From the Research
Sudden bilateral hamstring contraction is most commonly caused by forceful eccentric contraction mechanisms, often resulting in hamstring injuries, which can occur due to various factors such as muscle fatigue, dehydration, or electrolyte imbalances. According to the most recent and highest quality study 1, hamstring injuries can occur in the proximal tendon, muscle belly substance, or distal tendon insertion, and are commonly seen in athletes who participate in sports involving rapid acceleration and maximum speed running. The study highlights that previous hamstring injury is a significant risk factor for future injuries, and that rehabilitation strategies should focus on addressing modifiable risk factors such as strength imbalances, flexibility, and fatigue.
Some key factors that contribute to hamstring injuries include:
- Eccentric contraction mechanisms, which can cause muscle strain and damage
- Muscle fatigue, which can increase the risk of injury
- Dehydration and electrolyte imbalances, which can affect muscle function and increase the risk of cramping
- Anatomical factors, such as the biarticular organization of the hamstrings and the dual innervations of the biceps femoris
For immediate relief, gentle stretching and massage of the affected muscles, as well as staying hydrated and considering electrolyte-rich foods or supplements, may help alleviate symptoms. However, if the contraction is severe, persistent, or accompanied by other symptoms such as weakness or numbness, it is essential to consult a healthcare provider promptly to rule out more serious conditions such as nerve disorders or central nervous system issues. The study 1 emphasizes the importance of accurate diagnosis and treatment, and highlights the need for further research into the prevention and management of hamstring injuries.