Correspondence Address:
Dr. Suzan Sanavi
Social Security Organization, Abou-Reyhan Clinic, Tehran
Iran

Full Text

Proteinuria may interfere renal function by altering glomerular filtration rate in the long term. As exercise can induce proteinuria, we designed a study to determine how circular resistance trainings affect urinary protein in untrained young females. For this purpose, forty healthy females, aged 20–25 years (mean age = 22.175 ± 1.8 years, height = 161.91 ± 4.09 cm, weight = 65.40 ± 6.53 kg, body mass index = 21.97 ± 0.9 kg/m2, and VO2 max = 83.82 ± 1.57 mL/kg/min), were randomly divided into circular resistance training (A) and control (B) groups (n = 20, each). All participants attended the test session 2 days before starting the program until 2 days after the end and got education of strength movements, measurement of physical characteristics, and calculation of one repetition maximum strength.[1] A test session was performed with the intensity of 20% of one repetition maximum in Group A, and urine samples were collected at 0 and 1 h. The training protocol was done 3 days per week lasting 2 months with increasing workload between 20% and 55%. Each 65-min session included warming, resistance training, and cool down exercise, composed of seven movements in the trunk and lower extremity as pressing and stretching (each movement lasting 2.5 min with 1-min resting interval). Each movement was performed with an intermittent speed, controlled by a metronome (V = one attempt/2.5 s), in the manner of 2 V for 10 s and ½ V for 20 s, sequentially.[2],[3] Two days after the end of the protocol, urine samples for protein, using repeated-measures ANOVA test, were collected as pretraining and posttraining 2 stages (comparing to pretraining and posttrainng 1 at test session).

Proteinuria increased statistically significantly compared to that of the control group (P < 0.05). However, albuminuria and β-2 microglobulinuria showed increasing amounts in both Groups A and B (P < 0.05), though total proteinuria had only increased among the training group (P < 0.05). The urinary protein/creatinine ratio and hematuria statistically significantly increased in Group A (P < 0.05). In conclusion, circular resistance trainings may induce nonnephrotic range proteinuria and hematuria.[4] Long-term effects of this situation on renal function should be investigated in future studies.

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Nil.

Conflicts of interest

There are no conflicts of interest.

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