Journal List > Korean J Adult Nurs > v.27(4) > 1076345

Park, Lee, Shin, Shin, Yoon, Jeon, and Cho: Development of a Smartphone Application for Promoting Bone Health in Korean Young Adult Women: A Pilot Study

Abstract

Purpose

The purpose of this study was to develop a smartphone application and evaluate it's effectiveness and usability for promoting bone health in Korean young adult women.

Methods

A smartphone application was developed covering exercise, nutrition, and health habits related to bone health. A pilot testing was conducted using a one-group pre/posttest design. A total of 22 female college students with low bone mass participated in the 8-week use of a pilot testing.

Results

The “Strong bone Fit body (SbFb)" application was developed using Android platform. In the pilot testing, bone mineral density, serum CTX, and 25 (OH)Vit.D were significantly decreased. There is no significant change in serum osteocalcin and calcium. Serum phosphorus concentration, nutrient intakes (fiber, VitB6, and pantotenic acid), and all bone composition profiles were significantly increased. Bone-health knowledge was significantly increased but no change in health belief and self-efficacy.

Conclusion

The results of this pilot testing suggest the effectiveness of the SbFb application to enhance and promote self-managing abilities for bone health. It can provide continuous feedback and high-quality bone health information. However, some contents and working methods of the application need to be modified and its effectiveness on bone health requires further investigations.

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Figure 1.
Screenshots of ‘Strong Bone Fit Body' application.
kjan-27-459f1.tif
Table 1.
Mean Differences of BMD, BTMs, Body Composition, and Psychosocial Variables between Pretest and Posttest (N=22)
Variables Pretest Posttest Difference t (p)
M±SD M±SD M±SD
BMD Z-score -1.55±0.65 -1.87±0.57 0.32±0.25 6.18 (<.001)
T-score -1.48±0.59 -1.79±0.51 0.31±0.23 6.34 (<.001)
SOS (m/sec) 1,526.26±23.88 1,517.20±22.76 9.06±11.23 3.78 (.001)
BUA (dB/MHz) 38.54±9.54 33.57±7.26 4.96±6.94 3.35 (.003)
BQI 76.41±11.08 70.65±9.73 5.76±4.33 6.24 (<.001)
BMs Osteocalcin (ng/mL) 19.12±4.63 21.54±5.48 -2.27±5.40 -1.93 (.068)
CTX (ng/mL) 0.41±0.17 0.32±0.13 0.08±0.13 2.55 (.020)
Calcium (mg/dL) 9.61±0.35 9.42±0.74 0.17±0.83 0.95 (.355)
Phosphorus (mg/dL) 3.95±0.42 4.33±0.52 -0.41±0.55 -3.42 (.027)
25 (OH)Vit D 13.92±3.53 8.77±3.08 5.17±2.69 8.37 (<.001)
Body composition Body weight 50.02±4.90 50.94±4.98 -0.92±0.85 -5.11 (<.001)
Free fat mass 38.18±2.66 38.54±2.81 -0.36±0.63 -2.69 (.014)
Body fat mass 11.84±2.74 12.40±2.70 -0.56±0.60 -4.43 (<.001)
Muscle 35.31±2.41 35.60±2.56 -0.29±0.59 -2.31 (.031)
Body fluid 27.50±1.91 27.75±2.03 -0.25±0.46 -2.57 (.018)
BMI 19.29±1.65 19.64±1.69 -0.35±0.31 -5.27 (<.001)
Body fat ratio 23.44±3.28 24.14±3.12 -0.70±1.00 -3.30 (.003)
Abdominal fat ratio 0.73±0.03 0.73±0.03 -0.01±0.01 -2.22 (.038)
Psychosocial variables related to bone health
Knowledge   16.90±2.41 17.79±1.53 0.91±1.44 -3.03 (.006)
Health belief Susceptibility 19.14±3.75 19.64±4.46 -0.50±3.17 -0.74 (.468)
Seriousness 17.14±3.85 18.45±5.51 -1.32±5.30 -1.17 (.267)
Benefit exercise 24.64±2.82 24.73±2.00 -0.09±2.78 -0.15 (.879)
Benefit calcium intake 21.82±2.99 22.59±2.34 -0.77±2.33 -1.56 (.135)
Barriers exercise 15.41±4.78 17.18±3.72 -1.77±4.09 -2.03 (.055)
Barriers calcium intake 13.18±3.08 13.05±3.79 0.14±3.52 0.18 (.858)
Health motivation 20.59±3.70 20.18±3.65 0.41±2.58 0.74 (.465)
Self-efficacy 125.23±19.13 117.00±20.92 8.23±28.45 1.36 (.189)
Exercise self-efficacy 59.07±14.30 52.83±14.47 6.22±18.69 1.60 (.125)
Calcium intake self-efficacy 66.33±11.80 64.08±12.86 2.65±13.74 0.93 (.365)

