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November 19, View all comments 0. Emerging economies are catching up. Analyse your app, build better products and user experience. These figures are growing every year, and along with it, the market for mobile apps. In the below report, we have gathered specific data relating to app downloads and usage. These are intended to give us a better idea of just how many apps are being downloaded every year, which of these are most popular, and how they are being used.
We have collected data and statistics on iOS and Android app downloads. Read on below to find out more. A baseline assessment is scheduled for eligible participants within 4 weeks of the screening call. Those aged 16—17 years provide their own written informed consent.
Incentives are not conditional on usage of the app. Moreover, participants will be told both apps will be provided i.
As adherence to the intervention is one of the outcomes of interest, no reinforcement strategies will be used to influence compliance. Assessments are conducted at baseline and 8-week post randomization see Fig. Baseline assessments involve an explanation of study procedures, signed consent and collection of participant-reported secondary outcomes, followed by physical measurements height and weight and a field test of cardiorespiratory fitness.
Participants are then asked to wear an accelerometer for seven consecutive days. Flow diagram of the study. Adverse events are collected at each visit or voluntarily reported by contacting the investigator.
This has assumed a standard deviation of 15 s on the primary outcome, with adjustment for multiple comparisons. An improvement in the completion time of 78 s for this distance corresponds to a shift from the 25 th to the 50 th percentile in terms of cardiorespiratory fitness, which is considered a meaningful impact towards a more favorable cardiovascular profile.
Following the baseline measurement, participants are randomized at a ratio to one of three conditions. The randomization sequence was generated by the study statistician using a computer program in variable blocks 3 and 6 , stratified by sex [ 58 ]. Allocation was concealed in consecutively numbered, opaque sealed envelopes. Given the nature of the intervention, participants are aware of the group to which they have been allocated.
The outcome assessor will not be blinded to the treatment allocation, however, the assessment of cardiorespiratory fitness and physical activity levels utilize objective measures. Participants randomized to the intervention groups receive either a non-immersive or immersive app see description below , which is downloaded on their mobile device by AD. Once installed, participants receive a short instruction on the features and settings of the app and are encouraged to use it three times per week.
No changes will be made to the intervention or study design once recruitment begins, however, participants can choose to stop receiving the intervention and will be informed of this during the consenting process.
The choice for the interventions was based on previous work conducted by the authors, which evaluated the top most downloaded apps of the health and fitness category of the New Zealand iTunes store.
In this study we rated "off-the-shelf" apps for the presence or absence of behavior change techniques [ 46 ]. The two apps selected included self-regulatory behavior change techniques previously shown to be effective in changing physical activity behavior i.
Further, we were interested in comparing an app with an immersive story to an app without story since game-based stories that engage individuals can be used for health behavior change [ 24 , 35 ] to model behaviors by immersing and capturing attention. Likewise, the app consists of an 8-week training program; three workouts a week, each during 35 min approximately, that give detailed instructions via headphones about when to walk, jog, run and stretch.
However, this app combines the training program with an immersing, fun story where the user needs to get fit to escape zombies. Participants randomized to the control group are asked to continue with their usual physical activities for the duration of the study. Both apps are offered to participants once they have completed the study.
Although the duration of the training program of the non-immersive app is 1-week longer than the immersive app, the programs are similar regarding their frequency and duration of sessions.
All participants will be assessed 8-week post randomization. The test is used in the most important fitness test batteries for young people, such as Fitnessgram. The total time i. Participants will complete the test individually, on an outdoor field-track on the University of Auckland campus sport grounds.
Before the test, warm-up includes a walk on the track and a self-selected routine. During the test, participants will be told times as they pass the start line—to assist with pacing—and encouraged with positive feedback. A list of typical encouragement sentences will be used to ensure consistency.
Following the test, participants will be free to walk around to cool-down and invited to stretch their leg muscles. Anthropometrics body mass index are measured using standardized practices [ 66 ]. Bodyweight is measured to the nearest 0. Physical measurements are taken as the average of two readings.
Self-reported physical activity is assessed using the Physical Activity Questionnaire for Adolescents PAQ-A , a validated self-report seven day recall measure with good internal consistency Cronbach alphas range from 0.
