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Archives of Endocrinology and Metabolism

Print version ISSN 2359-3997On-line version ISSN 2359-4292

Arch. Endocrinol. Metab. vol.59 no.6 São Paulo Dec. 2015

https://doi.org/10.1590/2359-3997000000102 

Original Articles

Effect of three months of periodized hydrogymnastics exercise program on urinary concentration of deoxypyridinoline in older women

Paulina Yesica Ochoa-Martínez1 

Javier Arturo Hall-Lopez1 

Francisco Argenix Pérez Ávila1 

Cristiano Andrade Quintão Coelho Rocha2 

Maria Helena Rodrigues Moreira2 

Estélio Henrique Martin Dantas3 

1Autonomous University of Baja California, Faculty of Sports, Mexico

2University Tras-os-Montes and Alto Douro, Department of Sport Sciences, Portugal

3Federal University of State of Rio de Janeiro and Tiradentes, Laboratory of Human Motricity Biosciences, Rio de Janeiro, RJ, Brazil


ABSTRACT

Objective

To determine the effect of three months of periodized hydrogymnastics exercise program on urinary concentration of deoxypyridinoline in older women.

Subjects and methods

Twenty-six subjects were randomly assigned in two, intervention group (n = 16) and control group (n = 10). The intervention group followed 12-week of periodized hydrogymnastics training program five times a week, 50 minutes of water exercise with work heart rate reserve of 40-50% (1-6thweek) increasing the load to 50-60% (7-12th week); the control group was not involved in exercise and remained sedentary. The urinary concentration of deoxypyridinoline was evaluated by high resolution liquid chromatography using the reactive immulite pyrilinks-D siemens medical solutions, pretest at the baseline and at the end post-test of the 12-week of water-exercise. As statistical analyses mixed 2 x 2 ANOVA was used, also percentage changes (Δ %) was calculated.

Results

The results did not show significant improvement (p < 0.05) comparing the interaction intergroup and the measurements of urinary concentration of deoxypyridinoline (p = 0.504), percentage change (Δ %) showed positive improvements in the experimental group of -13.7 (nM/mMcreatine) in comparison with -7.1 (nM/mMcreatine) from the control group.

Conclusion

The present study involves periodization increasing the load heart rate reserve of hydrogymnastics exercise in order to produce grater adaptations, but the results showed than is not possible to infer that hydrogymnastics is effective in increase urinary concentration of deoxypyridinoline in older women, will be appropriated in the future more studies to better clarify the possibilities of improvements between hydrogymnastics and urinary concentration of deoxypyridinoline. Arch Endocrinol Metab. 2015;59(6):523-7

Key words: Bone density; older women; exercise; osteoporosis; physical activity

INTRODUCTION

Post-menopausal in women is an aging natural process characterized for gradual reduction in the release of estrogen associated with several morphofunctional changes (1), these changes include a decrease in bone microarchitecture mass than produce osteoporosis (2), there is scientific evidence pointing than presence of osteoporosis in post-menopausal women coincides with incidence of fall related injuries and bone fractures (3,4), moreover, osteoporosis in post-menopausal in women has been identified as a disease that decrease the physical fitness, independence of movement and functional autonomy in completing activities of daily living (5), which affect the social development and decrease the quality of life (6).

Evidence from systematic review and meta-analysis clearly show than physical exercise induce an improvement bone mass content in older women (7-9). Controlled trials in post-menopausal women have been considered physical exercise along with medication and diet one of the three cornerstones of osteoporosis (10,11). By other hand, there are different accepted diagnostic criteria to identify osteoporosis than may partly explain the variability of prevalence (12); also the incidence of physical exercise to induce changes in bone metabolism is determined for the duration, intensity and type of exercises (9).

The deoxypyridinoline has been identified as a good prediction by early change of bone metabolic markers of the efficacy of anti-osteoporotic drugs on bone mass in osteoporotic patients (13-16).

Physical exercise in modalities such as aerobic, strength and electro stimulation exercises showed positive results in bone mineral density assessed by dual-energy X-ray and biochemical markers of bone turnover (osteocalcin, alkaline phosphatase, pyridinoline, and deoxypyridinoline) thus preserving the bone health in elderly (17-19).

