Isotonic contractions maintain constant tension in the muscle as the muscle changes length. This can occur only when a muscle's maximal force of contraction exceeds the total load on the muscle. Isotonic muscle contractions can be either concentric (muscle shortens) or eccentric (muscle lengthens).
Her risk of scarring of her fallopian (uterine) tube(s) is increased with untreated Chlamydial infection. This untreated infection can lead to pelvic inflammatory disease (PID), which can scar the tubes, possibly causing infertility.
