Seniors should make judicious choices about how much time they donate to organizations. Discussions can also be places to confront alternative interpretations of your results by bringing in an additional analyses you did to test whether that interpretations holds up. In fact, activity level explains only seven percent of the impact of volunteering on satisfaction and thirteen percent of its impact on health. Volunteering has benefits beyond simple physical exertion. This is also the place to bring up any weaknesses of your research, and argue why your research and your interpretations are still valid or useful.
Weaknesses can also be an opening to suggesting issues for further research.
It is unclear why volunteering begins to have negative effects on physical well-being at higher levels of commitment. As these analyses controlled for years of age, it is not the case that the curvilinear relationship is a function of different effects among the older elderly than the younger elderly. It may be that with high levels of commitment come higher levels of responsibility and, therefore, stress. Perhaps at high levels of commitment, volunteers have to exert themselves more physically, which may be a strain to senior volunteers. Current data sources simply do not allow for these analyses to be conducted.