{"id":2297,"date":"2026-08-26T12:06:37","date_gmt":"2026-08-26T11:06:37","guid":{"rendered":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/?p=2297"},"modified":"2026-08-26T12:06:37","modified_gmt":"2026-08-26T11:06:37","slug":"exploring-the-relationship-between-step-count-and-the-risk-of-atrial-fibrillation","status":"publish","type":"post","link":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/2026\/08\/26\/exploring-the-relationship-between-step-count-and-the-risk-of-atrial-fibrillation\/","title":{"rendered":"Exploring the relationship between step count and the risk of atrial fibrillation"},"content":{"rendered":"<p>[et_pb_section bb_built=&#8221;1&#8243; admin_label=&#8221;section&#8221; fullwidth=&#8221;on&#8221; next_background_color=&#8221;#000000&#8243; global_module=&#8221;322&#8243;][et_pb_fullwidth_menu global_parent=&#8221;322&#8243; _builder_version=&#8221;3.0.106&#8243; menu_id=&#8221;7&#8243; submenu_direction=&#8221;downwards&#8221; fullwidth_menu=&#8221;off&#8221; background_layout=&#8221;dark&#8221; module_class=&#8221;main-navigation&#8221; \/][\/et_pb_section][et_pb_section bb_built=&#8221;1&#8243; fullwidth=&#8221;off&#8221; specialty=&#8221;on&#8221; prev_background_color=&#8221;#000000&#8243; next_background_color=&#8221;#1d1d1d&#8221;][et_pb_column type=&#8221;2_3&#8243; specialty_columns=&#8221;2&#8243;][et_pb_row_inner locked=&#8221;off&#8221;][et_pb_column_inner type=&#8221;4_4&#8243; saved_specialty_column_type=&#8221;2_3&#8243;][et_pb_post_title _builder_version=&#8221;3.17.6&#8243; featured_placement=&#8221;above&#8221; locked=&#8221;on&#8221; parent_locked=&#8221;off&#8221; date_format=&#8221;j M Y&#8221; \/][et_pb_text _builder_version=&#8221;3.17.6&#8243; background_layout=&#8221;light&#8221; parent_locked=&#8221;off&#8221;]<\/p>\n<p>Atrial fibrillation (AF) is the most common cardiac arrhythmia.<\/p>\n<p>There has been research into whether physical activity can help lower AF risk, but many studies use research-grade accelerometers. While these have provided useful insights, they are often only used for a short amount of time, e.g., between 4-7 days. With more people now using wearable devices, researchers can study physical activity patterns over much longer periods and in larger, real-world populations.<\/p>\n<p>This edition of Tap into Research looks at a study that investigated whether daily step counts were linked to AF risk using Apple Watches.<\/p>\n<h2>How were smartwatches used in the study?<\/h2>\n<p>Participants in this study were from the Framingham Heart Study, which began in 1948 and now includes up to 3 generations of families. In 2016, participants who owned an iPhone were offered an Apple Watch to take part in additional monitoring.<\/p>\n<p>Participants were encouraged to wear their Apple Watch daily, which measured their heart rate and step count. Researchers also extracted watch wear time.<\/p>\n<p>Researchers then linked this data to each participant&#8217;s CHARGE-AF score: a validated tool to estimate the risk of someone developing AF in the next 5 years.<\/p>\n<h2>What did the study find?<\/h2>\n<p>The study included 923 participants.<\/p>\n<p>Participants wore their watch for more than 5 hours for a median of 324 days (IQR 137-563). The median daily wear time was 13.6 hours (IQR 12.4-14.7), and the median daily step count was 7,227 (IQR 5,699-8,970).<\/p>\n<p>A higher number of steps was associated with a lower predicted risk of AF. After adjusting for age, sex, and wear time, every 1,000 steps was associated with a 0.08% lower CHARGE-AF risk score.<\/p>\n<p>This relationship between step count and risk of AF was different for men and women, and for participants with and without obesity:<\/p>\n<ul>\n<li>Higher step counts were linked to a bigger reduction in predicted AF risk for men than women (0.14% lower CHARGE-AF score per 1,000 steps in men, compared with 0.05% lower CHARGE-AF score per 1,000 steps for women).<\/li>\n<li>Higher step counts were linked to a bigger reduction in predicted AF risk for participants with obesity than those without (0.10% lower CHARGE-AF score per 1,000 steps, while those without obesity had a 0.03% lower CHARGE-AF score per 1,000 steps).<\/li>\n<\/ul>\n<h2>Why does this matter?<\/h2>\n<p>Understanding how step count relates to AF risk matters because increasing daily step count could be a simple, practical way to lower risk. Future studies could explore this relationship in more diverse groups, including a wider range of ages and ethnic groups, to check whether the patterns found in this study are similar in other populations.