Technology & Digital Tools Flashcards

In velocity-based training, an individual load-velocity profile is constructed by:

Answer: Plotting mean bar velocity against increasing percentages of 1RM across multiple loads

The load-velocity profile establishes a linear relationship between % 1RM and bar velocity, enabling coaches to estimate and adjust daily training loads from velocity alone.

The acute:chronic workload ratio (ACWR) is primarily applied by strength and conditioning coaches to:

Answer: Identify athletes at elevated injury risk due to rapid spikes in workload

ACWR compares the previous week's load (acute) to the rolling 4-week average (chronic); ratios above ~1.5 are associated with increased injury risk due to insufficient adaptation time.

A primary limitation of heart rate monitors when used to quantify load during resistance training is:

Answer: Heart rate response is confounded by non-aerobic factors such as Valsalva maneuver and large muscle mass involvement

During heavy resistance training, cardiac output is also driven by intrathoracic pressure changes, isometric tension, and pressor response — not solely aerobic energy demand — inflating load estimates.

An inertial measurement unit (IMU) combines data from which combination of sensors?

Answer: Accelerometer, gyroscope, and magnetometer

IMUs fuse tri-axial accelerometer (linear acceleration), gyroscope (angular velocity), and magnetometer (orientation relative to Earth's magnetic field) data to estimate full 3D motion.

The limb symmetry index (LSI) calculated from unilateral force plate testing is expressed as:

Answer: (Weaker limb / stronger limb) × 100

LSI = (weaker/involved limb ÷ stronger/uninvolved limb) × 100; a score of ≥90% is commonly used as a return-to-sport criterion following lower-limb injury.

A GPS report shows a team sport athlete accumulated 850 m of distance in 'Speed Zone 5' (>25 km/h) during a match. This metric is most useful for:

Answer: Informing high-speed running load management and guiding next-session intensity

Distance in high-speed zones reflects the most demanding locomotive outputs; coaches use this to compare match vs. training exposure and adjust the next session's sprint volume accordingly.

When using Dartfish or Kinovea to analyze squat technique, which software feature provides the most direct biomechanical insight?

Answer: Drawing joint angle measurements and comparing frame-by-frame movement sequences side by side

These video analysis tools allow coaches to pause footage, measure joint angles, and compare an athlete's technique across trials or against a reference model frame by frame.