Does Proprioceptive Neuromuscular Facilitation-Based Hamstring Stretching Influence Deep Cervical Flexor Muscle...

Area of Science:

• Physiotherapy and Sports Medicine
• Neuromuscular Rehabilitation
• Biomechanics

Background:

• Hamstring flexibility is often linked to postural control and spinal health.
• Deep cervical flexor (DCF) muscle endurance is crucial for maintaining head and neck stability.
• The relationship between hamstring flexibility and DCF endurance requires further investigation.

Purpose of the Study:

• To evaluate the acute effects of proprioceptive neuromuscular facilitation (PNF) stretching on hamstring flexibility.
• To assess the immediate impact of PNF stretching on deep cervical flexor (DCF) muscle endurance.
• To explore potential correlations between hamstring flexibility changes and DCF endurance adaptations.

Main Methods:

• A randomized controlled trial involving 64 healthy female university students (aged 18-25).
• Participants were assigned to either a PNF stretching group or a control group.
• Measurements included hamstring flexibility (Passive Knee Extension Test) and DCF endurance (Cranio-Cervical Flexion Test).

Main Results:

• The PNF group demonstrated significantly greater improvements in hamstring flexibility compared to the control group.
• Both groups showed significant improvements in hamstring flexibility and DCF endurance from baseline.
• No significant immediate difference in DCF endurance was observed between the PNF and control groups post-intervention.

Conclusions:

• A single session of PNF stretching effectively enhances hamstring flexibility.
• PNF stretching does not appear to acutely improve deep cervical flexor endurance.
• Longer-term studies are warranted to determine if sustained hamstring flexibility improvements can influence cervical function.