[Retracted] Content System of Physical Fitness Training for Track and Field Athletes and Evaluation Criteria of Some Indicators Based on Artificial Neural Network

<div>BP neural network algorithm flow.</div>

Discrete Dynamics in Nature and Society

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Figure 6

Figure 6: [Retracted] Content System of Physical Fitness Training for Track and Field Athletes and Evaluation Criteria of Some Indicators Based on Artificial Neural Network 

Figure 6 | [Retracted] Content System of Physical Fitness Training for Track and Field Athletes and Evaluation Criteria of Some Indicators Based on Artificial Neural Network 