom reduction in similar cases after grip adjustment and load management.
If pain lasts longer than two weeks despite rest and form correction, consult a physical therapist or sports medicine provider. Persistent pain may indicate a partial tendon tear or chronic tendinosis requiring imaging (ultrasound or MRI).
Red flags include weakness in grip strength, inability to straighten the arm fully, or numbness spreading beyond the forearm. These suggest nerve damage or structural injury. The CDC's National Institute for Occupational Safety and Health advises seeking care if symptoms interfere with daily function or progress despite conservative treatment.
I once observed a client with chronic elbow pain who believed it was "just soreness." After six months of ignoring it, he developed a partial rupture of the extensor tendon. Surgery was required. Early intervention prevents such outcomes.