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. 2019 Jan 25;14(1):e0211197. doi: 10.1371/journal.pone.0211197

Table 1. Information requested on the questionnaire.

Group of items Name variable Description item Response options Recoding of data by authors
Demographics Gender Gender of the participant. Male; Female -
Age Age in years. Open field -
Height Height of the participant. Open field Height and body mass reported in feet/inches and pounds were converted to cm and kg, respectively.
Body Mass Body mass of the participant. Open field
BMI Body Mass Index. - BMI was determined using the self-reported height and body mass.
Country Current country of residence of the participant. Open field Country was recoded as Spain, France, Brazil, and others.
Continent Current continent of residence of the participant. Africa; Asia; Europe: North America; South America; Antarctica; Australia Continent was recoded as Europe, South America, and others.
Race/ethnicity Race/ethnicity of the participant. White/Caucasian; Middle Eastern; Black/African; American Indian/Alaska Native; Asian/Indian; Latino/Hispanic; South American; Other -
Characteristics of cycling profile within the last 12 months Bike to work If they use a bicycle to commute to work. Yes; No -
Cycling frequency Frequency of cycling in rides per week. Open field -
Volume hours Weekly volume of cycling in hours. Open field -
Volume km Mileage of cycling per week. Open field -
Total volume km Total weekly volume of cycling using also the km to commute to work. Open field -
Experience Cycling experience in years of training. Open field -
Speed Average cycling speed during training sessions in km/h. Open field -
Modality Type of cycling modality. Road; Mountain bike; Triathlon; BMX; Open field -
Purpose Cycling purpose. Professional competition; Recreational competition; Recreational without competition -
Terrain Terrain more often faced during cycling. Road; Trail; Open field -
Coach If they have professional support (e.g. coach) for their cycling training. Yes; No -
Smartphone If they use a smartphone application to assist cycling training regime/schedule. Yes; No -
Characteristics of fitness training within the last 12 months Core training If they complement cycling with core training. Yes; No -
Flexibility training If they complement cycling with flexibility training. Yes; No -
Strength training If they complement cycling with strength training/weight lifting. Yes; No -
Sport If they complement cycling with other sport or training. Yes and which (open field); No Sports listed were running, swimming, team sport, racquet sport, gym sport, and walking sport (for each variable the answers were yes or no).
Bike characteristics and cycling posture about the most used bike Bikes owned Number of bicycles owned. Open field Bikes was recoded as 1 and >1.
Size If when they bought their bicycle receive instructions regarding selecting the correct size. Yes; No -
Maintenance If when they bought their bicycle receive instructions regarding maintenance. Yes; No -
Quality Which is the quality that they consider that have their bike. Low-end; Mid-range; High-end -
Suspension If the bike has a suspension system. Front suspension; Rear suspension; Full suspension; No -
Chain-ring Kind of chain-ring. This item was supported with an image. Circular; Non-circular; IDK -
Objective posture Most important aspect for them regarding their cycling position. Maximum performance; Maximum comfort; Balance between both -
Crank arm Size of crank arm. 170; 172.5; 175; Open field; IDK Crank arm was recoded as correct, not correct and IDK. For this recodification, because the inseam length is very correlated with the height and it is considered the 45% of the height [2123], inseam length was calculated and compared with the suggested proposal of crank assignation of Geoff Drake [24], where 165 is appropriate for inseams length <73.5 cm, 170 for inseams lengths between 73.5–81.5 cm, 172.5 for inseam lengths between 81.5 and 86.5 cm, and 175 for inseams lengths >86.5 cm.
Cycling shoes If they wear cycling shoes. Yes; No -
Cleats How they adjust their cleats. Adjusted by respondent; Adjusted by professional; Not adjusted; Not use cleats -
Aerobars If they use aerobars. This item was supported with an image. Yes; No -
Body comfort Classification of their body comfort during cycling. Very comfortable; Comfortable; Uncomfortable; Very uncomfortable Body comfort and Saddle comfort were recoded as discomfort reported (yes/no) for statistical models
Saddle comfort Classification of their saddle comfort during cycling. Very comfortable; Comfortable; Uncomfortable; Very uncomfortable
Pain Pain during cycling If they experience pain during cycling practice and in which body areas. No; Neck; Shoulder; Upper back; Arm; Hand; Lower back; Hip; Genital area; Anterior thigh; Posterior thigh; Knee; Leg; Ankle; Foot Pain during cycling and pain while not cycling were recoded as reported pain (yes/no) for the statistical models. The pain areas were analyzed separately.
Pain while not cycling If they experience pain while not cycling and in which body areas. Same responses as Pain during practice
Injuries in the last 12 months.
If the participant had more than 4 injuries in the last 12 months, they were instructed to provide information about the most recent 4.
Injuries Number of injuries. 0; 1; 2; 3; 4 and more Number of injuries was recoded for statistical models as injured/not injured
Region injury Body region of each injury. Same regions as Pain practice -
Diagnosis injury Diagnosis of each injury. Sprain/strain; Contusion/abrasion; Concussion; Fracture/stress fracture; Inflammatory conditions; Muscle ruptures and micro-ruptures; Laceration; Other (open field) The category of “degenerative injuries” was included in diagnosis after review the responses of participants.
Cause injury Perception of the cause of each injury. Fall; Contact with vehicle; Contact with other bicyclist; Contact with pedestrian; Contact with stand-still Structure; Incorrect posture; Incorrect pedaling technique; Overuse/fatigue; Playing another sport; Unknown; Other (open field) -
Medical leave If the injury produced a medical leave. Yes; No -
Surgery If the injury required a surgical intervention. Yes; No -
Recovery The duration of recovery time for each injury. <1 day; 1 day to <1 week; 1 week to <2 weeks; 2 weeks to <1 month; 1 month to <3 months; ≥3 months -

IDK: I don´t know.