心血管适能和身体成分对大学生橄榄球运动员赛前最大核心温度的影响。
Effects of Cardiovascular Fitness and Body Composition on Maximal Core Temperature in Collegiate Football Players During Preseason.
机构信息
Department of Sports Medicine, West Chester University, West Chester, Pennsylvania.
Department of Health and Exercise Physiology, Ursinus College, Collegeville, Pennsylvania.
出版信息
J Strength Cond Res. 2018 Jun;32(6):1662-1670. doi: 10.1519/JSC.0000000000002027.
McClelland, JM, Godek, SF, Chlad, PS, Feairheller, DL, and Morrison, KE. Effects of cardiovascular fitness and body composition on maximal core temperature in collegiate football players during preseason. J Strength Cond Res 32(6): 1662-1670, 2018-This study evaluated the effects of body mass index (BMI) and aerobic fitness (V[Combining Dot Above]O2max) on maximal core temperature values (Tcmax) in 17 National Collegiate Athletic Association Division III football players during preseason. The subjects included 9 backs (BKs) and 8 linemen (LM). V[Combining Dot Above]O2max testing was performed 1 week before preseason. Core temperature was monitored by ingestible sensor every 10 minutes during practices on day 4 (D1), day 5 (D2), day 7 (D3), and postacclimatization on day 14 (D4). Wet bulb globe temperature (WBGT) was recorded on each collection day. Independent, paired t-tests and Pearson's correlations were performed (α = 0.05). There were no significant correlations between V[Combining Dot Above]O2max and Tcmax on D1 (WBGT = 29.07° C) or D2 (WBGT = 30.93° C), but on D3 (WBGT = 31.39° C) there was a nonsignificant moderate negative correlation (r = -0.564, p = 0.090). There were no significant correlations between BMI and Tcmax on D1 or D2, but on D3 there was a nonsignificant moderate positive correlation (r = 0.596, p = 0.069). Paired t-tests revealed that overall Tcmax (D1-3) (38.56 ± 0.32° C) was statistically higher (p = 0.002) than D4 (38.16 ± 0.30° C). Independent t-tests between groups showed that the Tcmax values during preacclimatization (D1-D3) were significantly higher in LM (38.50 ± 0.37° C) than BKs (38.16 ± 0.35° C) (p = 0.007). V[Combining Dot Above]O2max was significantly lower (p = 0.006) in LM (36.89 ± 6.40 ml·kg·min) than BKs (47.44 ± 7.09 ml·kg·min), and BMI was significantly higher (p = 0.019) in LM (35.59 ± 4.00 kg·m) than BKs (28.68 ± 3.38 kg·m). The results of this study demonstrate that LM are significantly less fit than BKs and have a greater BMI. When WBGT was the highest on D3, the results suggest that those with lower V[Combining Dot Above]O2max and higher BMI experienced a higher Tcmax.
麦克莱兰，JM，戈德克，SF，恰尔德，PS，费尔赫勒，DL，莫里森，KE。心血管健康和身体成分对大学橄榄球运动员 preseason 期间最大核心温度的影响。J 强量研究 32(6)：1662-1670，2018-本研究评估了身体质量指数（BMI）和有氧健身（V[组合点以上]O2max）对 17 名大学生体育协会 III 级足球运动员 preseason 期间最大核心温度值（Tcmax）的影响。受试者包括 9 名后卫（BKs）和 8 名线人（LM）。V[组合点以上]O2max 测试在 preseason 前一周进行。核心温度通过可食用传感器在第 4 天（D1）、第 5 天（D2）、第 7 天（D3）和第 14 天（D4）的适应后每 10 分钟监测一次。湿球黑球温度（WBGT）在每次采集日记录。进行独立配对 t 检验和 Pearson 相关性分析（α=0.05）。在 D1（WBGT=29.07°C）或 D2（WBGT=30.93°C）时，V[组合点以上]O2max 和 Tcmax 之间没有显著相关性，但在 D3（WBGT=31.39°C）时，存在非显著中度负相关（r=-0.564，p=0.090）。在 D1 或 D2 时，BMI 和 Tcmax 之间没有显著相关性，但在 D3 时，存在非显著中度正相关（r=0.596，p=0.069）。配对 t 检验显示，总体 Tcmax（D1-3）（38.56±0.32°C）明显高于 D4（38.16±0.30°C）（p=0.002）。组间独立 t 检验显示，在预适应期（D1-D3）期间，LM 的 Tcmax 值（38.50±0.37°C）明显高于 BKs（38.16±0.35°C）（p=0.007）。LM 的 V[组合点以上]O2max 明显低于 BKs（p=0.006），分别为（36.89±6.40ml·kg·min）和（47.44±7.09ml·kg·min），而 BMI 明显高于 BKs（p=0.019），分别为（35.59±4.00kg·m）和（28.68±3.38kg·m）。本研究结果表明，LM 的体能明显低于 BKs，BMI 也更高。当 D3 的 WBGT 最高时，结果表明，那些 V[组合点以上]O2max 较低、BMI 较高的人经历了更高的 Tcmax。
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