Carrying Heavy Shopping Bags and Muscle Function

What Is This Study About? To find out whether carrying heavy shopping bags twice a week can help adults not currently meeting physical activity strength guidelines improve muscle mass, strength, power, and endurance. What Can Be learnt? * Can carrying shopping bags help improve muscle mass, strength, power, and endurance? * Should carrying shopping bags be included within physical activity recommendations? Two groups will be compared: * One group will carry shopping bags twice a week within a controlled lab environment * The other group won't change anything in their routine. What Will Participants Do? * Self-select a weight for shopping bags that is heavy but can be carried for 15 minutes to use for all sessions * Walk with shopping bags for 15 minutes at a normal walking speed for carrying shopping home from the supermarket. * After each minute, the time stops and participants place bags on the floor. The time restarts for the next minute when the participant chooses to pick up the bags again.