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  • 1
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    Obstructive Sleep Apnea, Glucose Tolerance, and β-Cell Function in Adults With Prediabetes or Untreated Type 2 Diabetes in the Restoring Insulin Secretion (RISE) Study
    American Diabetes Association ; 2021
    In:  Diabetes Care Vol. 44, No. 4 ( 2021-04-01), p. 993-1001
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 44, No. 4 ( 2021-04-01), p. 993-1001
    Abstract: Obstructive sleep apnea (OSA) is associated with insulin resistance and has been described as a risk factor for type 2 diabetes. Whether OSA adversely impacts pancreatic islet β-cell function remains unclear. We aimed to investigate the association of OSA and short sleep duration with β-cell function in overweight/obese adults with prediabetes or recently diagnosed, treatment-naive type 2 diabetes. RESEARCH DESIGN AND METHODS Two hundred twenty-one adults (57.5% men, age 54.5 ± 8.7 years, BMI 35.1 ± 5.5 kg/m2) completed 1 week of wrist actigraphy and 1 night of polysomnography before undergoing a 3-h oral glucose tolerance test (OGTT) and a two-step hyperglycemic clamp. Associations of measures of OSA and actigraphy-derived sleep duration with HbA1c, OGTT-derived outcomes, and clamp-derived outcomes were evaluated with adjusted regression models. RESULTS Mean ± SD objective sleep duration by actigraphy was 6.6 ± 1.0 h/night. OSA, defined as an apnea-hypopnea index (AHI) of five or more events per hour, was present in 89% of the participants (20% mild, 28% moderate, 41% severe). Higher AHI was associated with higher HbA1c (P = 0.007). However, OSA severity, measured either by AHI as a continuous variable or by categories of OSA severity, and sleep duration (continuous or & lt;6 vs. ≥6 h) were not associated with fasting glucose, 2-h glucose, insulin sensitivity, or β-cell responses. CONCLUSIONS In this baseline cross-sectional analysis of the RISE clinical trial of adults with prediabetes or recently diagnosed, untreated type 2 diabetes, the prevalence of OSA was high. Although some measures of OSA severity were associated with HbA1c, OSA severity and sleep duration were not associated with measures of insulin sensitivity or β-cell responses.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc20-2127
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
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  • 2
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    Association of Baseline Characteristics With Insulin Sensitivity and β-Cell Function in the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness (GRADE) Study Cohort
    American Diabetes Association ; 2021
    In:  Diabetes Care Vol. 44, No. 2 ( 2021-02-01), p. 340-349
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 44, No. 2 ( 2021-02-01), p. 340-349
    Abstract: We investigated sex and racial differences in insulin sensitivity, β-cell function, and glycated hemoglobin (HbA1c) and the associations with selected phenotypic characteristics. RESEARCH DESIGN AND METHODS This is a cross-sectional analysis of baseline data from 3,108 GRADE (Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study) participants. All had type 2 diabetes diagnosed & lt;10 years earlier and were on metformin monotherapy. Insulin sensitivity and β-cell function were evaluated using the HOMA of insulin sensitivity and estimates from oral glucose tolerance tests, including the Matsuda Index, insulinogenic index, C-peptide index, and oral disposition index (DI). RESULTS The cohort was 56.6 ± 10 years of age (mean ± SD), 63.8% male, with BMI 34.2 ± 6.7 kg/m2, HbA1c 7.5 ± 0.5%, and type 2 diabetes duration 4.0 ± 2.8 years. Women had higher DI than men but similar insulin sensitivity. DI was the highest in Black/African Americans, followed by American Indians/Alaska Natives, Asians, and Whites in descending order. Compared with Whites, American Indians/Alaska Natives had significantly higher HbA1c, but Black/African Americans and Asians had lower HbA1c. However, when adjusted for glucose levels, Black/African Americans had higher HbA1c than Whites. Insulin sensitivity correlated inversely with BMI, waist-to-hip ratio, triglyceride-to-HDL-cholesterol ratio (TG/HDL-C), and the presence of metabolic syndrome, whereas DI was associated directly with age and inversely with BMI, HbA1c, and TG/HDL-C. CONCLUSIONS In the GRADE cohort, β-cell function differed by sex and race and was associated with the concurrent level of HbA1c. HbA1c also differed among the races, but not by sex. Age, BMI, and TG/HDL-C were associated with multiple measures of β-cell function and insulin sensitivity.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc20-1787
