You are floating motionless in outer space. Your mass is 70 kg. Your 70 kg transporter floats by and you attempt to bring in closer by flexing your right arm. Are you more likely to produce an isotonic or isometric contraction? Explain.

Since this is not my area of expertise, I searched Google under the key words "isotonic isometric contraction" to get these possible sources:

http://en.wikipedia.org/wiki/Muscle_contraction
http://www.weightlossforall.com/exercise-types.htm
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Muscles.html#isotonic

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

I hope this helps.

To determine whether you are more likely to produce an isotonic or isometric contraction in this scenario, let's first understand the difference between these two types of muscle contractions.

An isotonic contraction occurs when the tension in a muscle remains constant while the muscle changes its length. This type of contraction is commonly associated with movements of the body, such as lifting objects or jumping.

On the other hand, an isometric contraction is when the tension in a muscle increases, but there is no change in muscle length. This happens when you attempt to move an object that is too heavy or immovable, like pushing against a wall.

In the given scenario, you are floating motionless in outer space with no external forces acting upon you. Since there are no external forces, there is no resistance to your flexing motion. This means that when you attempt to bring your transporter closer by flexing your right arm, you are more likely to produce an isotonic contraction.

An isotonic contraction would allow your arm muscles to generate enough force to move your transporter closer to you, changing the length of your arm muscles while maintaining tension. The absence of any external forces opposing your movement allows for this type of contraction.

Therefore, in this situation, an isotonic contraction is more likely to occur as you flex your right arm to bring the transporter closer.