What type of muscle spasm is described as a rigid contraction lasting a period of time?

A tonic spasm is characterized by a sustained contraction of the muscle, resulting in rigidity that lasts for a period of time. This type of spasm is often associated with prolonged muscle tension and can lead to discomfort and potential injury if the spasm persists. Tonic spasms can occur in various situations, such as after an injury, during certain neurological conditions, or due to excessive muscle fatigue.

In contrast, a clonic spasm involves alternating periods of contraction and relaxation, making it more dynamic rather than sustained. Reflex spasms are typically responses to stimuli and can vary in duration and intensity, while acute spasms generally refer to sudden onset muscle contractions that may not last for an extended period. Understanding these distinctions helps in accurately identifying and managing different types of muscle spasms in athletic training and rehabilitation settings.