BMD=bone mineral density, BMs=biochemical bone markers, SOS=speed of sound, BUA=broadband ultrasound attenuation, BQI=bone quality index, CTX=C-telopeptide of collagen cross-links, BMI=body mass index.

Table 2.
Mean Differences of Nutrients Intakes between Pretest and Posttest (N=22)
Nutrients Pretest Posttest Difference t (p)
M±SD M±SD M±SD
Calolie (Kcal) 1,389.37±303.71 1,437.92±341.98 -48.55±92.06 -0.53 (.603)
Carbohydrate (g) 192.26±49.78 200.33±44.31 -8.07±12.91 -0.63 (.539)
Fat (g) 43.78±11.02 45.25±15.03 -1.47±17.21 -0.40 (.692)
Protein (g) 51.20±13.82 57.15±17.05 1.59±13.28 0.56 (.580)
Fiber (g) 11.62±3.22 13.81±3.93 -2.19±4.33 -2.37 (.027)
Water (mL) 679.50±263.74 656.01±213.26 23.48±222.40 0.50 (.626)
Vit. A (㎍) 564.31±361.21 662.57±259.52 -98.27±393.20 -1.17 (.254)
Vit. D (㎍) 2.65±2.26 2.64±2.13 0.01±3.13 0.01 (.996)
Vit. E (mg) 11.37±5.20 12.61±5.05 -1.25±6.67 -0.88 (.390)
Vit. K (㎍) 95.16±72.96 114.68±62.78 -19.53±72.54 -1.26 (.221)
Vit. C (mg) 55.62±36.32 57.88±27.91 -2.26±43.11 -0.25 (.808)
Thiamin (mg) 0.93±0.28 0.97±0.29 -0.04±0.33 -0.59 (.562)
Riboflabin (mg) 1.00±0.47 1.13±0.40 -0.13±0.51 -1.19 (.246)
Niacin (mg) 12.05±4.01 12.53±3.74 -0.48±4.82 -0.46 (.649)
Vit. B6 (mg) 0.98±0.35 1.16±0.37 -0.18±0.39 -2.19 (.040)
Folic acid (㎍) 270.55±123.10 316.25±103.35 -45.70±122.60 -1.75 (.095)
Vit B12 (㎍) 4.95±3.90 6.54±3.31 -1.59±4.29 -1.73 (.098)
Panto (mg) 3.03±1.12 3.63±1.06 -0.60±1.28 -2.21 (.039)
Biotin (㎍) 11.08±7.72 14.38±7.13 -3.31±9.55 -1.62 (.119)
Calcium (mg) 411.84±151.35 440.64±225.39 -28.80±227.40 -0.59 (.559)
Phosphorus (mg) 734.99±186.68 779.01±185.52 -44.02±250.80 -0.82 (.420)
Sodium (mg) 2,571.32±904.17 2,615.02±732.55 -43.70±1215.30 -0.17 (.868)
Chroride (mg) 247.02±145.09 407.73±315.92 -160.70±380.70 -1.98 (.061)
magnesium (mg) 53.26±21.14 60.92±22.62 -7.67±35.98 -1.00 (.329)
Fe (mg) 9.56±3.23 12.04±4.92 -2.48±6.32 -1.84 (.080)
Zn (mg) 6.61±1.83 7.63±1.91 -1.02±2.67 -1.78 (.089)
Cu (㎍) 0.75±0.23 0.84±0.26 -0.09±0.33 -1.27 (.218)
Cholesterol (mg) 265.03±180.40 310.33±146.23 -45.30±244.60 -0.87 (.395)
K (mg) 1,633.17±484.75 1,824.91±512.85 -191.70±595.00 -1.51 (.146)
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