Table 1 PICOS framework with inclusion and exclusion criteria.

From: Effects of plyometrics training on lower limb strength, power, agility, and body composition in athletically trained adults: systematic review and meta-analysis

PICOS

Inclusion

Exclusion

Population

Healthy, athletically trained adults aged 18–40, training ≥ 3 times/week for ≥ 1 year

Non-adults; sedentary individuals; clinical populations

Intervention

Plyometric training (including plyometrics training groups paired with other exercises)

Intervention duration < 2 weeks; informal or undefined plyometric protocols

Comparison

Active or inactive control groups not participating in the plyometric training program

Controls receiving plyometric training

Outcomes

Performance and physical fitness tests (see data extraction section)

No physical performance or fitness outcomes; missing or incomplete data

Study Design

Randomised controlled trials (RCTs), English language

Non-RCTs (e.g., quasi-experimental, protocols); non-English articles