Here is the design of a clinical trial:

Official Title: Physical Training During Hospital Admission With Community-Acquired Pneumonia

Included conditions:
- Community-acquired Pneumonia

Study Armgroups:
- {'label': 'No intervention: Control', 'type': 'NO_INTERVENTION', 'description': 'Control group'}
- {'label': 'In-bed cycling', 'type': 'EXPERIMENTAL', 'description': 'Supervised in-bed cycling', 'interventionNames': ['Behavioral: In-bed cycling']}
- {'label': 'Exercise booklet', 'type': 'EXPERIMENTAL', 'description': 'Supervised physical training with exercises from exercise booklet', 'interventionNames': ['Behavioral: Exercise booklet']}

Interventions:
- {'type': 'BEHAVIORAL', 'name': 'In-bed cycling', 'description': 'Patients will daily perform 30 min of supervised in-bed cycling', 'armGroupLabels': ['In-bed cycling']}
- {'type': 'BEHAVIORAL', 'name': 'Exercise booklet', 'description': 'Patients will daily perform 30 min of supervised physical training with exercises from the exercise booklet', 'armGroupLabels': ['Exercise booklet']}

Primary Outcomes:
- {'measure': 'Length of hospital stay', 'description': 'Number of stays in hospital', 'timeFrame': 'From admission until discharge (an average of 5 days)'}

Please estimate the sample size based on the assumption: 
Assuming an estimated drop-out rate of 15%, the study aims for a power of > 0.8 at a two-sided significance level of 0.025, adjusted for multiple comparisons.
Statistical power and sample size calculations
      The sample size calculation is performed using www.powerandsamplesize.com and is based on the primary outcome, length of hospital stay. The expected reduction in length of hospital stay is based on data from a previous study showing a reduction (3.9âdays vs. 6.0âdays) for patients hospitalized with CAP randomized to either early mobilization or standard usual care [18]. The number of patients with CAP is based on a 2-day difference in length of hospital stay between CAP patients receiving standard usual care compared to standard usual care combined with daily physical training. The standard deviation for this calculation is 3.5âdays, as previous observed [18]. Assuming an estimated drop-out rate of 15%, inclusion of 210 patients (70 patients in each group) will provide a power of >â0.8 at a two-sided significance level of 0.025, adjusted for multiple comparisons (0.05/2).