He mentioned that there is no direct evidence to support the eccentric contraction idea, such as a video that reveals a real tearing of the hamstring muscle or tendon as he had actually shown with a calf muscle stress on video in 2002. However, maybe there is no clear cut answer to this issue.
The hamstrings flex the knee and extend the hip throughout the running gait. In a 2019 narrative evaluation by a group of Canadian and Australian scientists, they cited a number of "gaps" of understanding concerning this part of hamstring pressure research study: a lack of studies among elite professional athletes, an absence of direct measurement of hamstring muscle stimulation during high-speed running, the need to look at the how hamstring muscles and tendons each add to extending and velocity, and an absence of potential research studies that examine the relationship in between running mechanics and hamstring injury.
The researchers, nevertheless, warned that the included research studies' conclusions were based upon "evaluations of the hamstring injury system," not the injury "per se." A few of these studies had topics running on a treadmill at a slower rate than a real sprint on a grassy field where many of the hamstring strains occur.
This would likely further lower the research study predisposition. This Website of good versatility of the hamstring might look like an obvious reason for a hamstring strain, however like the majority of clinical research study there is no strong certainty that this holds true. One 2012 literature evaluation found blended outcomes regarding whether an absence of flexibility and a reduction of muscle length might trigger a pulled hamstring.
However, a potential study of 44 sprinters in Hong Kong found no "substantial difference in the knee flexion angle for the peak knee flexion torque" in between the hurt and non-injured during the pre-season. For basic hamstring and knee versatility, there is "inconsistency" amongst numerous studies. The scientists speculated that it is since of various methods and aspects utilized, such as various control groups, control of risk elements, and how injury dangers were measured.
discovered that the degree of versatility, movement, and variety of motion in the hips, knees, and ankles showed no clear relationship with the risk of getting a hamstring strain. Previous hamstring injury Just like many kinds of muscle and joint injuries, having a history of hamstring stress would increase your possibilities of sustaining another pulled hamstring.
0 
Star