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
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  • 3
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    Hyperglucagonemia Does Not Explain the β-Cell Hyperresponsiveness and Insulin Resistance in Dysglycemic Youth Compared With Adults: Lessons From the RISE Study
    American Diabetes Association ; 2021
    In:  Diabetes Care Vol. 44, No. 9 ( 2021-09-01), p. 1961-1969
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 44, No. 9 ( 2021-09-01), p. 1961-1969
    Abstract: To determine whether β-cell hyperresponsiveness and insulin resistance in youth versus adults in the Restoring Insulin Secretion (RISE) Study are related to increased glucagon release. RESEARCH DESIGN AND METHODS In 66 youth and 350 adults with impaired glucose tolerance (IGT) or recently diagnosed type 2 diabetes (drug naive), we performed hyperglycemic clamps and oral glucose tolerance tests (OGTTs). From clamps we quantified insulin sensitivity (M/I), plasma fasting glucagon and C-peptide, steady-state glucagon and C-peptide at glucose of 11.1 mmol/L, and arginine-stimulated glucagon (acute glucagon response [AGR]) and C-peptide (ACPRmax) responses at glucose & gt;25 mmol/L. RESULTS Mean ± SD fasting glucagon (7.63 ± 3.47 vs. 8.55 ± 4.47 pmol/L; P = 0.063) and steady-state glucagon (2.24 ± 1.46 vs. 2.49 ± 1.96 pmol/L, P = 0.234) were not different in youth and adults, respectively, while AGR was lower in youth (14.1 ± 5.2 vs. 16.8 ± 8.8 pmol/L, P = 0.001). Significant age-group differences in insulin sensitivity, fasting C-peptide, steady-state C-peptide, and ACPRmax were not related to glucagon. Fasting glucose and glucagon were positively correlated in adults (r = 0.133, P = 0.012) and negatively correlated in youth (r = −0.143, P = 0.251). In both age-groups, higher fasting glucagon was associated with higher fasting C-peptide (youth r = 0.209, P = 0.091; adults r = 0.335, P & lt; 0.001) and lower insulin sensitivity (youth r = −0.228, P = 0.066; adults r = −0.324, P & lt; 0.001). With comparable fasting glucagon, youth had greater C-peptide and lower insulin sensitivity. OGTT suppression of glucagon was greater in youth. CONCLUSIONS Youth with IGT or recently diagnosed type 2 diabetes (drug naive) have hyperresponsive β-cells and lower insulin sensitivity, but their glucagon concentrations are not increased compared with those in adults. Thus, α-cell dysfunction does not appear to explain the difference in β-cell function and insulin sensitivity in youth versus adults.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc21-0460
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
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  • 4
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    Baseline Predictors of Glycemic Worsening in Youth and Adults With Impaired Glucose Tolerance or Recently Diagnosed Type 2 Diabetes in the Restoring Insulin Secretion (RISE) Study
    American Diabetes Association ; 2021
    In:  Diabetes Care Vol. 44, No. 9 ( 2021-09-01), p. 1938-1947
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 44, No. 9 ( 2021-09-01), p. 1938-1947
