Kishor Keshari Kaushal, Kumar Tarun, Lnu Sunita, Kumar Chandan, Kumar Manish
Physiology, Indira Gandhi Institute of Medical Sciences, Patna, IND.
Cureus. 2023 Jul 14;15(7):e41898. doi: 10.7759/cureus.41898. eCollection 2023 Jul.
Background The variability in hemodynamic responses to isometric handgrip exercise in people with different body mass indices (BMIs) is noteworthy due to the frequent incidence of hypertension, obesity, and related cardiovascular illnesses in India. This investigation may be necessary to anticipate and prevent excessive heart strain during static activities. Therefore, this study aimed to evaluate the impact of isometric handgrip exercise on cardiorespiratory responses in an Indian population with varying BMI levels. The objective was to compare the cardiovascular responses of obese and non-obese individuals to an isometric handgrip exercise test (heart rate, systolic blood pressure, diastolic blood pressure, rate pressure product, and mean arterial pressure). Methodology This study was conducted from April 2021 to October 2022. Measurements were obtained using a pedestal-style weighing scale with a maximum capacity of 120 kg and an accuracy of 100 g at the Department of Physiology, Indira Gandhi Institute of Medical Sciences, Patna. Sphygmomanometer was used for measuring blood pressure, and a stopwatch was used to time the duration of each prolonged isometric contraction performed by the participants using a handgrip dynamometer. Baseline measurements of heart rate, blood pressure, cardiac output, and heart rate variability were done during the final three minutes of the rest phase and once more throughout the 10-minute recovery period that followed the isometric handgrip exercise. Results The average heart rate increased during the isometric handgrip exercise in the obese group (13.02 ± 1.88 beats per minute). Systolic blood pressure increased by 16.40 ± 2.65 mmHg and 23.66 ± 3.14 mmHg in the obese group and the normal weight group, respectively. The diastolic blood pressure increased similarly in the overweight and normal weight groups, measuring 18.64 ± 3.63 mmHg and 12.14 ± 1.95 mmHg, respectively. Furthermore, the mean blood pressure increased by 20.45 ± 3.13 mmHg and 13.67 ± 1.64 mmHg, respectively, both in the normal and overweight groups. Conclusions Obese individuals had greater resting heart rates, systolic blood pressure, and diastolic blood pressure than non-obese individuals. Following an isometric handgrip workout, non-obese individuals reported greater increases in heart rate, systolic blood pressure, and diastolic blood pressure than obese individuals.
在印度，高血压、肥胖症及相关心血管疾病的发病率很高，因此不同体重指数（BMI）的人对等长握力运动的血流动力学反应的变异性值得关注。这项调查对于预测和预防静态活动期间的过度心脏负荷可能是必要的。因此，本研究旨在评估等长握力运动对不同BMI水平的印度人群心肺反应的影响。目的是比较肥胖和非肥胖个体对等长握力运动测试的心血管反应（心率、收缩压、舒张压、心率血压乘积和平均动脉压）。
本研究于2021年4月至2022年10月进行。在巴特那英迪拉甘地医学科学研究所生理学系，使用最大容量为120千克、精度为100克的台秤进行测量。使用血压计测量血压，并用秒表记录参与者使用握力计进行的每次长时间等长收缩的持续时间。在休息阶段的最后三分钟以及等长握力运动后的10分钟恢复期内再次进行心率、血压、心输出量和心率变异性的基线测量。
肥胖组在等长握力运动期间平均心率增加（每分钟13.02±1.88次心跳）。肥胖组和正常体重组的收缩压分别升高了16.40±2.65 mmHg和23.66±3.14 mmHg。超重和正常体重组的舒张压也有类似升高，分别为18.64±3.63 mmHg和12.14±1.95 mmHg。此外，正常组和超重组的平均血压分别升高了20.45±3.13 mmHg和13.67±1.64 mmHg。
肥胖个体的静息心率、收缩压和舒张压高于非肥胖个体。在进行等长握力锻炼后，非肥胖个体的心率、收缩压和舒张压的升高幅度高于肥胖个体。
