Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Time Course of Recovery Following Crossfit® Karen Benchmark Workout in Trained Men

Version 1 : Received: 3 September 2021 / Approved: 6 September 2021 / Online: 6 September 2021 (07:19:09 CEST)

How to cite: Tibana, R.A.; Sousa Neto, I.V.D.; Sousa, N.M.F.D.; Zecchin-Oliveira, A.M.; Neto, F.R.; Falk Neto, J.H. Time Course of Recovery Following Crossfit® Karen Benchmark Workout in Trained Men. Preprints 2021, 2021090078 (doi: 10.20944/preprints202109.0078.v1). Tibana, R.A.; Sousa Neto, I.V.D.; Sousa, N.M.F.D.; Zecchin-Oliveira, A.M.; Neto, F.R.; Falk Neto, J.H. Time Course of Recovery Following Crossfit® Karen Benchmark Workout in Trained Men. Preprints 2021, 2021090078 (doi: 10.20944/preprints202109.0078.v1).

Abstract

The study describes the acute and delayed time course of recovery following the CrossFit® Benchmark Workout Karen. Eight trained men (28.4±6.4 years; 1RM back squat 139.1±26.0 kg) undertook the Karen protocol. The protocol consists of 150 Wall Balls, aiming to hit a target 3 meters high. Countermovement jump height (CMJ), creatine kinase (CK), and perceived recovery status scale (PRS) (general, lower and upper limbs) were assessed pre, post-0h, 24h, 48h and 72h after the session. The CK concentration 24h after was higher than pre-exercise (338.4 U/L vs. 143.3 U/L; effect size: 0.74; p≤0.05). At 48h and 72h following exercise, CK concentration had returned to baseline levels. The PRS general and of the lower limbs were lower in the 24-hours post-exercise compared to pre-exercise (PRS general: 4.7 ±1.5 and 7.9 ±1.7 mmol/L; and PRS of the lower limbs: 4.0 ±2.5 and 7.9 ±0.8, respectively). The PRS general, lower, and upper limbs were reduced at 48-post exercise compared to 72-hours post-exercise scores. Our findings provide insights into the fatigue profile and recovery in acute CrossFit® and can be useful to coaches effectively design the daily session.

Keywords

Functional Fitness; High intensity Functional training; Periodization; Overreaching; Muscle recovery.

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