Fig 1.
Comparison of mean values (+/ SD) between chronological (U14 & U15) and bio-banded maturity groups for anthropometric (stature, sitting height and body-mass) with effect sizes for between maturity status group (a—’pre-PHV’; b—’circa-PHV’; c–‘post-PHV) magnitude. Effect Sizes: T–Trivial, S–Small, M–Moderate, L–Large, VL–Very Large; Trivial < 0.2, Small 0.2–0.6, Moderate 0.6–1.2, Large 1.2–2.0, Very Large > 2.0 [37].
Table 1.
Summary table of the coefficient of variance (CV%) for U13 and U14 academy soccer players anthropometric characteristics when categorised using an aggregated chronological age group or three different Mirwald, Baxter-Jones [23], Fransen, Bush [24] and Moore, McKay [29] bio-banding (pre-PHV, circa-PHV and post-PHV) methods.
Table 2.
Summary table of the mean values and between maturity grouping effect sizes for U13 and U14 academy soccer players physical fitness characteristics when categorised using an aggregated chronological age group or three different Mirwald, Baxter-Jones [23], Fransen, Bush [24] and Moore, McKay [29] bio-banding (pre-PHV, circa-PHV and post-PHV) methods.
Table 3.
Summary table of the coefficient of variance (CV%) for U13 and U14 academy soccer players physical fitness characteristics when categorised using an aggregated chronological age group or three different Mirwald, Baxter-Jones [23], Fransen, Bush [24] and Moore, McKay [29] bio-banding (pre-PHV, circa-PHV and post-PHV) methods.
Table 4.
Summary table of the coefficient of variance (CV%) for U13 and U14 academy soccer players functional movement characteristics when categorised using an aggregated chronological age group or three different Mirwald, Baxter-Jones [23], Fransen, Bush [24] and Moore, McKay [29] bio-banding (pre-PHV, circa-PHV and post-PHV) methods.
Fig 2.
Comparison of proportion of players within each grouping (a—chronological or maturity status; b–Mirwald, Baxter-Jones. [23] c–Moore, McKay. [29]; d–Fransen, Bush [24]) bio-banding ‘pre = PHV’ (pre), ‘circa-PHV’ (circa) and ‘post-PHV’ (post)) achieving the threshold value of ≥2 (≥14 for composite FMS) for all measures of functional movement and postural assessment.