    Abstract: To identify predictors of glycemic worsening among youth and adults with impaired glucose tolerance (IGT) or recently diagnosed type 2 diabetes in the Restoring Insulin Secretion (RISE) Study. RESEARCH DESIGN AND METHODS A total of 91 youth (10–19 years) were randomized 1:1 to 12 months of metformin (MET) or 3 months of glargine, followed by 9 months of metformin (G-MET), and 267 adults were randomized to MET, G-MET, liraglutide plus MET (LIRA+MET), or placebo for 12 months. All participants underwent a baseline hyperglycemic clamp and a 3-h oral glucose tolerance test (OGTT) at baseline, month 6, month 12, and off treatment at month 15 and month 21. Cox models identified baseline predictors of glycemic worsening (HbA1c increase ≥0.5% from baseline). RESULTS Glycemic worsening occurred in 17.8% of youth versus 7.5% of adults at month 12 (P = 0.008) and in 36% of youth versus 20% of adults at month 21 (P = 0.002). In youth, glycemic worsening did not differ by treatment. In adults, month 12 glycemic worsening was less on LIRA+MET versus placebo (hazard ratio 0.21, 95% CI 0.05–0.96, P = 0.044). In both age-groups, lower baseline clamp-derived β-cell responses predicted month 12 and month 21 glycemic worsening (P & lt; 0.01). Lower baseline OGTT-derived β-cell responses predicted month 21 worsening (P & lt; 0.05). In youth, higher baseline HbA1c and 2-h glucose predicted month 12 and month 21 glycemic worsening, and higher fasting glucose predicted month 21 worsening (P & lt; 0.05). In adults, lower clamp- and OGTT-derived insulin sensitivity predicted month 12 and month 21 worsening (P & lt; 0.05). CONCLUSIONS Glycemic worsening was more common among youth than adults with IGT or recently diagnosed type 2 diabetes, predicted by lower baseline β-cell responses in both groups, hyperglycemia in youth, and insulin resistance in adults.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc21-0027
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
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  • 5
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    Effect of Medical and Surgical Interventions on α-Cell Function in Dysglycemic Youth and Adults in the RISE Study
    American Diabetes Association ; 2021
    In:  Diabetes Care Vol. 44, No. 9 ( 2021-09-01), p. 1948-1960
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 44, No. 9 ( 2021-09-01), p. 1948-1960
    Abstract: To compare effects of medications and laparoscopic gastric band surgery (LB) on α-cell function in dysglycemic youth and adults in the Restoring Insulin Secretion (RISE) Study protocols. RESEARCH DESIGN AND METHODS Glucagon was measured in three randomized, parallel, clinical studies: 1) 91 youth studied at baseline, after 12 months on metformin alone (MET) or glargine followed by metformin (G/M), and 3 months after treatment withdrawal; 2) 267 adults studied at the same time points and treated with MET, G/M, or liraglutide plus metformin (L+M) or given placebo (PLAC); and 3) 88 adults studied at baseline and after 12 and 24 months of LB or MET. Fasting glucagon, glucagon suppression by glucose, and acute glucagon response (AGR) to arginine were assessed during hyperglycemic clamps. Glucagon suppression was also measured during oral glucose tolerance tests (OGTTs). RESULTS No change in fasting glucagon, steady-state glucagon, or AGR was seen at 12 months following treatment with MET or G/M (in youth and adults) or PLAC (in adults). In contrast, L+M reduced these measures at 12 months (all P ≤ 0.005), which was maintained 3 months after treatment withdrawal (all P & lt; 0.01). LB in adults also reduced fasting glucagon, steady-state glucagon, and AGR at 12 and 24 months (P & lt; 0.05 for all, except AGR at 12 months [P = 0.098]). Similarly, glucagon suppression during OGTTs was greater with L+M and LB. Linear models demonstrated that treatment effects on glucagon with L+M and LB were largely associated with weight loss. CONCLUSIONS Glucagon concentrations were reduced by L+M and LB in adults with dysglycemia, an effect principally attributable to weight loss in both interventions.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc21-0461
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
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  • 6
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    Association of Self-Reported Sleep and Circadian Measures With Glycemia in Adults With Prediabetes or Recently Diagnosed Untreated Type 2 Diabetes
    American Diabetes Association ; 2019
    In:  Diabetes Care Vol. 42, No. 7 ( 2019-07-01), p. 1326-1332
