• 한국보육지원학회지
• /
• 제18권6호
• /
• pp.75-99
• /
• 2022

Objective: This study aims to explore ways to empirically analyze and manage childcare teachers' job stress based on their relationship with stress-related physiological indicators measured by a fitness tracker. Methods: The study participants were 27 childcare teachers in Gyeonggi-do and wore Garmin's wearable fitness tracker Vivosmart 4 for 15 days for three months. The collected information was analyzed for mean, SD, ANOVA, and correlation using JAMOVI 2.00. Results: First, among the daily changes of physiological indicators measured by a fitness tracker, the data collected on Mondays were significant. On Mondays, the stress index was high, the duration of the rest period was short, and the sleep time was short. The stress of childcare teachers showed a significant negative relationship with the body battery which was calculated by considering the duration of the rest period, heart rate variability, stress, and activity level. Also, the duration of deep sleep was positively correlated with a low degree of stress. There was a significant relationship between the childcare teachers' psychological indicators and the biomarkers measured by fitness trackers. Conclusion/Implications: Stress research using a fitness tracker is big data, and in-depth analysis is possible. Fitness trackers can collect and utilize repeated measurement data for each individual childcare teacher.

• 인터넷정보학회논문지
• /
• 제16권5호
• /
• pp.93-98
• /
• 2015

최근 들어서 정보통신기술 자체뿐만 사물인터넷(IoT)을 활용한 비즈니스가 빠르게 확대되고 있다. 일반적으로 사물인터넷 중에서 웨어러블 디바이스는 고객을 대상으로 활용된 분야 중 가장 선도적인 적용분야로 인식되고 있다. 본 연구는 먼저 웨어러블 디바이스의 대표적 응용분야인 활동량 측정기에 대해서 고객의 니즈를 파악하고, 이를 잘 알려진 마케팅 믹스(제품, 가격, 유통, 촉진)와 연계시킨다. 이를 위해서 대학생들을 대상으로 서베이가 수행되었으며, 활동량 측정기의 현재 및 잠재된 니즈를 밝혔다. 또한 이러한 니즈는 마케팅 믹스에 의해서 분류되었다. 활동량 측정기는 다른 정보통신기기와는 달리 잠재된 욕구가 많았으며, 의료기기적 특성으로 인해 유통채널 등도 온라인, 대리점이 아닌 신뢰성을 보장할 직영점이나 오프라인 매장의 선호도가 크다. 본 연구결과는 일반 사물인터넷으로서 활동량 측정기뿐 아니라 웨어러블 디바이스를 개발하려는 개발자와 경영층에게 디자인요소에 관한 새로운 시사점을 제공할 것이다.

• International Journal of Advanced Culture Technology
• /
• 제8권1호
• /
• pp.218-225
• /
• 2020

Purpose Wearable devices are widely used in our daily life. The purpose of this study is to investigate the relationship between persuasive designs of fitness trackers and users' physical activity behavior. Methods To test the research model, data was collected from a web-based survey in China, resulting in an effective sample of 166 usable questionnaires. The survey was restricted only to respondents who wear a fitness tracker. Results The sample surveyed in this study indicated that half of the respondents had been wearing a smart fitness tracker shorter than one year, and only 27% were long-time users (longer than two years). Dialogue support and social support strategies were both proved to be effective in increasing users' workout behavior intention. Social support strategies had a greater effect on behavior change than dialogue support strategies. Conclusion The findings from this study make several contributions to the practice. Wearable devices developers can employ the result from this study to help them design devices, which can persuade people to do more exercises and preserve a healthier life.