However, is not yet fully clarified which would be the best modality, duration, frequency of physical exercise to contribute with bone health evaluated by methods as biochemical markers of bone turnover to verify in a short time curse the efficacy of exercise. To the best of our knowledge there is a lack references than report the incidence of the hydrogimnastic on urinary concentration of deoxypyridinoline in older women. To diminish this feature, this research considered the hydrogimnastic than carried out through realizing rhythmic-gymnastic activities in an aquatic environment (20), this modality of exercise is especially recommended among people who have limitations with do exercise on dry land due to impact (21) and which in the last ten years, has taken popularity and preference among elderly by taking advantage of water properties in order to provide fluidity and a wider range in movements while diminishing the risk of injuries (20). It was found than water exercise in older women provides positives effects on bone and physical function of postmenopausal women (9,22). In this context, in exercise training periodization increasing the load heart rate reserve has been produce grater adaptations (23). The present study involves a periodized hydrogymnastics training program with different frequency, work load intensity and time than other references (9,22). Thus, the aim of this study was to determine the effect of three months of periodized hydrogymnastics exercise program on urinary concentration of deoxypyridinoline in older women.

SUBJECTS AND METHODS

Subjects

Twenty-six elderly women volunteered to partake in the hydrogimnastic program in the aquatic complex of the Faculty of Sports at the Autonomous University of Baja California, accordingly this study focused on older women, exclusion criteria included, not have ambulation capacity, have performed a systematical routine of exercise in the previous six months, to possess any sort of acute or chronic complication that would hinder water exercise, such as heart problems, diabetes mellitus , hypertension or asthma; physical complications that could affect the ability to accomplish exercise such as osteoarthritis, joint injuries or recent bone fractures, psychological and neurological problems or have been taking medicine to treat osteoporosis

The present study followed the ethical principles regarding human experimentation proposed by the Helsinki declaration; all the subjects provided a written consent in order to participate in the study (24), that was approved by the research program of the Faculty of Sports of the Autonomous University of Baja California. Protocol # 149/2/C/13/16.

Study design and testing procedures

Participants were randomly assigned in two, water exercise intervention group (n = 16, age of 67.5 ± 5.4 years) and non-exercising control group (n = 10, age of 67.4 ± 4.7 years) who advised not to join in systemized exercise but to continue with their usual daily physical activities.

In order to determine the evaluation of the dependent variable, urinary concentration of deoxypyridinoline, was performed using the following procedures: a 2-hour fasting morning urine sample was collected at the same time of the day to assess urinary excretion of deoxypyridinoline; the quantifications of urinary concentration of deoxypyridinoline (nM/mMcreatine); it was determined by high resolution liquid chromatography using the reactive immulite pyrilinks-D siemens medical solutions (15); this peptide represents link between collagen molecules, more specifically between their amino and carboxy terminal portions, being released when there bone destruction, its main indication is marker of bone in osteoporosis catabolism, thereby demonstrating greater specificity than other markers of bone resorption (13); the reference values of the results were distributed according to sex and age, and for women the change occurs between 2.5 to 7.4 nM/mMcreatine (15). Measurements were performed at the baseline pretest and immediately upon posttest of the 12-week of water-exercise, only those completing 95% of training adherence were included in the statistical analysis.

Periodized hydrogimnastic training

The water exercise was conducted and supervised by master in sport science specialist also in accordance with physical exercise prescription for older adults established by the American College of Sports Medicine (25). The participants completed three-month of periodized hydrogimnastic training program five times a week, with 50 minutes per session which was comprised by 10 minutes of warm-up, 30 minutes of water exercise training component with intensity monitored by telemetry using a heart rate monitor Polar FT7® (Finland), the work heart rate reserve of 40-50% (1-6th week) increasing the load to 50-60% heart rate reserve (7-12th week) the work heart rate reserve was estimated with the equation Max HR = 208-0.7x age (26), followed by 10 minute of cool down.

Statistical analysis

Statistical analyses were performed using statistical software SPSS for Windows version 20 (IBM Corporation, New York, USA). Mean (M) and (±SD) standard deviation were obtained to calculate the dependent variables; Shapiro-Wilk Test was used in order to determine the normality of the groups and the homogeneity of the sample. Differences inter and intragroup pretest-posttest were determined using mixed 2 x 2 ANOVA (groups x measurements), the significance level were performed of p < 0.05, 95% probability of accuracy of the results or negative event with a probability of 5% per case. Also percentage changes (Δ %) were calculated for each study group [(Media post – Media pre)/Media pre] x 100.

RESULTS

Descriptive statistical (M ± SD) of anthropometric variables and urinary concentration of deoxypyridinoline are presented in table 1, the values showed lower means in experimental group than in control group at the baseline pretest than posttest of the 12-week of hydrogimnastic.