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 42, No. 7 ( 2019-07-01), p. 1326-1332
    Abstract: Sleep disturbances and circadian misalignment (social jet lag, late chronotype, or shift work) have been associated with worse glycemic control in type 2 diabetes (T2D). Whether these findings apply to adults with prediabetes is yet unexplored. We hypothesized that self-reported short sleep, poor sleep quality, and/or circadian misalignment are associated with higher glycemia, BMI, and blood pressure (BP) in adults with prediabetes or recently diagnosed, untreated T2D. RESEARCH DESIGN AND METHODS Our cohort included 962 overweight/obese adults ages 20–65 years with prediabetes or recently diagnosed, untreated T2D who completed a 2-h oral glucose tolerance test and validated sleep questionnaires. Independent associations of sleep and circadian variables with glycemia, BMI, and BP were evaluated with regression models. RESULTS The multiethnic cohort was 55% men, with mean ± SD age 52.2 ± 9.5 years and BMI 34.7 ± 5.5 kg/m2. Mean sleep duration was 6.6 ± 1.3 h. Poor sleep quality was reported by 54% and high risk for obstructive sleep apnea by 64%. HbA1c was significantly higher in those reporting & lt;5 or & gt;8 h sleep per night. Sleep duration & gt;8 h was also associated with higher fasting glucose and & lt;6 h with higher BMI. Shift work was also associated with higher BMI. Social jet lag and delayed chronotype were associated with higher BP. CONCLUSIONS In our cohort, self-reported short and long sleep were both associated with adverse measures of glycemia, and short sleep and shift work were associated with higher BMI. Further research using objective measures of sleep is needed to better delineate the relationship between sleep and glycemia in adults with prediabetes or T2D.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc19-0298
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2019
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  • 7
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    OGTT Glucose Response Curves, Insulin Sensitivity, and β-Cell Function in RISE: Comparison Between Youth and Adults at Randomization and in Response to Interventions to Preserve β-Cell Function
    American Diabetes Association ; 2021
    In:  Diabetes Care Vol. 44, No. 3 ( 2021-03-01), p. 817-825
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 44, No. 3 ( 2021-03-01), p. 817-825
    Abstract: We examined the glucose response curves (biphasic [BPh], monophasic [MPh] , incessant increase [IIn]) during an oral glucose tolerance test (OGTT) and their relationship to insulin sensitivity (IS) and β-cell function (βCF) in youth versus adults with impaired glucose tolerance or recently diagnosed type 2 diabetes. RESEARCH DESIGN AND METHODS This was both a cross-sectional and a longitudinal evaluation of participants in the RISE study randomized to metformin alone for 12 months or glargine for 3 months followed by metformin for 9 months. At baseline/randomization, OGTTs (85 youth, 353 adults) were categorized as BPh, MPh, or IIn. The relationship of the glucose response curves to hyperglycemic clamp–measured IS and βCF at baseline and the change in glucose response curves 12 months after randomization were assessed. RESULTS At randomization, the prevalence of the BPh curve was significantly higher in youth than adults (18.8% vs. 8.2%), with no differences in MPh or IIn. IS did not differ across glucose response curves in youth or adults. However, irrespective of curve type, youth had lower IS than adults (P & lt; 0.05). βCF was lowest in IIn versus MPh and BPh in youth and adults (P & lt; 0.05), yet compared with adults, youth had higher βCF in BPh and MPh (P & lt; 0.005) but not IIn. At month 12, the change in glucose response curves did not differ between youth and adults, and there was no treatment effect. CONCLUSIONS Despite a twofold higher prevalence of the more favorable BPh curve in youth at randomization, RISE interventions did not result in beneficial changes in glucose response curves in youth compared with adults. Moreover, the typical β-cell hypersecretion in youth was not present in the IIn curve, emphasizing the severity of β-cell dysfunction in youth with this least favorable glucose response curve.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc20-2134