• 지역사회간호학회지
• /
• 제30권3호
• /
• pp.257-270
• /
• 2019

Purpose: This study is designed as a non-equivalent, control group pre/post-test for identifying effectiveness of a workplace walking program using a fitness tracker including individual counseling and tailored text messaging. Methods: Seventy-nine employees from two large companies were allocated into an intervention group (n=39) and a control group (n=40). Participants were asked to wear a fitness tracker (Fitbit Charger HR) during 24-hour, 5-days per week, for 10 weeks. The intervention group was provided with daily walking steps measured by Fitbit, weekly counseling with a specifically designed workbook, and seven weekly text messaging, and the control group with the fitness tracker only. Results: At the week 10 measurement, there were significant differences between the intervention and control groups in physical activity self-efficacy (p<.001), physical activity behavior (p<.001), daily walking steps (p<.001), systolic blood pressure (p=.033), and wellness (p<.001). Conclusion: These results suggest that the workplace walking program using a fitness tracker including individual counseling and tailored text messaging is more effective for persons with 10,000 steps/day. Therefore, it is recommended to actively apply this workplace walking program to inactive employees for encouraging regular physical activities and improving their wellness.

• International Journal of Computer Science & Network Security
• /
• 제22권6호
• /
• pp.57-62
• /
• 2022

The recent past has seen a tremendous amount of advancement in the field of Internet of Things (IoT), allowing the influx of a variety of devices into the market. IoT devices are present in almost every aspect of our daily lives. While this increase in usage has many advantages, it also comes with many problems, including and not limited to, the problem of security. There is a need for better measures to be put in place to ensure that the users' data is protected. In particular, fitness trackers used by a vast number of people, transmit important data regarding the health and location of the user. This data is transmitted from the fitness device to the phone and from the phone onto a cloud server. The transmission from device to phone is done over Bluetooth and the latest version of Bluetooth Light Energy (BLE) is fairly advanced in terms of security, it is susceptible to attacks such as Man-in-the-Middle attack and Denial of Service attack. Additionally, the data must be stored in an encrypted form on the cloud server; however, this proves to be a problem when the data must be decrypted to use for running computations. In order to ensure protection of data, measures such as end-to-end encryption may be used. Homomorphic encryption is a class of encryption schemes that allow computations on encrypted data. This paper explores the application of homomorphic encryption for fitness trackers.

• 융합보안논문지
• /
• 제16권4호
• /
• pp.63-68
• /
• 2016

본 연구에서는 현재 상용화되고 있는 피트니스 IT의 현황을 살펴보고, 이를 통해 피트니스 IT 전망과 활성화를 위한 방안을 제시하고자 하였다. 최근의 웨어러블 스마트 시장은 스마트워치 시장과 피트니스 트래커 시장으로 재편되고 있다. 피트니스 IT 기술의 대표적인 단말기인 피트니스 트래커는 시계, 밴드, 의류, 안경, 렌즈 등의 다양한 형태로 출시 및 연구개발 되고 있지만, 현재까지는 시계나 밴드형태의 제품이 가장 많으며, 클립형태, 목걸이, 머리끈 등의 방식으로도 출시되고 있다. 또한 모바일 플랫폼 시장의 양대 축으로 불리 우는 애플과 구글도 피트니스 사업 선점을 위한 건강관련 플랫폼을 제공하고 있다. 피트니스 IT의 전망은 피트니스 관련 웨어러블 기기가 소형화, 경량화 되는 추세로 볼 때 지속적인 성장세를 보이고 있다. 지속적 성장과 활성화를 위해서는 피트니스 IT 디바이스와 다양한 앱, 서비스들이 결합되는 매쉬업(mash-up), 사용자 환경의 편리성 확보, 그리고 디자인 요소와 가격의 합리성이 위한 노력이 필요할 것으로 예측된다.

• International Journal of Knowledge Content Development & Technology
• /
• 제12권1호
• /
• pp.7-16
• /
• 2022

With the proliferation of activity-tracking devices and other smart tools, more users leverage these personal informatics technologies to track their physical and fitness-related activities. The research on the benefits (and limitations) of these devices tends to focus on the use of a single tool, leaving out the interactions among multiple technologies, and how these interactions influence the way users perceive their affordances. Building from an ecological perspective, I extend this research by providing insight into the competitive and complementary relationships among activity tracking devices and other fitness-related and personal informatics technologies within the device ecology of technologies around the user. The affordances of these devices are therefore not enacted in isolation but are relational to understanding of other technological options and differing personal preferences and goals of the user.

