You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

The phase 1, or cardiodynamic phase (Whipp et al. 1982), is followed by a primary and rapid exponential process (phase 2), with the third phase characterised by a delayed rise in _VO2 (slow component) which causes _VO2 to increase toward an elevated steady state, or else it is truncated by the…
Background