1 Isotonic -a muscle fiber contraction in which force production is unchanged when the muscle contracts causing movement of an external load.  Isokinetic -a muscle fiber contraction in which force production of the contraction is sufficient to overcome the external load.
HIV/AIDS. HIV Risk Behaviors. The risk of getting HIV varies widely depending on the type of exposure or behavior (such as sharing needles or having sex without a condom). Some exposures to HIV carry a much higher risk of transmission than other exposures.
...Yes, it is possible. There is a risk of HIV infection from unprotected sex, and the risk goes up in the presence of other sexually transmitted diseases (STDs). An STD can inflammation or open sores in the lining of the genitals, which increases... Read more Â».