Final answer:
Elizabeth's daily protein needs are around 43.6 grams, adjusting to 54.5 grams to account for her jogging activity. Requirements may vary with factors such as pregnancy and caloric needs, which are 1500 to 2000 calories per day for average activities.
Step-by-step explanation:
Elizabeth's daily protein needs depend on several factors including her weight, activity level, and whether she has any special conditions such as pregnancy. Assuming Elizabeth is not pregnant and follows the average activity level, the Reference Daily Intake (RDI) suggests that the average woman needs around 0.8 grams of protein per kilogram of body weight per day. Since Elizabeth weighs 54.5 kilograms, her daily protein needs would be approximately 43.6 grams per day (0.8 grams x 54.5 kg). However, given that Elizabeth engages in moderate physical activity like jogging on the treadmill twice a week, her protein needs may be slightly higher to support muscle repair and recovery. A safe estimate might be 1.0 gram of protein per kilogram of body weight, increasing her need to about 54.5 grams of protein per day.
It's important to mention that during special life stages such as pregnancy, protein requirements may increase significantly. Furthermore, caloric needs also play a role in overall nutrition; an average person needs 1500 to 2000 calories per day, and an excess can lead to weight gain. Additionally, exercise can impact caloric requirements and should be taken into account when determining nutritional needs.