How to Increase Flexibility - Hamstrings Stretch [Muscle Training & Growth]
2,392 views · Published 3 April 2018 · 5:01 · Indexed 23 September 2026
Channel: Ron Williams Champion · 2018 · Howto & Style
Will Flexibility Make You Stronger? https://www.championlife.co/ Hey Guys, In this video I want to answer a question that was asked in a previous video. The question was how to get more flexible hamstrings. However, the principles I teach in this video are important for all muscle growth. If you are not flexible enough you can't get a full range of motion in your exercises. If you can't get a full range of motion you can't grow as fast OR WORSE you are more susceptible to INJURY! So pay attention! Thanks and God Bless, Ron Willams - Natural Bodybuilder of the Decade https://ironchestmaster.com/ --------------------------------------------------------------------------------------------------- Stretching and Strength and Muscle Growth Many weightlifting routines begin with a series of stretches in the hopes of increased strength and muscle growth. Is this just another myth? Well, consider first a study conducted by the University of Milan. Researchers had 17 young males do a series of jumps from various squat positions, with or without stretching beforehand. Jump height, power, and maximum velocity were all lower in the group that stretched for 10 minutes before the jumps. Other research indicates that only static stretches of longer duration (over 60 seconds) negatively impact maximal muscle performance, whereas shorter static stretches (under 30 seconds) don’t improve performance, but don’t impair it either. There are various theories for why stretching can reduce strength and power. Some researchers believe that loose muscles and tendons can’t contract as forcefully as shorter ones, whereas others point to evidence that stretching interferes with signals from the brain that tell muscles to contract. And what about stretching and muscle growth? Well, you’re probably not surprised to learn that research has proven false the claim that stretching helps more deeply activate muscles and stimulate additional growth. Stretching and Speed Louisiana State University conducted a study in 2008 to determine how stretching affects the speed of sprinters. They took 19 of their top sprinters and had them perform three 40-meter sprints in two sessions, separated by a week each. Before each session the runners performed a warm-up routine, and added four static stretches of the calf and thigh before one of the sprint sessions. The result? The stretching slowed them down by one-tenth of a second, with most of the loss occurring in the second half of the sprint. Miami University conducted a similar study with 18 collegiate sprinters, and their research revealed that static stretching resulted in “a significant slowing in performance … in the second 20 (20-40) m of the [100 m] sprint trials.”
