Journal: Journal of Sleep Research

Article Title: Evaluation of the Agreement Between Research‐Grade Actigraphy Sleep, Consumer‐Grade Smartwatches and Self‐Reported Sleep Diaries in Masters Endurance Athletes

doi: 10.1111/jsr.70177

Figure Lengend Snippet: Method comparison of total sleep time evaluated using Bland–Altman plots for data from ActiGraph (ACTI), smartwatch (SMART), and self‐reported (SELF) data in male and female masters endurance athletes. * p < 0.05 for the linear regression analysis indicating the presence of proportional bias.

Article Snippet: When examining whether the model tier (high‐end, mid‐range, or low‐end) of Garmin smartwatch influenced agreement between ACTI and SELF, there were no significant differences in TST or SE% values across tiers when compared to ACTI (Table ).

Techniques: Comparison

Journal: Journal of Sleep Research

Article Title: Evaluation of the Agreement Between Research‐Grade Actigraphy Sleep, Consumer‐Grade Smartwatches and Self‐Reported Sleep Diaries in Masters Endurance Athletes

doi: 10.1111/jsr.70177

Figure Lengend Snippet: Agreement analysis of sleep efficiency (SE%) evaluated using Bland–Altman plots for data from ActiGraph (ACTI), smartwatch (SMART), and self‐reported (SELF) data in male and female masters endurance athletes. * p < 0.05 for the linear regression analysis indicating the presence of proportional bias.

Article Snippet: When examining whether the model tier (high‐end, mid‐range, or low‐end) of Garmin smartwatch influenced agreement between ACTI and SELF, there were no significant differences in TST or SE% values across tiers when compared to ACTI (Table ).

Techniques:

Journal: Frontiers in Physiology

Article Title: Validity of smartwatch-derived estimates of lactate threshold heart rate and pace compared to graded exercise testing

doi: 10.3389/fphys.2025.1621996

Figure Lengend Snippet: Distribution analysis of participant age (A1–C1) , LT HR (A2–C2) , and LT Pace (A3–C3) in the tests of different smartwatches. (A1–A3) represent data from Huawei watches, (B1–B3) from Garmin watches, and (C1–C3) from COROS watches. Each plot displays histogram distributions for test success (blue) and test failure (red), with overlaid density curves and count annotations for each bin.

Article Snippet: This study evaluates the validity of three mainstream smartwatches (Huawei GT Runner®, Garmin Forerunner 265® or 265s®, and Coros Pace3®) in estimating lactate threshold heart rate (LT HR) and pace (LT Pace), comparing these to measurement protocols and results from the modified Dmax method in laboratory standards.

Techniques:

Journal: Frontiers in Physiology

Article Title: Validity of smartwatch-derived estimates of lactate threshold heart rate and pace compared to graded exercise testing

doi: 10.3389/fphys.2025.1621996

Figure Lengend Snippet: Regression analysis comparing LT HR (A1–C1) and LT Pace (A2–C2) measured by smartwatches with those calculated using the DmaxMod method. (A1,A2) represent data from Huawei watches, (B1,B2) from Garmin watches, and (C1,C2) from COROS watches. Each plot includes the fitted regression line, 95% confidence interval (dark red band), and 95% prediction band (light red band), with green dots representing individual data points.

Article Snippet: This study evaluates the validity of three mainstream smartwatches (Huawei GT Runner®, Garmin Forerunner 265® or 265s®, and Coros Pace3®) in estimating lactate threshold heart rate (LT HR) and pace (LT Pace), comparing these to measurement protocols and results from the modified Dmax method in laboratory standards.

Techniques: