Brager Allison J, Mistovich R Justin
1Behavioral Biology Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland; and 2Department of Orthopaedic Surgery, Case Western Reserve University School of Medicine, Cleveland, Ohio.
J Strength Cond Res. 2017 Feb;31(2):462-467. doi: 10.1519/JSC.0000000000001727.
Brager, AJ and Mistovich, RJ. Game times and higher winning percentages of west coast teams of the National Football League correspond with reduced prevalence of regular season injury. J Strength Cond Res 31(2): 462-467, 2017-West coast teams of the National Football League are more statistically likely to win home night games against east coast opponents. The alignment of game times with daily rhythms of alertness is thought to contribute to this advantage. This study aims to determine whether rates of turnovers and injuries during the regular season, putative measures of mental and physical fatigue, impact winning percentages. Regular season schedules and rates of turnovers for each of the 32 teams were obtained from Pro-Football-Reference. We developed our own metric of injury risk for each position obtained from depth charts and regular season schedules. This metric compared cumulative weeks on injury reserve with cumulative time zone travel. West coast teams traveled 4 times as often as east coast teams. However, teams traveling eastward won twice as many games. There was no relationship between the extent and direction of travel and number of turnovers. Losing teams had more turnovers. The offensive and defensive lines in Central Time (CT) were placed on injury reserve 4 times as often as offensive and defensive lines in Pacific Time (PT). Injury prevalence in CT vs. PT was most prominent midseason. Plotting midseason game time relative to biological time revealed that PT teams play games closer to endogenous peaks in alertness, whereas CT teams play games closer to endogenous troughs in alertness. Overall, closer alignment of game time with the endogenous "alerting" signal may protect west coast teams from fatigue-related injuries and suggests for modified strength and conditioning programs.
布拉杰，AJ和米斯托维奇，RJ。美国国家橄榄球联盟西海岸球队的比赛时间和更高的胜率与常规赛伤病患病率的降低相关。《力量与体能训练研究杂志》31(2): 462 - 467，2017年——从统计学角度来看，美国国家橄榄球联盟的西海岸球队在主场夜赛中战胜东海岸对手的可能性更大。比赛时间与日常警觉节奏的一致性被认为是造成这种优势的原因。本研究旨在确定常规赛期间的失误率和受伤率（精神和身体疲劳的假定指标）是否会影响胜率。从职业橄榄球参考网站获取了32支球队各自的常规赛赛程和失误率。我们根据深度表和常规赛赛程为每个位置制定了自己的伤病风险指标。该指标将伤病储备累计周数与累计时区旅行时间进行了比较。西海岸球队的旅行次数是东海岸球队的4倍。然而，向东旅行的球队赢得的比赛场次是向西旅行球队的两倍。旅行的范围和方向与失误次数之间没有关系。输球的球队失误更多。中部时间（CT）的进攻线和防守线被列入伤病储备的频率是太平洋时间（PT）的进攻线和防守线的4倍。中部时间与太平洋时间相比，伤病患病率在赛季中期最为显著。绘制赛季中期比赛时间相对于生物钟时间的图表显示，太平洋时间球队的比赛时间更接近内源性警觉高峰，而中部时间球队的比赛时间更接近内源性警觉低谷。总体而言，比赛时间与内源性“警觉”信号的更紧密匹配可能会保护西海岸球队免受与疲劳相关的伤病，并为调整力量和体能训练计划提供了建议。