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
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  • 8
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    Islet Autoimmunity Is Highly Prevalent and Associated With Diminished β-Cell Function in Patients With Type 2 Diabetes in the GRADE Study
    American Diabetes Association ; 2022
    In:  Diabetes Vol. 71, No. 6 ( 2022-06-01), p. 1261-1271
    Details
    In: Diabetes, American Diabetes Association, Vol. 71, No. 6 ( 2022-06-01), p. 1261-1271
    Abstract: Islet autoimmunity may contribute to β-cell dysfunction in type 2 diabetes (T2D). Its prevalence and clinical significance have not been rigorously determined. In this ancillary study to the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study (GRADE), we investigated the prevalence of cellular and humoral islet autoimmunity in patients with T2D duration of 4.0 ± 3.0 years (HbA1c 7.5 ± 0.5% on metformin alone). We measured T-cell autoreactivity against islet proteins, islet autoantibodies against 65-kDa GAD antigen, IA-2, and zinc transporter-8, and β-cell function. Cellular islet autoimmunity was present in 41.3%, humoral islet autoimmunity in 13.5%, and both in 5.3%. β-Cell function calculated as incremental area under the curve of glucose from 0–120 min (iAUC-CG) and ΔC-peptide(0–30)/Δglucose(0–30) from an oral glucose tolerance test was lower among T-cell–positive (T+) than T-cell–negative (T−) individuals using two different adjustments for insulin sensitivity (iAUC-CG: 13.2% [95% CI 0.3, 24.4] or 11.4% [95% CI 0.4, 21.2] lower; ΔC-peptide[0–30]/Δglucose[0–30] : 19% [95% CI 3.1, 32.3] or 17.7% [95% CI 2.6, 30.5%] lower). T+ patients had 17% higher HbA1c (95% CI 0.07, 0.28) and 7.7 mg/dL higher fasting plasma glucose levels (95% CI 0.2, 15.3) than T− patients. We conclude that islet autoimmunity is much more prevalent in patients with T2D than previously reported. T-cell–mediated autoimmunity is associated with diminished β-cell function and worse glycemic control.
    Type of Medium: Online Resource
    ISSN: 0012-1797
    URL: Article
    DOI: 10.2337/db21-0590
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2022
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  • 9
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    1794-P: Successful Standardization of a Hyperglycemic Clamp Method across Multiple Clinical Centers in the Restoring Insulin Secretion (RISE) Study
    American Diabetes Association ; 2020
    In:  Diabetes Vol. 69, No. Supplement_1 ( 2020-06-01)
    Details
    In: Diabetes, American Diabetes Association, Vol. 69, No. Supplement_1 ( 2020-06-01)
    Abstract: In RISE, repeated measurements of β-cell function and insulin sensitivity were performed using a standardized hyperglycemic glucose clamp method. After in person training, clamps were performed at seven centers, in youth (Y) and adults (A) with impaired glucose tolerance (IGT) or early type 2 diabetes (T2D). The goal was to achieve and maintain a plasma glucose concentration of 200 mg/dL over 120 minutes using a priming bolus followed by a continuous infusion of 20% dextrose adjusted based on plasma glucose measured every 5 minutes. Guidance for achieving target glycemia was formalized using spreadsheet-based calculations for glucose boluses and infusion rate changes, using participant weight and the delta of glucose from 200 mg/dL. We evaluated the achieved bedside glucose relative to target as well as differences between the guidance and selected infusion rates. We also compared relevant subgroups. Data from 923 clamps performed on 379 participants (up to three clamps each) were examined. Overall mean ± SD plasma glucose 10 minutes after the glucose bolus was 189 ± 18 mg/dL. This was higher in Y vs. A (194 ± 20 vs. 188 ± 18, p & lt;0.01) and higher in T2D vs. IGT (192 ± 18 vs. 188 ± 18, p & lt;0.01). At steady state (100-120 minutes) the achieved glucose was 199 ± 8 mg/dL slightly but significantly