TY - JOUR

T1 - Technical actions, heart rate, and locomotor activity in 7v7 and 8v8 games for female youth soccer players

AU - Ørntoft, Christina Øyangen

AU - Larsen, Malte Nejst

AU - Andersen, Thomas Bull

AU - Steentoft Rasmussen, Lasse

AU - Póvoas, Susana C A

AU - Randers, Morten Bredsgaard

AU - Krustrup, Peter

N1 - CURIS 2016 NEXS 331

PY - 2016

Y1 - 2016

N2 - The purpose of this study was to evaluate technical performance, heart rate (HR), and activity profile in 7v7 and 8v8 soccer games for 9[FIGURE DASH]10-year-old girls (U11). A total of 24 female youth players participated in the study, all playing 20-min 7v7 and 8v8 games with 160 and 223 m per player, respectively. Technical actions, HR, and activity profile were measured during the games using video filming, HR monitors, and 5-Hz GPS units. The number of technical actions was higher in 7v7 than in 8v8 games (34±19 (±SD) vs. 28±14, p=0.03, d=0.37), as was the number of successful actions (25±16 vs. 20±12, p=0.01, d=0.35), with no difference in success rate for technical actions (70±13 vs. 69±14%, p=0.63, d=0.07). No differences were found between 7v7 and 8v8 in total distance covered (1574±251 and 1622±281 m, p=0.66, d=0.18), peak speed (19.5±2.6 and 20.7±1.5 km[BULLET OPERATOR]h, p=0.16, d=0.56), mean HR values (85±5 and 86±6%HRpeak, p=0.85, d=0.18), and time >90%HRpeak (37±16 and 34±16% of playing time, p=0.76, d=0.13). Distance covered at the highest running speeds of >16 km[BULLET OPERATOR]h was lower in 7v7 than in 8v8 games (34±24 vs. 63±34 m, p=0.018, d=0.98), as was number of entries into this speed zone (8±5 vs. 13±7, p=0.006, d=0.82). In conclusion, more technical actions and successful actions were observed in 7v7 than in 8v8 games, but players covered more ground with high-speed running in 8v8. This study also revealed that HR values were high in both game formats for U11 adolescent female players, with no difference between formats.

AB - The purpose of this study was to evaluate technical performance, heart rate (HR), and activity profile in 7v7 and 8v8 soccer games for 9[FIGURE DASH]10-year-old girls (U11). A total of 24 female youth players participated in the study, all playing 20-min 7v7 and 8v8 games with 160 and 223 m per player, respectively. Technical actions, HR, and activity profile were measured during the games using video filming, HR monitors, and 5-Hz GPS units. The number of technical actions was higher in 7v7 than in 8v8 games (34±19 (±SD) vs. 28±14, p=0.03, d=0.37), as was the number of successful actions (25±16 vs. 20±12, p=0.01, d=0.35), with no difference in success rate for technical actions (70±13 vs. 69±14%, p=0.63, d=0.07). No differences were found between 7v7 and 8v8 in total distance covered (1574±251 and 1622±281 m, p=0.66, d=0.18), peak speed (19.5±2.6 and 20.7±1.5 km[BULLET OPERATOR]h, p=0.16, d=0.56), mean HR values (85±5 and 86±6%HRpeak, p=0.85, d=0.18), and time >90%HRpeak (37±16 and 34±16% of playing time, p=0.76, d=0.13). Distance covered at the highest running speeds of >16 km[BULLET OPERATOR]h was lower in 7v7 than in 8v8 games (34±24 vs. 63±34 m, p=0.018, d=0.98), as was number of entries into this speed zone (8±5 vs. 13±7, p=0.006, d=0.82). In conclusion, more technical actions and successful actions were observed in 7v7 than in 8v8 games, but players covered more ground with high-speed running in 8v8. This study also revealed that HR values were high in both game formats for U11 adolescent female players, with no difference between formats.

KW - Faculty of Science

KW - Technical performance

KW - GPS

KW - High-intensity running

KW - Movement pattern

KW - U11

KW - Association football

U2 - 10.1519/JSC.0000000000001434

DO - 10.1519/JSC.0000000000001434

M3 - Journal article

C2 - 27050242

VL - 30

SP - 3298

EP - 3303

JO - Journal of Strength and Conditioning Research

JF - Journal of Strength and Conditioning Research

SN - 1064-8011

IS - 12

ER -