author={D. Scott Davis and Paul E Ashby and Kristi L. Mccale and Jerry A McQuain and Jaime M Wine},
  journal={Journal of Strength and Conditioning Research},
This study compares the effects of 3 common stretching techniques on the length of the hamstring muscle group during a 4-week training program. Subjects were 19 young adults between the ages of 21 and 35. The criterion for subject inclusion was tight hamstrings as defined by a knee extension angle greater than 208 while supine with the hip flexed 908. The participants were randomly assigned to 1 of 4 groups. Group 1 (n = 5) was self-stretching, group 2 (n = 5) was static stretching, group 3 (n… 

Figures and Tables from this paper

Influence of the stretching frequency using proprioceptive neuromuscular facilitation in the flexibility of the hamstring muscles

The results showed that there was no difference in relation to delayed gains when one, three or six stretching maneuvers were used with the hold-relax technique on hamstring muscles.

Effect of stretching techniques on hamstring flexibility in female adolescents

After three weeks as well as after six weeks of stretching the straight-leg-raise (static stretching) group had the greatest improvement in hamstring length, although the difference was not statistically significant.

The Effectiveness of Static and Dynamic Stretching on Hamstring Flexibility after 4-Weeks Training to Prevent the Risk of Injuries

The results indicated that static stretching exercise is more effective in increasing the hamstring flexibility compared to dynamic stretching exercise and also have results on it in reducing the risk of injury.

Comparison of Ballistic and Static Stretching on Hamstring Muscle Length Using an Equal Stretching Dose

Post hoc analysis revealed that both static and ballistic stretching group produced greater increases in hamstring length than the control group, and the static stretching group demonstrated a statistically greater increase in hamstring musclelength than the ballistic stretch group.

Effect of Static Stretch and Massage on Hamstring Flexibility of Badminton Players

There was no significant difference between massage treatment and static stretch treatment on hamstring flexibility (active knee ran ge of motion) of male badminton players.

Improvement of Hamstring Flexibility: A Comparison between Two PNF Stretching Techniques

Objective: To determine the effectiveness of two PNF stretching techniques for improving hamstring flexibility and to compare the effectiveness of two PNF stretching techniques (Hold Relax and

A Comparative Study on Efficacy of Ballistic Stretching Versus Modified Hold Relax Technique in Increasing Hamstring Flexibility

The findings suggest that modified holdrelax and ballistic stretching both was statistically significant in improving hamstring flexibility, but modified hold Relax technique showed better results compared to ballistic stretching.

Hamstring flexibility in young women following passive stretch and muscle energy technique.

Ten sessions of hamstring stretches in normal young women using either static stretch or MET had similar effect on restoring flexibility to hamstrings.

Neurodynamic sliding versus PNF stretching on hamstring flexibility in collegiate students: A comparative study

The study supports the experimental hypothesis that PNF (Hold-Relax) stretching technique is more effective than Neurodynamic sliding technique for improving hamstring flexibility.

Hamstring Stretches-Frequency Required to Maintain Knee Extension Range of Motion

It is indicated that an on-going hamstring stretching programme with a frequency of three times a week is required to maintain the initial improvement in ROM.



Flexibility and passive resistance of the hamstrings of young adults using two different static stretching protocols

Both protocols are effective in terms of improving flexibility of hamstrings, however, if injury is reduced when there is relatively lower passive resistance at the end‐of‐range, then the eight‐week training regimen would be recommended.

Flexibility training: ballistic, static or proprioceptive neuromuscular facilitation?

The findings indicate that PNF may be the preferred technique for improving flexibility, and that flexibility training results in an increased consistency of flexibility scores, and the importance of establishing baseline data prior to any training study.

The effect of time on static stretch on the flexibility of the hamstring muscles.

The results of this study suggest that a duration of 30 seconds is an effective time of stretching for enhancing the flexibility of the hamstring muscles.

The effect of time and frequency of static stretching on flexibility of the hamstring muscles.

The results of this study suggest that a 30-second duration is an effective amount of time to sustain a hamstring muscle stretch in order to increase ROM.

The effect of static stretch and dynamic range of motion training on the flexibility of the hamstring muscles.

The results of this study suggest that, although both static stretch and DROM will increase hamstring flexibility, a 30-second static stretch was more effective than the newer technique, DROM, for enhancing flexibility.

Effect of Lower-Extremity Position and Stretching on Hamstring Muscle Flexibility

It was concluded that the SPS was more effective at increasing hamstring flexibility in subjects with limited hamstring flexibility than the FSPS.

Effect of pelvic position and stretching method on hamstring muscle flexibility.

It is suggested that APT position was more important than stretching method for increasing hamstring muscle flexibility, and PNF stretching technique was not a significant difference.

Sport stretching: effect on passive muscle stiffness of short hamstrings.

Effect of cessation and resumption of static hamstring muscle stretching on joint range of motion.

There was no retention of knee ROM 4 weeks following a 6-week stretching protocol and a subsequent stretching period did not enhance the gain of kneeROM over the initial stretching period.

Increasing Hamstring Flexibility Decreases Lower Extremity Overuse Injuries in Military Basic Trainees

The number of lower extremity overuse injuries was significantly lower in infantry basic trainees with increased hamstring flexibility, and the number of injuries was also significantly higher in the intervention group.