Sports Stretching Exercise 1

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Muscles stretched:
• Musculus quadriceps femoris
• Musculus rectus femoris
• Musculus quadriceps vastus medialis
• Musculus quadriceps vastus lateralis

Function:
• Leg extension
• Hip flexion

Weight shifting:
• shift the body toward the raised foot

Stretching duration:
• 20 seconds each side
• 1 or 2 repetitions each side

Annotation:
• do not stretch to pain threshold
• avoid hollow back
• do not perform in case of lumbar kyphosis