Sue Would Like to Improve the Flexibility of Her Calf

Multiple Choice

Sue would like to improve the flexibility of her calf muscles.Which of the following static training thresholds would you recommend?

A) hold stretch for 6 seconds,perform a single repetition,7 days per week
B) hold stretch 10 seconds,perform 4 repetitions,once per week
C) hold stretch 15 seconds,perform a single repetition,once per week
D) hold stretch 15 seconds,perform 4 repetitions,3 days per week