{"id":"W4415445215","doi":"10.1007/s10865-025-00611-9","title":"Are technologies designed to support physical activity really helping young adults be active? A four-year longitudinal study","year":2025,"lang":"en","type":"article","venue":"Journal of Behavioral Medicine","topic":"Physical Activity and Health","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":false,"ca_institutions":"Dalhousie University; Vitalité Health Network; Université de Moncton; Université de Sherbrooke; University of New Brunswick","funders":"Social Sciences and Humanities Research Council","keywords":"Health psychology; Longitudinal study; Physical activity; Young adult; Public health; Longitudinal data","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0005149656,0.0003090817,0.001498985,0.000590723,0.0001625202,0.00001747855,0.0002816812,0.0001384073,0.00002794658],"category_scores_gemma":[0.0004958401,0.0002230642,0.0002029739,0.0008218081,0.0001909256,0.0003200099,0.0001413936,0.00117045,0.000005957253],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004290987,"about_ca_system_score_gemma":0.000342551,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0003108047,"about_ca_topic_score_gemma":0.0002457394,"domain_scores_codex":[0.9975914,0.000114999,0.0005246893,0.0003730291,0.0009367506,0.0004591497],"domain_scores_gemma":[0.9978908,0.0001714936,0.0006634658,0.0003852641,0.0005638067,0.000325215],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.02706519,0.03590259,0.5750299,0.0006161068,0.0005978938,0.005276497,0.007560892,0.000005139479,0.1002562,0.0001356996,0.00689221,0.2406618],"study_design_scores_gemma":[0.00697101,0.02772962,0.9402188,0.002012001,0.001074175,0.0002536841,0.01360501,0.00001372744,0.007602775,0.000147974,0.0001507779,0.0002204633],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9846208,0.00002097999,0.000553084,0.01325332,0.0003491381,0.0008830132,0.000008844532,0.00009506838,0.0002157684],"genre_scores_gemma":[0.998753,0.00001979207,0.0003421619,0.0002205567,0.0004808712,0.00002556884,0.000001529005,0.00002237772,0.0001341572],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.365189,"threshold_uncertainty_score":0.9096293,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.1340984837949963,"score_gpt":0.425692922249305,"score_spread":0.2915944384543087,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}