Fitness Training and Biomechanics Laboratory, Technical Department, Italian Football Federation (FIGC), Coverciano, Florence, Italy.
University of Rome Tor Vergata, Rome, Italy.
Eur J Appl Physiol. 2020 Jan;120(1):137-147. doi: 10.1007/s00421-019-04258-8. Epub 2019 Nov 9.
To examine the suitability of three versions and two levels of the Yo-Yo intermittent tests for assessing and tracking aerobic fitness status development in male recreational football players. Sixty-six untrained participants (age 39 ± 6 years, VO 41.2 ± 6.2 ml kg min, body mass 81.9 ± 10.8 kg, height 173.2 ± 6.4 cm) partook in a 12-week recreational football training program. They were evaluated during the Yo-Yo intermittent endurance level 1 (YYIE1) and 2 (YYIE2) tests and the Yo-Yo intermittent recovery level 1 test (YYIR1), and during a treadmill test for VO assessment, at baseline. Thirty-two out of these 66 participants replicated all these tests at post-intervention. An additional group of 30 male age-matched recreational football players that afterwards started the 12-week recreational football program (age 39 ± 6 years, VO 45.3 ± 5.8 ml kg min, body mass 82.5 ± 7.8 kg, height 172.8 ± 5.4 cm) was evaluated at baseline to test cross-validation.
The Yo-Yo tests showed very large associations with VO at baseline (r = 0.75-0.77; P < 0.0001) and at post-intervention (r = 0.76-0.82; P < 0.0005). Post-training, very large associations were found between YYIE2 performance and VO (r = 0.65, P < 0.0001). Cross-validation revealed small to large differences between the observed and estimated VO values (1.5-2.96 ml kg min) with moderate typical error of estimation (7.9-8.7%) across the tests. Performance in the YYIE1, YYIE2 and YYIR1 tests of ≥ 1760, 480 and 600 m, respectively, indicated good to excellent VO values.
The Yo-Yo tests considered here showed robust and consistent criterion validity. The YYIE2 could be a more accurate option to track aerobic fitness development in recreational football players.
探讨三种版本和两种水平的 Yo-Yo 间歇性测试在评估和跟踪男性业余足球运动员有氧健身状态发展方面的适用性。66 名未受过训练的参与者（年龄 39±6 岁，VO41.2±6.2ml·kg·min-1，体重 81.9±10.8kg，身高 173.2±6.4cm）参加了 12 周的业余足球训练计划。他们在 Yo-Yo 间歇性耐力 1 级（YYIE1）和 2 级（YYIE2）测试以及 Yo-Yo 间歇性恢复 1 级测试（YYIR1）中进行了评估，并在基线时在跑步机上进行了 VO 评估。其中 32 名参与者在干预后重复了所有这些测试。另一组 30 名年龄匹配的业余足球运动员在参加完 12 周的业余足球训练计划后（年龄 39±6 岁，VO45.3±5.8ml·kg·min-1，体重 82.5±7.8kg，身高 172.8±5.4cm）在基线时进行了评估，以测试交叉验证。
Yo-Yo 测试与基线时的 VO（r=0.75-0.77；P<0.0001）和干预后（r=0.76-0.82；P<0.0005）非常相关。训练后，YYIE2 表现与 VO 之间存在非常大的关联（r=0.65，P<0.0001）。交叉验证显示，观察值和估计值之间存在较小到较大的差异（1.5-2.96ml·kg·min），测试的估计误差中位数为 7.9-8.7%。YYIE1、YYIE2 和 YYIR1 测试中分别达到≥1760、480 和 600m 的表现，表明 VO 值良好到优秀。
这里考虑的 Yo-Yo 测试显示出了强大而一致的标准有效性。YYIE2 可能是跟踪业余足球运动员有氧健身发展的更准确选择。