The PAQ-A items assess physical activity at school i. Each statement is scored on a five-point scale with higher scores indicating higher activity levels. The final PAQ-A score is an average of eight items [ 68 ]. Participants are asked to wear the Actigraph following each assessment for seven consecutive days. They are instructed to wear the monitor during waking hours on their mid-axilla line right hip, removing it when engaging in activities involving water e.
Participants are asked to complete a daily log detailing the time the Actigraph was put on and removed. The GT1M model was initialized to collect data in s epochs [ 70 ]. The ActiLife software version 5 [ 71 ] is used to initialize the accelerometers and download the data following wearing periods.
All accelerometer data files are exported individually as a. During subsequent processing, data are aggregated into minute intervals. To determine valid wear time, periods of more than 60 min of consecutive zeroes and days with less than min of valid records are removed before data analysis [ 72 ].
All participants with at least 3 days of valid data will be included in the analysis [ 73 ]. The average daily time spent in sedentary, light, moderate, vigorous and moderate to vigorous activities is calculated for each participant. Participants rate their agreement with 16 statements on a five-point Likert type scale e. Factorial validity and gender invariance among older adolescents has been previously demonstrated [ 78 ].
Scores are summed with higher scores indicating higher level of enjoyment. Participants rate their agreement with 18 items on a six-point Likert type scale e. Six items are referenced to each of the three domains. This eight item questionnaire has well-established validity [ 81 ]. Items are scored from on a 3-point Likert-type scale e. Self-reported frequency of app utilization e. Will you continue to use the app? A series of open-ended questions are asked to determine the features participants considered most and least acceptable, as well as the ones they used most often to support their physical activity.
Objective data on app usage i. Treatment evaluation will be performed on the principle of intention to treat. Statistical analyses will be conducted using SAS version 9. Apart from accelerometry, study data will be keyed into an Excel database using data forms enabled with validation criteria. All data will be imported into SAS for final analysis. Baseline characteristics of all randomized participants will be presented for each group using descriptive statistics.
Continuous variables will be reported as numbers of observed and missing values, mean, standard deviation, median and range. Categorical variables will be described as frequencies and percentages. Analysis of covariance ANCOVA regression model will be used to evaluate the main treatment effects on the primary outcome, adjusting for its baseline measure, sex, and important baseline confounding factors.
Normality of the continuous outcome data will be tested, and the goodness of model fit will be evaluated. Model-adjusted means will be estimated for each group, and their differences will be tested. A similar approach will be used for other continuous secondary outcomes. Generalized linear models will be applied to categorical outcomes as appropriate.
Psychosocial variables i. The recommendations of Kraemer for testing mediators of intervention effects in randomized clinical trials will be followed [ 83 ].
Data permitting, further analyses will evaluate the treatment effects on a subgroup of participants who report having adhered to the intervention. The AIMFIT study aims to investigate the effectiveness of two commercially available smartphone applications to improve fitness and activity levels in young people. Want to listen to music during your journey? Yup, app for that too. These days, your options are virtually endless. No matter what your lifestyle, one of these fitness apps will hit the sweet spot and help you get on track to living a healthier life.
Sometimes, all you need to get going is a little motivation. Charity Miles makes that easy by rewarding you for every mile you run. They reward your favorite charity, which is arguably even better. The money comes from their corporate sponsors so you can do your morning run while encouraging companies to donate to charity. This app runs on iPhones, as well as on any Android phone with a motion sensor. You can download it here. You start by telling it a few simple facts, like your height, weight, and your personal fitness goals.
It also builds daily meals which are based on recipes from trained nutritionists. You can download 8Fit here. This app will let you know. It also tracks your heart rate over time so you can see how well your body is adjusting to your current workout regime. This app works on all platforms — iPhone, Android, and Windows Mobile. You can download Instant Heart Rate here. Instead, it helps you find fitness classes and special sessions in your area. You only pay a small fee when you actually use it.
If you sign up one of your gym buddies, you both get a free credit. Esquared is available for both iPhone and Android. MyFitnessPal may be the answer to your problems. When you eat, you enter your meal into the app, and it tells you how many calories you have remaining for the day.
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