Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial
Abstract Background A low urine pH is a characteristic metabolic feature of metabolic syndrome and type 2 diabetes. The purpose of the current study was to investigate the effects of a 12-week home-based bench step exercise on the urine pH status of elderly female subjects. Methods The current study...
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| Format: | Article |
| Language: | English |
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BMC
2017-05-01
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| Series: | European Review of Aging and Physical Activity |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11556-017-0176-4 |
| _version_ | 1818437913598230528 |
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| author | Yuichiro Nishida Keitaro Tanaka Megumi Hara Noriko Hirao Hiroaki Tanaka Takuro Tobina Masaharu Ikeda Hiroshi Yamato Masanori Ohta |
| author_facet | Yuichiro Nishida Keitaro Tanaka Megumi Hara Noriko Hirao Hiroaki Tanaka Takuro Tobina Masaharu Ikeda Hiroshi Yamato Masanori Ohta |
| author_sort | Yuichiro Nishida |
| collection | DOAJ |
| description | Abstract Background A low urine pH is a characteristic metabolic feature of metabolic syndrome and type 2 diabetes. The purpose of the current study was to investigate the effects of a 12-week home-based bench step exercise on the urine pH status of elderly female subjects. Methods The current study is a secondary analysis of a randomized controlled trial (RCT) in which 59 postmenopausal female subjects were randomized to either the exercise group (n = 29) or the control group (n = 30). The subjects in the exercise group were instructed to perform home-based exercises using a bench step at the anaerobic threshold (AT), with a goal of performing ≥140 min/week at home for 12 weeks. The subjects in the control group were instructed to not change their normal lifestyle. Urine was collected after overnight fasting, and the urine pH was measured using a urinary test strip. The inter-group-differences at baseline and the pre-post changes within groups were assessed using the Mann-Whitney U test and Wilcoxon’s signed-rank test, respectively. Additionally, the difference in the post-intervention urine pH levels of the two groups, adjusted for the pre-intervention values (the estimated effect size) and the precision (95% confidence intervals) were investigated using an analysis of covariance. Results The pre-post comparison of the urine pH data using Wilcoxon’s signed-rank test showed a significant increase in the urine pH levels of the exercise group (p < 0.05); there was no significant change in the urine pH levels of the control group. However, the estimated effect size (0.15) was small and the confidence interval straddled 0 (−0.25–0.55). Conclusions Based on the results of the current secondary analysis of an RCT, we could not clearly conclude that exercise has a beneficial effect on the urine pH. Further well-designed RCTs should be conducted to determine whether aerobic exercise is truly able to ameliorate urine acidification. Trial registration The study was retrospectively registered in the University Hospital Medical Information Network (UMIN) as “Effect of step exercise on aerobic fitness and progression of atherosclerosis in the elderly” under the registration number UMIN 000026743 (the date of registration: March 28, 2017). |
| first_indexed | 2024-12-14T17:32:14Z |
| format | Article |
| id | doaj.art-0221f80558694f318c0c18453419cb01 |
| institution | Directory Open Access Journal |
| issn | 1813-7253 1861-6909 |
| language | English |
| last_indexed | 2024-12-14T17:32:14Z |
| publishDate | 2017-05-01 |
| publisher | BMC |
| record_format | Article |
| series | European Review of Aging and Physical Activity |
| spelling | doaj.art-0221f80558694f318c0c18453419cb012022-12-21T22:53:05ZengBMCEuropean Review of Aging and Physical Activity1813-72531861-69092017-05-011411810.1186/s11556-017-0176-4Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trialYuichiro Nishida0Keitaro Tanaka1Megumi Hara2Noriko Hirao3Hiroaki Tanaka4Takuro Tobina5Masaharu Ikeda6Hiroshi Yamato7Masanori Ohta8Department of Preventive Medicine, Faculty of Medicine, Saga UniversityDepartment of Preventive Medicine, Faculty of Medicine, Saga UniversityDepartment of Preventive Medicine, Faculty of Medicine, Saga UniversityLaboratory of Exercise Physiology, Faculty of Sports and Health Science, Fukuoka UniversityLaboratory of Exercise Physiology, Faculty of Sports and Health Science, Fukuoka UniversityFaculty of Nursing and Nutrition, University of NagasakiFukuseikai Minami HospitalDepartment of Health Development, Institute of Industrial Ecological Science, University of Occupational and Environmental HealthDepartment of Food and Health Sciences, International College of Arts and Sciences, Fukuoka Women’s UniversityAbstract Background A low urine pH is a characteristic metabolic feature of metabolic syndrome and type 2 diabetes. The purpose of the current study was to investigate the effects of a 12-week home-based bench step exercise on the urine pH status of elderly female subjects. Methods The current study is a secondary analysis of a randomized controlled trial (RCT) in which 59 postmenopausal female subjects were randomized to either the exercise group (n = 29) or the control group (n = 30). The subjects in the exercise group were instructed to perform home-based exercises using a bench step at the anaerobic threshold (AT), with a goal of performing ≥140 min/week at home for 12 weeks. The subjects in the control group were instructed to not change their normal lifestyle. Urine was collected after overnight fasting, and the urine pH was measured using a urinary test strip. The inter-group-differences at baseline and the pre-post changes within groups were assessed using the Mann-Whitney U test and Wilcoxon’s signed-rank test, respectively. Additionally, the difference in the post-intervention urine pH levels of the two groups, adjusted for the pre-intervention values (the estimated effect size) and the precision (95% confidence intervals) were investigated using an analysis of covariance. Results The pre-post comparison of the urine pH data using Wilcoxon’s signed-rank test showed a significant increase in the urine pH levels of the exercise group (p < 0.05); there was no significant change in the urine pH levels of the control group. However, the estimated effect size (0.15) was small and the confidence interval straddled 0 (−0.25–0.55). Conclusions Based on the results of the current secondary analysis of an RCT, we could not clearly conclude that exercise has a beneficial effect on the urine pH. Further well-designed RCTs should be conducted to determine whether aerobic exercise is truly able to ameliorate urine acidification. Trial registration The study was retrospectively registered in the University Hospital Medical Information Network (UMIN) as “Effect of step exercise on aerobic fitness and progression of atherosclerosis in the elderly” under the registration number UMIN 000026743 (the date of registration: March 28, 2017).http://link.springer.com/article/10.1186/s11556-017-0176-4Older femalesUric acidificationAerobic exercise |
| spellingShingle | Yuichiro Nishida Keitaro Tanaka Megumi Hara Noriko Hirao Hiroaki Tanaka Takuro Tobina Masaharu Ikeda Hiroshi Yamato Masanori Ohta Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial European Review of Aging and Physical Activity Older females Uric acidification Aerobic exercise |
| title | Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial |
| title_full | Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial |
| title_fullStr | Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial |
| title_full_unstemmed | Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial |
| title_short | Influence of a home-based exercise program on the urine pH in elderly female subjects: a secondary analysis of a randomized controlled trial |
| title_sort | influence of a home based exercise program on the urine ph in elderly female subjects a secondary analysis of a randomized controlled trial |
| topic | Older females Uric acidification Aerobic exercise |
| url | http://link.springer.com/article/10.1186/s11556-017-0176-4 |
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