Table 1 Descriptive statistics (M ± SD) of the volunteer women in the study (n = 26) 

Variables Experimental (n = 16)
Control (n = 10)
Pre Post Pre Post
Anthropometric
Weight (kg) 74.09 ± 10.74 73.27 ± 10.81 76.26 ± 15.17 76.29 ± 15.70
Height (cm) 155.95 ± 5.78 155.90 ± 5.72 153.20 ± 5.86 152.41 ± 6.19
BMI (kg/m2) 30.53 ± .9 30.16 ± 4.55 32.60 ± 6.91 32.97 ± 7.19
Dependent
nM/mMcreatine 7.81 ± 1.70 6.74 ± 1.49 7.87 ± 2.41 7.31 ± 2.08

Note: Statistically signicance compared before of 12-week of aquatic exercise program

(p < 0.05) (p = 0.040)

Figure 1 Provides the data of the mixed 2 x 2 ANOVA (groups x measurements) analysis showed significant values (p < 0.05), the results indicated no statistically significant interactions existed (p = 0.504) between the groups and the measurements, neither statistically significant changes were found between groups (p = 0.639) but it showed statistically significant on the measurements (p = 0.040). 

As sown in figure 2, the percentage changes (Δ %) of exercise group attained lower values after treatment.

Figure 2 Percentage changes (Δ %) in the urinary concentration of deoxypyridinoline (M/mMcreatine) among the participants of the study (n = 26). 

Changes in the urinary concentration of deoxypyridinoline (M/mMcreatine) among the participants of the study (n = 26).

DISCUSSION

The main findings of the present research were that twelve weeks of periodized hydrogimnastic training program not improve significant reductions of urinary concentration of deoxypyridinoline, in spide of percentage change (Δ %) showed positive improvements in the experimental group of -13.7 (nM/mMcreatine) in comparison with -7.1 (nM/mMcreatine) from the control group.

In spite of the hydrogimnastic training program in these research was designed five times a week whit periodization in order to produce grater adaptations (23), increasing the load heart rate reserve of 40-50% (1-6th week) increasing the load to 50-60% heart rate reserve (7-12th week) these result was not consistent with a controlled trial than evaluate with biochemical markers of bone turnover in elderly who practice aquatic exercise than showed serum osteocalcin, intra and intergroup statistical differences of p = 0.042 and p = 0.027 (22), other study than showed benefits in bone formation marker assessed by procollagen type 1 amino-terminal propeptide (15.8 %; p = 0.001) after a high-intensity of aquatic exercise program in postmenopausal women (27); these discrepancies with our results may be owing to de time than were performed through 24 weeks of aquatic exercises but with lower frequency (3 times a week) and lower work load intensity by other hand some of these programs where attendance in strength modalities in to the water than may have influence the improvements in bone turnover (9,27).

Regarding the assessment of osteoporosis in elderly population urinary concentration of deoxypyridinoline was chosen for inexpensive, validated, easy to apply bone marker which have been identified as a good prediction by early change of bone metabolic markers of the efficacy of anti-osteoporotic drugs on bone mass in osteoporotic patients (13-16). Strength exercise modalities have been showed better results in in biochemical markers of bone turnover (17,19,28) due the voluntary muscle contraction produces stress on bone morphology and the mechanical load resulting from the muscle contraction induced osteoblast formation and inhibits bone resorption (9) instead of aquatic exercises where the reduction of the gravity forces on human body when immersed in water makes and low high impact seem to be less osteogenic (29).

In geriatrics, gerontology and physical exercise areas, has been proposed during the rehabilitation of osteoporosis disease in order to minimize physical disability and fall accidents (3), due the release of estrogen in post-menopausal women bone metabolic markers as urinary concentration of deoxypyridinoline (30) should be monitored to distinguish the effects of more than 24 weeks of hydrogimnastic training in older women as a non-pharmacological intervention.

Although this study had limitations, by the sample size and did not control the diet as a co variable, our data seem to be of importance in may contribute to better understanding for health professionals when assessing urinary concentration of deoxypyridinoline to plan and control workloads in hydrogimnastic training programs. However in the future, it will be appropriated more studies to better clarify the underlying mechanism between hydrogimnastic and urinary concentration of deoxypyridinoline.

Acknowledgements

the research was funded by internal call number 16th of research project from the Autonomous University of Baja California UABC; Grant 149/2/C/13/16.

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Received: May 12, 2015; Accepted: July 31, 2015

Correspondence to: Javier Arturo Hall-Lopez. Río Mocorito y Monclova Street s/n, Ex ejido Coahuila Neighborhood 21280 – Mexicali Baja California Mexico. javierhall@uabc.edu.mx

Disclosure: no potential conflict of interest relevant to this article was reported.

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