Correlation between body fat percentage with physical fitness in female college students

Abstract

Objective To reveal the relationship between physical fitness and body fat percentage (BFP) among female college students.

Methods During March 2017, BFP and fat free mass were measured among 633 randomly selected healthy female college students. All subjects were divided into five groups based on BFP: low weight, normal weight, high body fat, grade I obesity and grade II/III obesity. Grip strength, leg strength, back strength, vital capacity, maximal oxygen uptake, reaction time, sit-and-reach, back scratch and standing on one foot with closed eyes were tested.

Results There were significant differences between all groups in grip strength, back strength, vital capacity, the absolute and relative value of V02 _max, back scratch on both sides and standing on one foot with closed eyes ( P<0.05). Grade I obesity group showed significant higher vital capacity, but lower relative value of V02 _max, back scratch in both sides compared with normal group. Significant differences were observed in relative value of maximum oxygen uptake and back scratch in both sides between high body fat group and grade I obesity ( P<0.05). Moreover, grade II/III obesity group showed significantly higher grip strength, back strength, vital capacity and absolute V02 _max, but lower relative V02 _max, back scratch in both sides and standing on one foot with closed eyes compared with normal and high body fat groups ( P<0.05). There were significant differences in all the indicators except back strength and the relative V02max between grade II/III obesity and grade I obesity group ( P<0.05).

Conclusion The results showed that physical fitness of female college students with normal body fat percentage is significantly better than that of obese peers. Body fat percentage confers damage for car- diopulmonary endurance fitness and upper limb flexibility fitness when higher than 30% and for balance fitness when higher than 35%.

Abstract

【摘要】目的 揭示女大学生各项身体素质与身体形态之间的关系，为加强女大学生的健康管理提供理论依据。 方 法2017年3月随机抽取井冈山大学633名健康女大学生，测试体脂百分比（BFP) 和去脂体重，并按BFP由低到髙将受 试者分为体脂偏低、正常、体脂偏髙、I级肥胖、II级以上肥胖5个组，测试握力、腿力、背力、肺活量、最大摄氧量、反应时、坐 位体前屈、双手背勾和闭眼单脚站立等身体素质指标。 结果5个组别女大学生握力、背力、肺活量、最大摄氧量绝对值和 相对值、两侧双手背勾、闭眼单脚站立差异均有统计学意义（ P值均<0.05)。进一步的多重比较结果显示，I级肥胖组与正 常组相比，肺活量升髙，相对最大摄氧量、左背勾、右背勾下降；与体脂偏髙组相比，相对最大摄氧量、左背勾、右背勾差异有 统计学意义（ P值均<0.05)。II级以上肥胖组与正常组和体脂偏髙组相比，握力、背力、肺活量、绝对最大摄氧升髙，相对最 大摄氧量、左背勾、右背勾、闭眼单脚站立降低（ P值均<0.05);II级以上肥胖组与I级肥胖组组间除背力和相对最大摄氧 量外，其他指标差异均有统计学意义。 结论BFP正常和偏髙女大学生的身体素质明显好于肥胖女大学生;BFP超过30% 主要使学生的心肺耐力素质、上肢柔韧素质下降，BFP髙于35%同时使平衡素质下降。