How the Technology Works
The PUSH Band uses an accelerometer and gyroscope to measure the movement patterns being performed in the gym. As an athlete moves from one movement to the next, NEXUS knows how many reps of Movement #1 to expect and then to look for a transition to Movement #2, and so on. The reps are not only being counted, but also quantified for the velocity, displacement, power, and time.
NEXUS also needs to know the difference between a deadlift and you reaching to grab your water bottle. It does this by using a Machine Learning Noise Detection algorithm that is getting smarter over time to know the difference between real reps and everything else.
With all of this data, NEXUS is able to calculate all the below metrics for any given workout.
Work is force multiplied by displacement. It's the distance a load is lifted multiplied by the force required by the muscles to do so.
Tracking work output is the first step to managing performance and health over time. Large increases in work over a short period of time, or constant high amounts of work without adequate recovery may put athletes at risk for breakdown or injury. For example, if the highest amount of work an athlete has completed during a session is 100 kJ (kilojoules), and the workout for today is 200 kilojoules, this may be beyond their current capabilities. The same principle can be used week over week or month over month.
The accumulation of work over longer periods (weeks and months) should be slow and consistent. Conversely, large drops in work over time can lead to de-training. Strategic low work periods (days/weeks) can aid in recovery and increase performance over time.
Power is work divided by time. This can be understood as "how fast" an athlete completed the work endured, or the intensity of a training session.
The higher the power output, the more intense or "hard" the exercise or workout will be. In competition, the athlete with the highest power over the course of a workout will win. By manipulating technique, cadence, rest periods (work to rest ratio), and round split times, athletes can maximize their power output.
In a workout with multiple rounds (repetitions of a series of movements), it is the time required to complete each round. This can provide information into how an athlete is pacing or fatiguing through a workout. As they complete workouts with differing movement sequencing, athletes can learn how their round splits should be managed depending on the specific combination and how their body reacts.
It is often ideal to hold consistent splits and possibly even improve your round splits later in a workout. However, many athletes do the opposite by going out too fast in the beginning, and then slowing down significantly in the second half of the race.
Cadence is the speed a movement is cycling or pacing. NEXUS provides this data for each exercise independently as heavy Barbell Cleans cannot be completed at the same Cadence as Double Unders. Depending on the exercise or workout, athletes may choose to increase or decrease the amount of repetitions completed per minute. A higher cadence will result in higher power output, but will also lead to faster fatigue. Find the optimal cadence to minimize the rest required to complete the exercise or workout in the shortest time possible.
Work to Rest
The work to rest ratio will give you information about how much recovery is being taken during a workout. Rest allows the athlete to replenish energy and remove metabolic waste by-products. More rest time will enable performing at higher intensities (power outputs) during the work periods, but will add to the clock time. Less rest time will create more fatigue, decreasing power outputs, but lowering the clock time.
Finding the optimal balance between work and rest by understanding the overall ratio for different workouts will help to guide intensities or pacing strategies to maximize power outputs. It can help to understand the right amount of breaks to take intraset as well as how much time transitions are taking up.
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