a Human Performance Laboratory , Auburn University at Montgomery , Montgomery , AL , USA.
J Sports Sci. 2014;32(11):1084-90. doi: 10.1080/02640414.2013.879672. Epub 2014 Feb 7.
This study was conducted to determine if the Polar FT40 could accurately track changes in maximal oxygen consumption (VO2max) in a group of female soccer players. Predicted VO2max (pVO2max) via the Polar FT40 and observed VO2max (aVO2max) from a maximal exercise test on a treadmill were determined for members of a collegiate soccer team (n = 20) before and following an 8-week endurance training protocol. Predicted (VO2max and aVO2max measures were compared at baseline and within 1 week post-training. Change values (i.e., the difference between pre to post) for each variable were also determined and compared. There was a significant difference in aVO2max (pre = 43.6 ± 2.4 ml · kg · min(-1), post = 46.2 ± 2.4 ml · kg · min(-1), P < 0.001) and pVO2max (pre = 47.3 ± 5.3 ml · kg · min(-1), post = 49.7 ± 6.2 ml · kg · min(-1), P = 0.009) following training. However, predicted values were significantly greater at each time point compared to observed values (P < 0.001 at pre and P = 0.008 at post). Furthermore, there was a weak correlation between the change in aVO2max and the change in pVO2max (r = 0.18, P = 0.45). The Polar FT40 does not appear to be a valid method for predicting changes in individual VO2max following 8 weeks of endurance training in female collegiate soccer players.
这项研究旨在确定 Polar FT40 是否能准确地跟踪一组女性足球运动员最大摄氧量（VO2max）的变化。在一项关于跑步机的最大运动测试中，确定了大学生足球队成员（n = 20）在进行 8 周耐力训练前后的 Polar FT40 预测 VO2max（pVO2max）和观察 VO2max（aVO2max）。在基线和训练后 1 周内比较了预测（VO2max 和 aVO2max 测量值。还确定并比较了每个变量的变化值（即，前后差值）。aVO2max（pre = 43.6 ± 2.4 ml · kg · min(-1)，post = 46.2 ± 2.4 ml · kg · min(-1)，P < 0.001）和 pVO2max（pre = 47.3 ± 5.3 ml · kg · min(-1)，post = 49.7 ± 6.2 ml · kg · min(-1)，P = 0.009）在训练后有显著差异。然而，预测值在每个时间点都明显大于观察值（pre 时 P < 0.001，post 时 P = 0.008）。此外，aVO2max 的变化与 pVO2max 的变化之间存在弱相关性（r = 0.18，P = 0.45）。Polar FT40 似乎不是预测女性大学生足球运动员经过 8 周耐力训练后个体 VO2max 变化的有效方法。
