The application of peer mentoring to improve fitness in older adults.

PURPOSE: To investigate the effectiveness of a peer-mentored exercise program, this study compared the program perception, retention and participation rates, and physical improvements of older adults trained by peer mentors (PMs) with those of a group trained by student mentors (SMs). METHODS: After a 30-week peer-mentor preparation, 60 older adults (M +/- SD age: 68.7 +/- 6.1 yr) were recruited and randomly assigned to either the PM or the SM group. Both groups completed an identical 14-week fitness program. Pre- and posttraining assessments of fitness were completed, and the efficacy of the PMs and SMs was surveyed. RESULTS: High retention was observed in both groups, but the SM group had higher participation. Both groups improved their fitness significantly, with no significant posttest differences between the groups in most fitness measures or in program perception rates. DISCUSSION: Findings suggest effectiveness of the peer-mentor model in an older adult exercise program.

Effects of manual resistance training on fitness in adolescents.

Manual resistance training (MRT), an alternative to traditional resistance training, requires minimal equipment and may be effective when applied in school-based physical education (PE) classes. The purpose of this study was to document the physical changes in adolescents (n = 222) using MRT in school-based PE settings. Six fitness tests from the Fitnessgram assessment tool were selected to assess students' cardiovascular and muscular fitness, and skinfold tests were used to assess body composition. One control and 2 experimental groups were defined. The control group of students (n = 129) attended regular PE classes. One experimental group (n = 63) attended PE that was complemented by the MRT system. A second experimental group (n = 30) attended PE complemented by MRT and cardiovascular endurance training. With use of the selected Fitnessgram tests, post-test measurements were performed after 9 and 18 weeks of PE. At baseline, there were no significant differences among the 3 groups for most measures. Compared with baseline, the experimental groups improved significantly in all 6 fitness measures and showed more improvements than the control group in most fitness measures both at 9 and 18 weeks. None of the groups showed significant improvement in body composition. The results documented that an MRT-complemented PE program was effective in improving adolescents' muscular fitness. An 18-week combined MRT and cardiovascular endurance training program effectively improved cardiovascular and muscular fitness but was ineffective in improving adolescent body composition. An MRT-based exercise session requires minimal equipment and set-up and can be performed in a short period of time, and therefore it is suitable for application in regular PE settings.