Getting out on the track and doing intervals and the like, though providing central/peripheral physiological adaptation, seems to be becoming less relevant and utilised in sport. This makes sense, unless you are a runner, as motion in most sport is typified by discontinuous multiplanar motion, performed at a variety of velocities and accelerations. Furthermore, from a practical standpoint, non-specialized tasks make inefficient use of training time and effort, especially for those who are time poor e.g. teams playing 2-3 times per week - congested schedules.

The key principle of tactical metabolic training is to overload the three major factors of physical performance (strength, endurance, speed) within your sport specific technical/tactical sessions, rather than performing disconnected work sequences on the track or elsewhere. Wearable resistance is one smart training option that can provide this sport specific multiplanar mechanical and metabolic overload. The upside also, is that your players are usually more motivated to perform specialised, task-oriented exercises that have direct transfer to their sport and competition.