It is enough for us to observe a marathon runner and compare him with a rugby player to understand the importance of a correct management of body weight in cross-country running. The reasons behind this need are essentially two: the first of a performance nature and the second of a character. healthy.
2) The flight phase necessarily involves a return to the ground, with consequent impact of the support foot on the ground with an intensity proportional to the weight of the subject. Repeated several thousand times, this impact causes non-negligible overloads to the osteoarticular structures, with negative repercussions at the level of the spinal column and its discs, knees and ankles. This is the reason why the choice of running shoe cannot ignore the prior analysis of the user's physical constitution. It should also be considered that this second aspect - so to speak healthy - necessarily also limits the possibilities of training. not resting adequately and exceeding the mileage causes these "micro traumas" to overlap, gradually leading to acute or chronic pathologies (tendinitis, muscle strains, stress micro-fractures, etc.).
Based on these considerations, some authors have proposed ideal weight ranges for those who run at a professional or amateur level. Due to its simplicity of calculation, the BMI can be considered in this regard (body max index), Italianized in IMC (body mass index):
BMI = weight (kg) / [height (m)] 2
Height
Weight
JUDGMENT:
until the marathon
maximum of one "hour and races up to 10000 m
maximum cushioning and limit mileage
We are obviously talking about theoretical reference data for competitive athletes. Nothing prevents a slightly overweight subject from running a few kilometers in the park; however, if he intends to devote himself particularly hard to this sport, he must first of all improve his diet and bring the BMI back to acceptable values. Finally, it is worth highlighting two other aspects.The first is that the ideal weight is not synonymous with a healthy weight; the latter "is in fact defined as" that weight capable of giving the most pleasant sensation of physical well-being and fullness of life, and with which the "athlete has presumably obtained the best results". The second is that for BMI values considered optimal, complications may arise due to excessive thinness (greater vulnerability to infections and, in women, amenorrhea or athlete's triad); also for this reason, if you want to achieve these results, it is advisable to seek a preventive consultation with a sports doctor or other professionals in the sector.
