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Objectives: Suboptimal health status (SHS) is considered to be an intermediate status between disease and health, and is characterised by a decline in vitality, in physiological function and in the capacity for adaptation. Although the incidence of SHS is high, the underlying causes remain unclear. Lifestyle is one of the most important factors affecting health status; however, the relationship between SHS and lifestyle has not been elucidated., Design: Cross-sectional survey., Setting: A questionnaire, based on 'Health Promoting Lifestyle Profile-II (HPLP-II)' and 'Sub-Health Measurement Scale V1.0 (SHMS V1.0)', was sent to four colleges in four districts (Guangzhou, Foshan, Zhanjiang and Shaoguan) of China between May and July 2013., Participants: A total of 12 429 questionnaires were distributed during the study period, and 11 144 completed responses were received., Results: The prevalence rates for the 'healthy', 'SHS' and 'disease' groups of respondents (students) were 22.81% (2542), 55.9% (6234) and 21.25% (2368), respectively. Most of the students reported a 'moderate' or 'good' lifestyle. There were significant differences in lifestyle and health status between the two genders. It was notable that health status was significantly positively correlated with lifestyle (r=0.563). For every dimension of the HPLP-II model, the mean values were lower for those participants who reported as 'SHS' or 'disease' than for those who reported that they were 'healthy'. The individual dimensions of the HPLP-II model, including 'spiritual growth', 'health responsibility', 'physical activity', 'interpersonal relations' and 'stress management' were all related to SHS., Conclusions: Health status is significantly positively correlated with lifestyle. Poor lifestyle is a risk factor for SHS. Conversely, adopting a healthier lifestyle can improve SHS., Trial Registration Number: ChiCTR-OCH-12002317., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.)

Objective: To study the relationship between sub-health status and the health-promoting lifestyle of employees., Methods: A total of 5316 employees in a company in Guangdong were surveyed using sub-health measurement scale version 1.0 (SHMS V1.0) and the health-promoting lifestyle profile (HPLP-II). The former scale included 3 subscales of somatic sub-health, psychological sub-health and social sub-health, and the latter included 6 subscales of self-actualization, healthy responsibility, physical exercise, nutrition, interpersonal sensitivity and stress treatment., Results: The total healthy rate was 12.86% among the employees, with 76.76% and 10.5% in sub-health and disease states. The mean scores of HPLP-II was 115.95∓21.468 in the total population surveyed, 134.23∓24.72 in healthy employees and 114.69∓19.25 in the patients. There was a significant difference in the grades of health-promoting lifestyle between sub-healthy and healthy employees (P<0.05) as well as in the scores of HPLP-II and the scores of the 6 subscales (P<0.05). An appreciable correlation was found between sub-health status and the 6 subscales, and self-realization, physical exercise and stress management showed significant inverse correlation with sub-health status., Conclusion: Sub-health status is related to health-promoting lifestyle, and self-realization, physical exercise and management are the protective factors that influence sub-health status.