Arrogi Anass, Schotte Astrid, Bogaerts An, Boen Filip, Seghers Jan
Department of Kinesiology, KU Leuven, Tervuursevest 101, 3001, Leuven, Belgium.
Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Tervuursevest 101, 3001, Leuven, Belgium.
BMC Public Health. 2017 Jan 9;17(1):52. doi: 10.1186/s12889-016-3965-1.
The objective of the present study was to evaluate the short- and long-term intervention and mediation effects of a 3-month individualized need-supportive physical activity (PA) counseling intervention on employees' PA and sedentary behavior.
Insufficiently active employees (n = 300; mean age 42 ± 9 years; 78% female) were recruited from a large pharmaceutical company in Flanders, Belgium. A quasi-experimental design was used in which the intervention group (N = 246) was recruited separately from the reference group (N = 54). Intervention group participants received a 3-month behavioral support intervention, which consisted of two one-hour face-to-face counseling sessions and three follow-up counseling contacts by e-mail or telephone at weeks three, six and nine. PA counseling, delivered by qualified PA counselors, aimed to satisfy participants' basic psychological needs for autonomy, competence, and relatedness. Reference group participants did not receive individualized PA counseling. Outcome measures included objectively assessed and self-reported PA and sedentary time and psychological need satisfaction. Assessments were held at baseline, immediately after the intervention (short-term) and 6 months post-intervention (long-term). Mixed model analyses and bootstrapping analyses were used to determine intervention and mediation effects, respectively.
The intervention group increased weekday daily steps both in the short- and long-term, while the reference group showed reductions in daily step count (ES = .65 and ES = .48 in the short- and long-term, respectively). In the short-term, weekday moderate-to-vigorous PA increased more pronouncedly in the intervention group compared to the reference group (ES = .34). Moreover, the intervention group demonstrated reductions in self-reported sitting time during weekends both in the short- and long-term, whereas the reference group reported increased sitting time (ES = .44 and ES = .32 in the short- and long-term, respectively). Changes in perceived autonomy and competence need satisfaction mediated the long-term intervention effects on daily step count.
A 3-month individualized need-supportive PA counseling intervention among employees resulted in significant and sustained improvements in weekday daily step count and in decreased self-reported sitting during weekends. Our findings contribute to the growing evidence of the long-term effectiveness of need-supportive PA counseling.
ClinicalTrials.gov NCT01759927 . Registered December 30, 2012.
本研究的目的是评估为期3个月的个性化需求支持性体育活动（PA）咨询干预对员工PA和久坐行为的短期和长期干预及中介作用。
从不活跃的员工中招募（n = 300；平均年龄42±9岁；78%为女性），这些员工来自比利时弗拉芒地区的一家大型制药公司。采用准实验设计，干预组（N = 246）与参照组（N = 54）分开招募。干预组参与者接受为期3个月的行为支持干预，包括两次一小时的面对面咨询会议，以及在第3、6和9周通过电子邮件或电话进行的三次后续咨询联系。由合格的PA顾问提供PA咨询，旨在满足参与者对自主性、能力和关联性的基本心理需求。参照组参与者未接受个性化PA咨询。结果测量包括客观评估和自我报告的PA及久坐时间，以及心理需求满意度。在基线、干预后立即（短期）和干预后6个月（长期）进行评估。分别使用混合模型分析和自抽样分析来确定干预和中介作用。
干预组在短期和长期内工作日的每日步数均增加，而参照组的每日步数减少（短期和长期的效应量分别为0.65和0.48）。在短期内，干预组工作日的中度至剧烈PA相比参照组增加更为明显（效应量 = 0.34）。此外，干预组在短期和长期内周末自我报告的久坐时间均减少，而参照组报告久坐时间增加（短期和长期的效应量分别为0.44和0.32）。感知自主性和能力需求满意度方面的变化介导了对每日步数的长期干预作用。
对员工进行为期3个月的个性化需求支持性PA咨询干预，导致工作日每日步数显著且持续增加，以及自我报告的周末久坐时间减少。我们的研究结果为需求支持性PA咨询的长期有效性提供了越来越多的证据。
ClinicalTrials.gov NCT01759927。2012年12月30日注册。
