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Table 5 Effect size and p-values derived from meta-analyses

From: Plyometric-Jump Training Effects on Physical Fitness and Sport-Specific Performance According to Maturity: A Systematic Review with Meta-analysis

 

PJT pre-PHV

versus

control pre-PHV

PJT post-PHV

versus

control post-PHV

PJT pre-PHV

versus

PJT post-PHV

Sport-specific performance§ (3:0)¥

0.55 (0.004)*

0.82 (< 0.001)*

0.11 (0.565)

Male studies

Same as above

Same as above

Same as above

Female studies

NA

NA

NA

Maximal dynamic strength (2:2)

0.35 (0.022)

0.46 (0.003)

-0.09 (0.546)

Male studies

NA

NA

NA

Female studies

NA

NA

NA

COD speed time (1:3)

0.62 (0.075)

0.51 (0.149)

-0.42 (0.012)

Male studies

NA

NA

NA

Female studies

0.37 (0.29)

0.48 (0.366)

-0.40 (0.099)

Linear sprinting speed time (5:1)

0.38 (0.011)

0.50 (0.002)

0.00 (0.980)

Male studies

0.34 (0.034)

0.39 (0.017)

-0.05 (0.739)

Female studies

NA

NA

NA

Horizontal jump distance (3:1)

0.42 (0.006)

0.56 (< 0.001)

0.08 (0.583)

Male studies

0.32 (0.083)

0.59 (0.001)

0.20 (0.285)

Female studies

NA

NA

NA

Squat jump height (2:2)

0.46 (0.011)

0.20 (0.291)

-0.13 (0.558)

Male studies

NA

NA

NA

Female studies

NA

NA

NA

Reactive strength index (5:2)

0.57 (< 0.001)

0.40 (0.002)

-0.12 (0.330)

Male studies

0.66 (< 0.001)

0.45 (0.001)

-0.11 (0.416)

Female studies

NA

NA

NA

Countermovement jump height (4:3)

0.50 (0.088)

0.36 (0.061)

0.10 (0.499)

Male studies

0.87 (0.084)

0.51 (0.090)

0.03 (0.878)

Female studies

0.12 (0.637)

0.16 (0.501)

0.27 (0.462)

  1. *Values denote effect size (p-value; bold values denote significance)
  2. Favouring the pre-PHV group
  3. §Studies involved sport-specific testing for ball kicking velocity/distance, except one study that involved dribbling velocity. However, when removed from the analysis, the results remained consistent across comparisons (details in Additional file 1: Figs. S1, S9 and S17)
  4. ¥Denotes the number of studies included in meta-analysis conducted in males:females
  5. NA: not available analysis, due to lack of adequate number (i.e. ≤ 3) of studies for meta-analysis; PHV: age of peak height velocity; COD: change-of-direction; PJT: plyometric-jump training