Question

muscle growth after 12 weeks of training at different rep ranges

1. what does the x - axis represent?
2. what does the y - axis represent?

Explanation:

1. The x-axis labels list different rep ranges paired with their corresponding percentage of 1-repetition maximum (1RM), which are the training variables tested in the study.
2. The y-axis has percentage values, and the chart title specifies it measures muscle growth after 12 weeks of training, so this axis shows the percentage of muscle growth.

Answer:

1. Different training rep ranges (with corresponding % of 1RM)
2. Percentage of muscle growth after 12 weeks of training