Which of the following is not a result of muscular contraction?

Options

A. Production of heat
B. Motion
C. Production of antibodies
D. Maintenance of posture

Explanation

To determine which of the following is not a result of muscular contraction, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Muscular Contraction**:
- Muscular contraction involves the shortening and lengthening of muscle fibers, which leads to various physiological outcomes.

2. **Analyzing the First Option - Production of Heat**:
- During muscular contraction, energy is utilized, and a byproduct of this energy usage is heat. Therefore, the production of heat is indeed a result of muscular contraction.

3. **Analyzing the Second Option - Motion**:
- Muscular contraction directly leads to movement. When muscles contract, they pull on bones, resulting in motion. Thus, motion is also a result of muscular contraction.

4. **Analyzing the Third Option - Production of Antibody**:
- The production of antibodies is not related to muscular contraction. Antibodies are produced by B cells in the immune system, which is a completely different biological process. Therefore, this option does not result from muscular contraction.

5. **Conclusion**:
- Based on the analysis, the option that is not a result of muscular contraction is the **production of antibody**.

### Final Answer:
The correct answer is **the production of antibody**.