• 한국정보시스템학회지:정보시스템연구
• /
• 제29권1호
• /
• pp.201-224
• /
• 2020

Purpose The study focuses on the physical activity behavior change effect of smart wristband, which is the most popular type of fitness tracker nowadays. The purpose of the research is to investigate how people's workout behavior may change after wearing a smart band and examine what kind of role persuasive design plays in behavior change. Design/Methodology/Approach This research employed an experimental study to examine whether the user's workout behaviors changed after using wristband from the "Behavior Wizard" perspective. A representative smart wristband from a major vendor was selected as the objects of experimental study. In the experiment, by comparing users' workout behavior before and after using the wristband, behavior changes of all the experiment participants were classified into one of the 15 behavior change types. Users perceived persuasive design characteristics were measured and group differences were tested among different behavior change groups. Findings This research found that nearly half of the participants changed their workout behavior while half retained their workout status or no exercise status. Half of the participants who did not do exercise in their spare time started walking in the experiment. Results also showed that participants who started working out perceived higher levels of persuasive design devised into the smart band than participants who preserved no exercise status, except for facilitation and reward strategies. Participants who retained workout and those who increased workout frequency perceived no difference in smart band persuasive design.

• 한국HCI학회논문지
• /
• 제11권3호
• /
• pp.23-30
• /
• 2016

현재 피트니스 트래커(fitness tracker)시장은 유산소 운동에만 초점을 맞춰 근력 운동 분야는 상대적으로 소외되어 있다. 최근 근력 운동 피트니스 트래커가 소수 출시되고 있으나, 운동 상황에 대한 고려가 부족하여 사람-기기 간 인터랙션에 불편함을 초래한다. 특히, 운동 중에는 신체의 움직임이 활발하므로, 손으로 기기를 휴대하거나 기기를 조작하는 상황은 사용자에게 부정적 경험을 유발한다. 웨어러블 디바이스는 항시적인 착용이 가능하므로, 손과 발의 사용이 자유로워 운동 중 피드백 제공에 효과적이다. 따라서, 이 연구에서는 웨어러블 디바이스를 통해 피드백을 감각하게 함으로써, 운동 수행자가 효과적인 운동을 할 수 있도록 하는 것을 목적으로 한다. 이 연구에서는 다음 세 가지 연구 문제를 검증하였다. 1) 운동 상황에서 필요한 정보는 무엇인가? 2) 근력 운동 중, 어떤 감각 피드백이 선호되는가? 3) 근력 운동 중, 감각 피드백의 가치는 무엇인가? 그 결과, 첫째, 운동 수행자는 운동 단계 중, '운동 중'에 해당하는 정보가 가장 필요하다고 하였으며 '페이스 조절(횟수 카운팅, 동기 부여)'과 '자세 지도(문제점 진단, 자세 교정)'에 해당하는 정보를 가장 필요로 하였다. 둘째, 운동 중 선호되는 감각 피드백에 대해서는 청각 피드백, 촉각 피드백, 시각 피드백 순으로 만족도가 높았으며, 운동 강도가 높을수록 감각 피드백에 대한 만족도가 더 높았다. 셋째, 감각 피드백과 기기 피드백의 가치에 대해 비교한 결과, 기기 피드백과 사람이 제공하는 피드백에 대한 만족도, 유용성, 효용성이 비슷하게 나타났다. 결론적으로, 이 연구에서는 근력 운동 중, 웨어러블 디바이스를 활용한 감각 피드백의 디자인 가이드라인을 도출하였으며, 웨어러블 디바이스의 감각 피드백이 사람이 제공하는 피드백을 대체할 수 있다는 가능성을 확인하였다.