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.
have sex with an hiv positive partner 500 times using condoms and your chances escalate to 1 in 11 skip the gift wrap and they re 2 in 3 a couple points these odds apply equally to men and womenave sex with an hiv positive partner 500 times using condoms and your chances escalate to 1 in 11 skip the gift wrap and they re 2 in 3 a couple points these odds apply equally to men and women