higher in T2D vs. IGT (200 ± 7 vs. 198 ± 8, p=0.006) and in Y vs. A (200 ± 8 vs. 198 ± 8, p & lt;0.05). The glucose infusion rate guidance was followed overall, but deviations occurred during the first 10 minutes (rate 11 ± 21 mL/hr higher than guidance). This deviation differed by clinic (p & lt;0.01) and by diabetes status (p & lt;0.01), but not in Y vs. A (p=0.26). Deviations from guidance were otherwise minor (2-4 mL/hr) and equal by subgroups except at T=90 min (A & gt; Y p=0.05, IGT & gt; T2D p & lt;0.01). The RISE hyperglycemic clamp procedure used formalized calculations and guidance to standardize the clamp approach. This approach achieved uniformity in performance of glucose clamps in a multicenter study in both Y and A. Disclosure K.J. Mather: Research Support; Self; Abbott, Merck & Co., Inc., Novo Nordisk Inc., Sanofi. A.H. Tjaden: None. S.A. Arslanian: Research Support; Self; National Institutes of Health. Other Relationship; Self; AstraZeneca, Eli Lilly and Company, Novo Nordisk Inc. K. Utzschneider: Other Relationship; Self; Medtronic. S. Caprio: None. K. Utzschneider: Other Relationship; Self; Medtronic. K.M. Atkinson: None. M. Cree-Green: Advisory Panel; Self; Novo Nordisk Inc. K.J. Nadeau: None. T.A. Buchanan: None. S.E. Kahn: Advisory Panel; Self; Boehringer Ingelheim International GmbH, Eli Lilly and Company, Intarcia Therapeutics, Janssen Scientific Affairs, LLC., Merck & Co., Inc., Novo Nordisk A/S, Pfizer Inc. T. Consortium: None. Funding American Diabetes Association (1-14-RISE-01 to S.E.K.); National Institute of Diabetes and Digestive and Kidney Diseases
    Type of Medium: Online Resource
    ISSN: 0012-1797 , 1939-327X
    URL: Article
    DOI: 10.2337/db20-1794-P
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2020
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  • 10
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    Association of Habitual Daily Physical Activity With Glucose Tolerance and β-Cell Function in Adults With Impaired Glucose Tolerance or Recently Diagnosed Type 2 Diabetes From the Restoring Insulin Secretion (RISE) Study
    American Diabetes Association ; 2019
    In:  Diabetes Care Vol. 42, No. 8 ( 2019-08-01), p. 1521-1529
    Details
    In: Diabetes Care, American Diabetes Association, Vol. 42, No. 8 ( 2019-08-01), p. 1521-1529
    Abstract: We examined the relationship between habitual daily physical activity and measures of glucose tolerance, insulin sensitivity, and β-cell responses in adults with impaired glucose tolerance (IGT) or drug-naive, recently diagnosed type 2 diabetes. RESEARCH DESIGN AND METHODS Participants included 230 adults (mean ± SD age 54.5 ± 8.5 years, BMI 35 ± 5.5 kg/m2; 42.6% women) who underwent a 3-h oral glucose tolerance test (OGTT) and hyperglycemic clamp. Wrist accelerometers worn for 7 consecutive days measured total physical activity counts (TAC) (daily mean 233,460 [∼50th percentile for age]). We evaluated whether TAC was associated with fasting plasma glucose, OGTT 2-h plasma glucose or glucose incremental area under the curve (G-iAUC), hyperglycemic clamp measures of insulin sensitivity (steady-state glucose infusion rate/insulin [M/I] ) and β-cell responses (acute C-peptide response to glucose, steady-state C-peptide, and maximal β-cell response), and OGTT C-peptide index (ΔC-peptide0–30/Δglucose0–30). RESULTS After adjustments for confounders, there was no association of TAC with fasting plasma glucose, 2-h glucose, or G-iAUC. Higher TAC was associated with higher insulin sensitivity (M/I). After adjusting for M/I, higher TAC was not associated with measures of β-cell response. CONCLUSIONS In adults with IGT or drug-naive, recently diagnosed type 2 diabetes, higher levels of habitual physical activity are associated with higher insulin sensitivity. Further studies are needed to understand why higher levels of physical activity are not associated with better β-cell response.
    Type of Medium: Online Resource
    ISSN: 0149-5992 , 1935-5548
    URL: Article
    DOI: 10.2337/dc19-0538
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2019
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