"voluntarily recruited" is a correct and usable phrase in written English.
It is used to indicate when someone has chosen to join or participate in something without being asked or compelled to do so. For example, "He was one of the few people who had voluntarily recruited to work in the jungle."
T2D individuals were voluntarily recruited by their medical practitioner, from a Diabetic Clinic at the Steve Biko academic hospital, Pretoria, South Africa.
Subjects were voluntarily recruited from delegates visiting the 'ESGE Simulation Island' during the 23rd European Congress of Obstetrics and Gynaecology (2014) in Glasgow, Scotland, UK.
A previous study on a similar topic, carried out as a self-reported questionnaire, was administered to 308 respondents voluntarily recruited from throughout Sapporo from September to December 2013.
All the subjects were above 18 years old and were voluntarily recruited.
The VHVs are villagers voluntarily recruited from their own villages.
They were also voluntarily recruited after informed consent.
28 In the current study, the greater deficit in KE VA noted in the hot condition may have originated from a similar lack of motivation, decreasing the ability to voluntarily recruit (ie, brief MVC) and maintain (ie, sustained MVC) all available motor neurons, despite the feedback provided and the participants being constantly reminded to produce/sustain maximal torque.
This was done to investigate whether potential differences between legs would be due to properties of the muscle tendon complex (assessed with maximal electrical stimulation of the femoral nerve) or would be caused by side specific differences in the ability of subjects to voluntarily recruit their muscle fibers.
Perhaps because statistics on how employers get involved with apprenticeships have never been kept, the government has assumed employers have come forward voluntarily or were recruited by the National Apprenticeship Service.
Healthy controls matched by body mass index (BMI) and age were recruited voluntarily.
Participants were recruited voluntarily among those aged 30 or more living in Seoul.