<\/p>\n<p>Read the paper: <a href=\"https:\/\/www.jmir.org\/2023\/1\/e43123\">Step Count, Self-reported Physical Activity, and Predicted 5-Year Risk of Atrial Fibrillation: Cross-sectional Analysis<\/a>\u00a0(jmir.org)<\/p>\n<p>[\/et_pb_text][et_pb_post_nav _builder_version=&#8221;3.0.106&#8243; in_same_term=&#8221;off&#8221; show_prev=&#8221;on&#8221; show_next=&#8221;on&#8221; prev_text=&#8221;Previous&#8221; next_text=&#8221;Next&#8221; locked=&#8221;on&#8221; parent_locked=&#8221;off&#8221; \/][et_pb_comments _builder_version=&#8221;3.0.106&#8243; show_avatar=&#8221;on&#8221; show_reply=&#8221;on&#8221; show_count=&#8221;on&#8221; background_layout=&#8221;light&#8221; header_font_size_tablet=&#8221;51&#8243; header_line_height_tablet=&#8221;2&#8243; custom_button=&#8221;on&#8221; button_icon_placement=&#8221;right&#8221; button_text_color=&#8221;#ffffff&#8221; button_use_icon=&#8221;off&#8221; locked=&#8221;on&#8221; parent_locked=&#8221;off&#8221; button_text_size__hover_enabled=&#8221;off&#8221; button_text_size__hover=&#8221;null&#8221; button_one_text_size__hover_enabled=&#8221;off&#8221; button_one_text_size__hover=&#8221;null&#8221; button_two_text_size__hover_enabled=&#8221;off&#8221; button_two_text_size__hover=&#8221;null&#8221; button_text_color__hover_enabled=&#8221;off&#8221; button_text_color__hover=&#8221;null&#8221; button_one_text_color__hover_enabled=&#8221;off&#8221; button_one_text_color__hover=&#8221;null&#8221; button_two_text_color__hover_enabled=&#8221;off&#8221; button_two_text_color__hover=&#8221;null&#8221; button_border_width__hover_enabled=&#8221;off&#8221; button_border_width__hover=&#8221;null&#8221; button_one_border_width__hover_enabled=&#8221;off&#8221; button_one_border_width__hover=&#8221;null&#8221; button_two_border_width__hover_enabled=&#8221;off&#8221; button_two_border_width__hover=&#8221;null&#8221; button_border_color__hover_enabled=&#8221;off&#8221; button_border_color__hover=&#8221;null&#8221; button_one_border_color__hover_enabled=&#8221;off&#8221; button_one_border_color__hover=&#8221;null&#8221; button_two_border_color__hover_enabled=&#8221;off&#8221; button_two_border_color__hover=&#8221;null&#8221; button_border_radius__hover_enabled=&#8221;off&#8221; button_border_radius__hover=&#8221;null&#8221; button_one_border_radius__hover_enabled=&#8221;off&#8221; button_one_border_radius__hover=&#8221;null&#8221; button_two_border_radius__hover_enabled=&#8221;off&#8221; button_two_border_radius__hover=&#8221;null&#8221; button_letter_spacing__hover_enabled=&#8221;off&#8221; button_letter_spacing__hover=&#8221;null&#8221; button_one_letter_spacing__hover_enabled=&#8221;off&#8221; button_one_letter_spacing__hover=&#8221;null&#8221; button_two_letter_spacing__hover_enabled=&#8221;off&#8221; button_two_letter_spacing__hover=&#8221;null&#8221; button_bg_color__hover_enabled=&#8221;off&#8221; button_bg_color__hover=&#8221;null&#8221; button_one_bg_color__hover_enabled=&#8221;off&#8221; button_one_bg_color__hover=&#8221;null&#8221; button_two_bg_color__hover_enabled=&#8221;off&#8221; button_two_bg_color__hover=&#8221;null&#8221; \/][et_pb_text admin_label=&#8221;Related posts&#8221; _builder_version=&#8221;3.0.106&#8243; background_layout=&#8221;light&#8221; locked=&#8221;on&#8221; parent_locked=&#8221;off&#8221;]<\/p>\n<h1>Related<\/h1>\n<!-- relpost-thumb-wrapper --><div class=\"relpost-thumb-wrapper\"><!-- filter-class --><div class=\"relpost-thumb-container\"><h3>Related posts:<\/h3><div style=\"clear: both\"><\/div><div style=\"clear: both\"><\/div><!-- relpost-block-container --><div class=\"relpost-block-container relpost-block-column-layout\" style=\"--relposth-columns: 3;--relposth-columns_t: 2; --relposth-columns_m: 2\"><a href=\"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/2025\/05\/01\/tracking-sleep-tackling-disease-how-sleep-patterns-impact-health\/\"class=\"relpost-block-single\" ><div class=\"relpost-custom-block-single\"><div class=\"relpost-block-single-image rpt-lazyload\" aria-label=\"An illustration of someone holding a phone with the text &#039;Tap Into Research&#039; 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There has been research into whether physical activity can help lower AF risk, but many studies use research-grade accelerometers. While these have provided useful insights, they are often only used for a short amount of time, e.g., between 4-7 days. With more people now using wearable [&hellip;]<\/p>\n","protected":false},"author":7486,"featured_media":2238,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_exactmetrics_skip_tracking":false,"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2297","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tap-into-research"],"_links":{"self":[{"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/posts\/2297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/users\/7486"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/comments?post=2297"}],"version-history":[{"count":2,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/posts\/2297\/revisions"}],"predecessor-version":[{"id":2299,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/posts\/2297\/revisions\/2299"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/media\/2238"}],"wp:attachment":[{"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/media?parent=2297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/categories?post=2297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.manchester.ac.uk\/health-research-from-home\/wp-json\/wp\/v2\/tags?post=2297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}