Saudi Journal of Sports Medicine

LETTER TO EDITOR
Year
: 2020  |  Volume : 20  |  Issue : 3  |  Page : 88-

The effects of circular resistance training on urinary protein in females


Suzan Sanavi1, Sara Ghanipoor2, Mohammad-Ali Kohanpour3,  
1 Social Security Organization, Abu Rayhan Clinic, Tehran, Iran
2 Department of Physical Education, University of Shiraz, Shiraz, Fars, Iran
3 Department of Physical Education, Islamic Azad University, Larestan Branch, Fars, Iran

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




How to cite this article:
Sanavi S, Ghanipoor S, Kohanpour MA. The effects of circular resistance training on urinary protein in females.Saudi J Sports Med 2020;20:88-88


How to cite this URL:
Sanavi S, Ghanipoor S, Kohanpour MA. The effects of circular resistance training on urinary protein in females. Saudi J Sports Med [serial online] 2020 [cited 2022 May 22 ];20:88-88
Available from: https://www.sjosm.org/text.asp?2020/20/3/88/310617


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.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References

1Zorbas YG, Kakurin VJ, Denogratov SD, Yarullin VL, Deogenov VA. Urinary and serum electrolyte changes in athletes during periodic and continuous hypokinetic and ambulatory conditions. Biol Trace Elem Res 2001;80:201-19.
2Brzycki M. Strength testing-predicting a one-rep max from reps-to-fatigue. J Phys Educ Recreation Dance 1993;68:88-90.
3Sanavi S, Kohanpour MA, Kohanpour M. Effects of intermittent and continuous resistance training on proteinuria and hematuria in trained young women. Clin Kidney J 2012;5:375-6.
4Noakes TD, Sharwood K, Speedy D, Hew T, Reid S, Dugas J, et al. Three independent biological mechanisms cause exercise-associated hyponatremia: Evidence from 2,135 weighed competitive athletic performances. Proc Natl Acad Sci U S A 2005;102:18550-5.