The effects of progressive resistance training combined with a whey-protein drink and vitamin D supplementation on glycaemic control, body composition and cardiometabolic risk factors in older adults with type 2 diabetes: study protocol for a randomized controlled trial

Daly, Robin M; Miller, Eliza G; Dunstan, David W; Kerr, Deborah A; Solah, Vicky; Menzies, David; Nowson, Caryl A

doi:10.1186/1745-6215-15-431

Trials

Table 1 Summary of the outcome measures

From: The effects of progressive resistance training combined with a whey-protein drink and vitamin D supplementation on glycaemic control, body composition and cardiometabolic risk factors in older adults with type 2 diabetes: study protocol for a randomized controlled trial

Variables	Data collection method	Data collection points
		Baseline	3 months	6 months
Primary outcome measures
Glycated haemoglobin (HbA_1c)	Overnight, fasted serum sample	×	×	×
HOMA-2 insulin resistance	Overnight, fasted serum sample, HOMA-2 calculator	×	×	×
HOMA-2 β-cell function	Overnight, fasted serum sample, HOMA-2 calculator	×	×	×
Secondary outcome measures
Body composition	Dual energy X-ray absorptiometry total body and regional lean mass and fat mass, and bone density	×		×
Body composition	Peripheral quantitative computed tomography scan at 25% femur site	×		×
Biochemistry and hormonal measures	Routine biochemistry	×	×	×
Biochemistry and hormonal measures	Serum 25-hydroxyvitamin D	×	×	×
Adipokines and inflammatory markers	Overnight fasted plasma collection	×	×	×
Blood lipids	Overnight fasted plasma collection	×	×	×
Blood pressure	Automated measurement	×	×	×
Muscle strength	Leg press and seated row	×		×
Muscle strength	Isometric knee extensor strength	×	×	×
Muscle function and balance	Timed up-and-go test	×	×	×
	Four-square step test	×	×	×
	30-second sit-to-stand test	×	×	×
Diabetes and other medication	Monthly reports	×	×	×
Health-related quality of life	Short Form (36) version 2 questionnaire	×	×	×
Cognitive function	CogState Brief Battery computerized tests	×	×	×
Additional measures
Anthropometry	Height, weight, body mass index and waist circumference	×	×	×
Physical activity	Community Healthy Activities Model Program for Seniors questionnaire	×	×	×
Diet	Anti-Cancer Council Food Frequency questionnaire	×		×
	24-hour food recollection	×	×	×
Adverse events	Monthly phone calls	Collected from monthly calls
Programme adherence	Calculated from monthly calendars collected every 8 weeks	Collected every 8 weeks
Supplement compliance	Calculated from supplement and sachets returned at 3 and 6 months		×	×

HOMA, homeostasis model assessment.

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ISSN: 1745-6215

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