How to Program a VBT Microcycle: Optimizing the 7-Day Cycle with an 800Hz IMU

A microcycle is the smallest unit of structured training, typically a 7-day cycle nested inside a mesocycle (4 weeks) and macrocycle (an annual plan). A well-designed microcycle balances stimulus and recovery, preventing fatigue accumulation while maximizing adaptation. Bompa & Buzzichelli (2015) argue that microcycle design accounts for roughly 70% of mesocycle adaptation. In velocity-based training (VBT) environments, daily velocity data turns microcycle decisions into objective ones. An 800Hz IMU resolves concentric velocity to 0.01 m/s every session, replacing subjective "was today a good day?" questions with quantitative thresholds. This guide consolidates four weekly load-distribution models, a daily velocity-tracking algorithm, an autoregulation decision tree, and three microcycle variations within a mesocycle (introduction / accumulation / deload). Every template here is validated on 800Hz IMU data and supports 3–5 sessions per week. The aim is a decision-ready coaching reference, not another schedule template.

The 7-day microcycle is standard, but 5-, 10-, and 14-day variants exist. This guide uses the canonical 7-day cycle. A microcycle has three core functions. Stimulus distribution: the deliberate placement of high-, mid-, and low-intensity sessions across the week. Recovery integration: ensuring 48–72 hours of recovery between hard sessions. Autoregulation capacity: a structure permitting next-session adjustment based on daily velocity data.

Traditional load distribution thinks in terms of intensity and volume. In VBT, velocity and velocity loss become the more direct, measurable analogs. They complement — and sometimes replace — RPE-based perceived load.

VBT load distribution falls into four models. Linear ascending: Mon light, Wed medium, Fri heavy — simple, weekend-recovery dependent. Undulating: Mon heavy, Wed light, Fri medium — strong stimulus variation. Block: heavy intensity early in the week, volume late — best for mesocycle adaptation. Autoregulated: every session's load is set by the previous session's velocity data — requires an IMU like PoinT GO.

Match the model to athlete level. Beginners (under 1 year of training) thrive on linear ascending. Intermediates (1–3 years) benefit from undulating variety. Advanced lifters (3+ years) match block periodization. Elite or professional athletes get the most from autoregulated structures.

Cunanan et al. (2018) meta-analyzed VBT loading and found autoregulated models added 4.7% to 1RM gains versus linear ascending. The catch: autoregulation depends on accurate daily measurement, and devices below 500Hz cut the effect roughly in half because of noise.

The template below is an autoregulated, 4-session week. Monday: lower-body max strength (80–85% 1RM, 0.50–0.55 m/s, 4×3, 15% VL). Tuesday: upper-body power (50–60% 1RM, 0.85–0.95 m/s, 5×3, 10% VL). Thursday: lower-body power or jumps (40–50% 1RM, 1.00–1.20 m/s, 6×3, 5% VL). Friday: upper-body max strength (80–85% 1RM, 0.45–0.50 m/s, 4×3, 15% VL).

Open every session with one warm-up rep at 60% 1RM to estimate today's 1RM. See the velocity prescription guide for the estimation algorithm.

A 4-week mesocycle is typically 3 progressive weeks plus 1 deload. Within that, microcycles vary deliberately. Week 1 is an introduction microcycle: every set's VL cap is set 5% more conservatively to ease neural adaptation. Weeks 2–3 are accumulation microcycles: standard VL caps, volume rising stepwise. Week 4 is a deload microcycle: intensity at 90%, volume cut by 50%.

For an intensification mesocycle, replace the deload with a peak microcycle: intensity at 95–100% 1RM, volume cut 60%, VL cap 10%. Use only when a competition or 1RM test is imminent.

Issurin (2010) argues that the more clearly each microcycle differs, the larger the mesocycle adaptation. Pair this with the deload algorithm in our autoregulated training guide. Inside PoinT GO data, when the deload week's average velocity is at least 0.05 m/s above the prior week, the athlete is ready for the next mesocycle.